Home – Home – Jornals – Contemporary Problems of Ecology 2015 number 6

Interdecadal cyclicity of tree ring increment on the upper and lower limits of the forest in mountainous regions of Inner Asia was estimated. This data and records from Teeli meteorological station were used to reconstruct June and July temperatures since 1715 and May and June water discharge of the Buyant River (Mongolia) since 1474. Verification of the detected cycles using the instrumental hydrometeorological data allowed concluding that 21–45-year cycles of tree ring growth had been caused by climtic oscillations.

Quantitative dynamics, water surface area, and water level of lakes in the Trans-Baikal forest-steppe zone were studied by means of spectroradiometry (Landsat satellite), gravimetry (GRACE satellite) and altimetry (Envisat satellite). The number of lakes and their water surface area correlated with precipitation (r² = 0.84–0.85), summer and annual temperature (r²= −0.77…−0.9) and drought index (r² = 0.95…0.97). During extremely dry periods (2006–2010) the number of lakes decreased by four (compared to 1989) and their water surface area decreased by three (compared to 2000) were observed. The rate of change in the water level of the lakes (~29 years) was determined.

The succession of a rodent population was investigated in forest biocenoses of the Visim Nature Biosphere Reserve (Sverdlovsk region, Middle Ural) after a windfall and two fires. The differences in the total abundance of rodents and their ratio in the community before natural catastrophes and at different postcatastrophic regenerative succession stages were noted. Structural reorganizations in the rodent population were connected with different response of the species to the wind- and fire-induced transformation of their habitats. These reorganizations can be considered compensatory mechanisms which support the stability of small mammal communities during natural disasters.

The effect produced by copper ions on physiological and biochemical parameters of natural biofilms was studied. Biofilms are multispecific formations of phototrophic microorganisms with the dominance of the Phormidium cyanobacteria. It was established that the impact of Cu²⁺ ions (20 mg/dm³) after 1 hour caused a decrease of chlorophyll in the biofilms. It also resulted in the appearance of pheophytin in the cyanobacterial suspension, and an increase of lipid peroxidation. In 24 hours the microorganisms got adapted, which was testified by the increased catalase activity, reduced liрid peroxidation, and restoration of chlorophyll. During a 1-hour contact of homogenized biofilm with copper solution (the ratio of 0,031 g. per 100 cm³ of the solution), copper ion (II) concentration reduced to the level of MPC. The purification rate constituted 99 %. This feature of biofilms could be used for creating a biosorbent.

After a research on spring migration of Falconiformes in 2011 and 2013, a key importance of the South Baikal migratory corridor as a zone of bird concentration in spring was discovered additionally to its well-known autumn importance. Conclusions on numbers, species list, and features of migratory behavior were made. During long-time observation of Falconiformes, three patterns of their migratory movement through the southernmost part of Lake Baikal were determined. The patterns depended on cloud, wind, and ice situation. The relation between migratory activity and meteorological situation on the migratory route was found. Species-specific differences in the birds’ reaction on weather changes during spring migration were shown on the example of four common migrating raptor species.

The results of long-term monitoring (1974–2014) of a model population of Homogyne alpinа (L.) Cass. (Asteraceae) during demutational changes on Carpathian subalpine meadows were summarized. Patterns of structural transformations and self-regulation princiрles of this population were determined. A special role of micropopulations in the formation of plant generations and preservation of heterogeneity of population elements was noted.

The assessment of 16 cenopopulations of Hedysarum alpinum including individual and population level was conducted on the territory near Lake Baikal. Floodplain meadows proved to be the most favorable habitats for the studied species. Cenopopulations from the permafrost zone and cenopopulations under human impact were characterized by pessimal state with the lowest values of the species’ parameters. The ability of H. alpinum to grow in unfavorable conditions by means of decreasing individual parameters and population characteristics has the adaptive significance. This ability determines the main integral property of the species which is tolerance.

Nucleotid sequences of internal transcribed spacers (ITS1 and ITS2) of rDNA were obtained and analyzed in populations of Planorbarius corneus snails from Leningradskaya Oblast and Kaliningradskaya Oblast. Close similarity between ITS1 and ITS2 of the snails from different areas proved the fact that Planorbarius corneus was a polymorphic but a uniform species.

The composition and content of phenolic compounds in aqueous-alcoholic extracts from the leaves of Nitraria sibirica Pall. and N. schoberi L. (Nitrariaceae) were studied using the high-performance liquid chromatography method. Nineteen components were detected, of which four components were identified: quercetin-3-galactoside (a hyperoside), isoramnetin-3-rutinoside (a narcissine), quercetin (a flavonol) and luteoline (a flavone). It was determined that the species had different phenolic compounds complexes. The differences were most pronounced during the flowering period of the plants. The correlation between the content of phenolic compounds in the leaves of Nitraria sibirica Pall. with the species’ habitat conditions was found out.

The results of the study of above- and under-ground organs of Ferula foetida (Bunge) Regel growing in Tuyesu sands in the south of Mangyshlak peninsula were presented. It was found that the diagnostic characteristics of Ferula foetida raw material were: the form and structure of epidermis cells, presence of simple mono- and multicellular trichomes, location of conductive bundles and structure of schizogenous and schizo-lysigenous conceptacles in the bark parenchyma of roots, in leaves, leafstalk and above the stem’s conductive bundles. Resin and gum accumulation of Ferula foetida was associated with schizogenous and schizo-lysigenous conceptacles. Stem and leaves of many-aged plants had similar anatomical structure in which all types of tissues were well expressed. Roots of many-aged individuals of Ferula foetida differed by the number of elements in the conductive zone and the thickness of basic elements (bark parenchyma, diameter of xylary vessels and holes of conceptacles).

The peculiarities of in vitro regeneration of the rare species Fritillaria meleagris L. from floral explants was studied for the first time. At the establishment of in vitro culture and during the multiplication stage the most effective was the use of the В₅ nutrient medium supplemented with 0.44 mМ BA, 3.22 mМ NAA and 2.28 mМ IAA. During the multiplication stage the regeneration rate reached 80 % and the number of bulblets per explant was 3.9 ± 0.3. It was established that morphogenesis of the de novo formed structures depended on the mineral composition of the medium: the use of mineral-based B₅ led to adventitious shoot formation (gemmogenesis), while the use of BDS caused morphogenic callus formation and gemmorhizogenesis on its surface. The stimulating effect of low temperatures (+7 ^oС) on bulblets’ development and adaptation to ex vitro conditions was noted.

The comparative study of the concentrations of chemical elements (Cu, Zn, Fe, Mn, Ni, Co, Cr, Cd, Pb, Ca, Mg, K) in plants and soils of South Dagestan was conducted in two districts distinguished by different level of heavy metals in rock formations. It was established that plants and soils in the area of natural geochemical anomaly (southern schistic region of Inner Dagestan mountain province) were characterized by higher content of the most part of the studied elements, except Ca and Cr, as compared to those in the reference area (northern limestone region of Inner Dagestan mountain province). High content of Cu, Zn, Fe, Mn, Ni, Co in plants and soils - the most important components of any ecosystem - allowed us to consider the south schistic region of Dagestan as a biogeochemical province with high concentration of the above mentioned heavy metals.

The content of hydrocarbons, including polyaromatic hydrocarbons and polychlorinated biрhenyls in the bottom sediments of the Nakhodka Bay was studied. It was shown that the content of the pollutants was similar to that of low polluted areas of the World Ocean. PAH and PCB concentration in the Nakhodka Bay did not exceed the toxic thresholds and did not pose any threat to the existence of aquatic organisms.

Organic substances and metals have multidirectional effects on soil microorganisms. The response of a soil microbial community to simultaneous introduction of an organic substance and metals was assessed (the metals were a part of a sewage sludge compost). The increase of C_org to 2,1 ± 0,4 % and mobile Cd, Cr, Cu, Ni, Pb and Zn forms to 1,1 ± 0,03, 3,8 ± 0,8, 6,0 ± 1,2, 2,1 ± 0,5, 3,2 ± 0,7 and 12,3 ± 2,7 ppm^–1 correspondingly resulted in the growth of microbial biomass in comparison to the control soil, two seasons after soil treatment. Respiratory activity of the studied soils increased during the first season and decreased by the end of the second season to the level of control plots. The value of metabolic quotient did not exceed the control level. The principal components analysis of the obtained data revealed that the major factor defining variability of the microbial community was the content of organic substance in the soil.

Results of a theoretical study of the molecular structure of arglabin are pesented. Quantum chemical calculations of the geometry and physicochemical characteristics of arglabin are performed by the semi-empirical РМ6 method, the non-empirical Hartree-Fock method, and the hybrid B3LYP DFT method with 6-31G and 6-31G( d ) basis sets. By the B3LYP/6-31G( d ) method the vibrational frequencies and intensities of IR absorption bands of arglabin are also calculated and the detailed interpretation of the IR spectrum is given. The theoretical frequencies are well consistent with the experimental data.

The work presents Raman spectra of platelike crystals of the CuCrS ₂ compound, which were grown from polycrystalline CuCrS ₂ by the CVD method with an elementary iodine as a carrier. The spectra are measured in the temperature range of 5-300 K. Observed vibrational modes are assigned based on the temperature dependences of their frequencies. In the temperature range of magnetic ordering ( Т < 40 K) a weak increase is observed in the frequencies of totally symmetric vibrations, which is interpreted as a result of the phonon-magnon interaction.

Binuclear [Pt(bt)m-(N^S)] ₂ complexes (bt ^- is the deprotonated form of 2-phenylbenzothiazole, (N^S) ^- = 2-mercaptopyridineate, 2-mercaptopyrimidineate, 2-mercaptobenzothiazoleate, 2-mercaptobenzoxazoleate ions) are characterized by the following methods: X-ray crystallography, ¹Н and ¹⁹⁵Pt NMR spectroscopy, electronic absorption and emission spectroscopy, cyclic voltammetry. The occurrence of the Pt-Pt chemical bond and complexes in both crystalline state and solution in the form of cis -N _(bt),S-binding isomers with the asymmetrical arrangement of two cyclometalated and two bridging ligands is shown. Long-wavе absorption bands and luminescence of the complexes in the red spectral range are due to spin-allowed and spin-forbidden optical charge transfer transitions from the metal-metal bond to the metalated ligand. In cyclic voltammetry, two-electron redox waves of the complexes are attributed to metal- and ligand-centered processes involving s* HOMO and p*(bt) LUMO of the complexes.

Elemental analyses, single crystal X-ray diffraction method, and ¹H and ¹³C NMR spectral techniques are used to synthesize and characterize the crystal structure of 4-diethylamino-2-{[4-(3-methyl-3-phenyl-cyclobutyl)-thiazol-2-yl]-hydrazonomethyl}-phenol. In order to calculate the molecular geometry along with vibrational frequencies and the gauge including atomic orbital (GIAO) ¹H and ¹³C NMR chemical shift values of the title crystal structure in the ground state, the Hartree-Fock (HF) and density functional theory (DFT) methods with 6-311G( d,p ) basis sets are utilized. The assignments of the vibrational frequencies are calculated with the help of the potential energy distribution (PED) analysis using the VEDA 4 software. Experimental data are used for comparison. The molecule contains C-H⋯O intra-inter-molecular interactions.

The possibility of modifying carbon materials by RCVD and MOCVD of complex high-melting coatings consisting of the inner hafnium carbide layer and the outer iridium layer is studied. The morphological features, microstructure, and phase composition of the carbide and complex HfC-Ir coating on a carbon material are examined by scanning electron microscopy and powder X-ray diffraction analysis. The HfC coating is uniform, continuous, repeating the geometry of a carbon substrate. A scheme of chemical reactions describing the processes of hafnium transfer on carbon in the form of gaseous hafnium fluorides with a lower valence is proposed. The iridium coating consists of slightly elongated crystallites and has a good adhesion to the carbide layer.

The structure of two new ionic compounds of sparfloxacin (C ₁₉H ₂₂F ₂N ₄O ₃, SfH), SfH ₃[ZnCl ₄]×1.5H ₂O (I) and SfH ₃[CdBr ₄]×H ₂O (II), is determined. Crystallographic data are as follows: for I a = 14.505(3) Å, b = 12.615(3) Å, c = 29.118(7) Å, V = 5254(4)Å ³, space group Pbca , Z = 8; for II a = 13.2822(5) Å, b = 10.2564(4) Å, c = 21.3250(8) Å, b = 100.7248(4)°, V = 2854.3(3) Å ³, space group P 2 ₁/ n , Z = 4. The structures of the compounds are stabilized by intra- and intermolecular hydrogen bonds and the structure of I is additionally stabilized by the p-p interaction between the SfH ions.

Ammonium dicobalt(II)-octa-molybdenum with the composition (NH ₄) ₂[Co(H ₂O) ₄] ₂[Mo ₈O ₂₇]×6H ₂O (I) is synthesized and studied by X-ray diffraction, IR spectroscopy, and thermogravimetry. The compound crystallizes in a triclinic system with the following unit cell parameters: a = 8.62923(9) Å, b = 9.4795(10) Å, c = 12.2071(13) Å, a = 104.326(2)°, b = 109.910(2)°, g = 100.820(2)°, V = 868.18(16) Å ³, ρ _(calc.) = 3.071 g/cm ³, Z = 1. Space group is Р -1. IR spectroscopic and thermogravimetric analyses are performed.

The complex of the composition [Pd ₂(H ₂L ¹)Cl ₄] (I) (H ₂L ¹ is a chiral bis-α-sulfanyl oxime, a derivative of natural monoterpenoid (+)-3-carene) is synthesized. Single crystals of I and solvate [Pd ₂(H ₂L ¹)Cl ₄]×0.5CH ₂Cl ₂ (II) are grown. According to the X-ray crystallographic data, the crystal structure of I consists of acentric molecules of the binuclear [Pd ₂(H ₂L ¹)Cl ₄] complex. The structure of solvate II consists of the molecules of binuclear complex I and CH ₂Cl ₂ molecules. The PdCl ₂NS coordination sites are distorted squares (trapezia). In the structures of I and II, the PdCl ₂ fragments are in the transoid position. In I, the Cl ₂NS planes of the two coordination sites are nearly parallel (the angle between the planes is 7.7(1)°). The similar angle in solvate II is 22.0(1)°.

Conditions are determined for the formation of sodium heteropolyhexamolybdenumnickelate(II) Na ₄[Ni(OH) ₆Мо ₆O ₁₈]·16H ₂O (I) in a Ni(NO ₃) ₂-Na ₂МоO ₄-HNO ₃-H ₂O solution acidified to Z = ν(H ⁺)/ν(МоO ) = 1.00. Synthesized salt I is investigated by chemical analysis, single crystal XRD, powder XRD, thermal analysis, and IR spectroscopy. The heteropolyanion is shown to belong to the Anderson type. Compound I is analyzed by single crystal XRD ( M _r = 1404.61, triclinic, space group P , a = 8.0586(4) Å, b = 10.5445(6) Å, c = 12.1374(5) Å, α= 69.557(5)Å, β = 70.604(4)Å, γ = 84.123(4)Å, V = 911.45(8) Å ³) to find that it is isostructural to Na ₄[Ni(OH) ₆W ₆O ₁₈]·16H ₂O. All metal atoms in the structure of I are in an octahedral environment: the coordination sphere of the Ni heteroatom consists of OH groups; that of Mo consists of O atoms and OH groups; Na atoms are linked to the heteropolyanion via the terminal O atoms of the polyanion and surrounded by water molecules. In the crystal packing, the [Ni(OH) ₆Mo ₆O ₁₈] ^4- anions lie in planes parallel to (1 0) and the polyanion layers alternate with those formed by the paired octahedra [Na ₂(μ-H ₂O) ₂(H ₂O) ₆(O) ₂] in the direction of the y axis.

The synthesis, crystal structures, and characterization (IR, TGA/DSC) of [Nd(C ₅H ₆O ₄)·(H ₂O) ₄]·Cl (1) and Pr(C ₅H ₆O ₄)(C ₅H ₇O ₄)(H ₂O)]·H ₂O (2) are described. Compound 1 is a one-dimensional coordination polymer containing double chains incorporating pairs of edge-sharing NdO ₉ polyhedra linked by glutarate dianions. A network of O-H⋯O and O-H⋯Cl hydrogen bonds helps to consolidate the structure. Compound 2 is a three-dimensional coordination polymer incorporating chains of edge-sharing PrO ₁₀ polyhedra. Its glutarate ion adopts an extended conformation, whereas its hydrogen glutarate ion takes on a twisted conformation. O-H⋯O hydrogen bonds are seen in the crystal structure, which features small channels occupied by water molecules. Crystal data: 1, C ₅H ₁₄ClNdO ₈, M _r = 381.85, monoclinic, P 2 ₁/ c (No. 14), a = 8.9763(6) Å, b = 15.9277(11) Å, c = 8.8690(6) Å, β = 112.090(2)°, V = 1174.94(14) Å ³, Z = 4, R ( F ) = 0.016, wR ( F ²) = 0.037. 2, C ₁₀H ₁₇O ₁₀Pr, M _r = 438.15, orthorhombic, Pbca (No. 61), a = 16.3030(7) Å, b = 8.6714(4) Å, c = 19.3899(8) Å, V = 2741.1(2) Å ³, Z = 8, R ( F ) = 0.020, wR ( F ²) = 0.050.

Two new oxovanadium(V) complexes [VOL ¹(HQ)] (1) and [VOL ²(HQ)] (2) are prepared by the reaction of [VO(acac) ₂] (where acac = acetylacetonate), 8-hydroxyquinoline (HHQ) with 4-bromo- N'-(3-ethoxy-2-hydroxybenzylidene)benzohydrazide (H ₂L ¹) and 2-bromo- N'-(3-ethoxy-2-hydroxybenzylidene)benzohydrazide (H ₂L ²), respectively, in methanol. Crystal and molecular structures of the complexes are determined by elemental analysis, infrared spectroscopy, and single crystal X-ray diffraction. Complex 1 crystallizes in the monoclinic space group P 2 ₁/ c , with unit cell dimensions a = 12.5236(13) Å, b = 22.5260(15) Å, c = 16.7029(13) Å, b = 90.054(2)°, V = 4712.0(7) Å ³, Z = 8, GOOF = 1.024, R ₁ = 0.0586 and wR ₂ = 0.0835. Complex 2 crystallizes in the triclinic space group P -1, with unit cell dimensions a = 7.4344(12) Å, b = 10.8677(16) Å, c = 14.687(2) Å, α = 85.327(5)°, β = 77.357(5)°, γ = 84.896(5)°, V = 1150.9(3) Å ³, Z = 2, GOOF = 1.153, R ₁ = 0.0917 and wR ₂ = 0.3014. The V atoms are in the octahedral coordination. Thermal stability of the complexes is also studied.

Reaction of the morpholine amide derivative of 2-phenyl-4-quinolinecarboxylic acid with mercury(II) acetate and lithium chloride results in chloromercuration at the ortho position on the phenyl ring; the complex was characterised by ESI mass spectrometry and an X-ray structure determination.

The molecular structure of 3-oxo-urs-12-en-28-oic acid anhydride is determined. Crystals of C ₆₀H ₉₀O ₅ compound (III) are monoclinic, space group С2, at 100 K a = 15.1308(13) Å, b = 23.5150(19) Å, c = 15.1275(12) Å, β = 108.276(2)°. Molecules in the crystal are located in a special position on axis 2.

Branched star-like dextran-polyacrylamide copolymers in nonionic and ionic forms are used as matrices for the fabrication of silver nanoparticles. It is demonstrated that due to the features of their molecular structure providing a high local concentration of functional groups, branched polymers stabilize silver nanoparticles more efficiently as compared with their linear analogs. Stable silver colloids are obtained in a branched anionic matrix, meanwhile a linear matrix does not stabilize a nanosystem.

Structures of different classes of organic crystal hydrates are considered and their structural classification is presented based on the dimensionality and planarity of the included (Н ₂О) _n motif (water associate). The structural data are generalized with respect to the proton excess of the water associate.

Quantum chemistry methods are used to analyze in detail the structure of the van der Waals complex of ethylene with oxygen C ₂H ₄-O ₂, and binding energies for stable configurations of the complex are calculated. The calculations are carried out by the MP2 method using the 6-311++G(2 d ,2 p ) and aug-cc-pV n Z ( n = 2, 3, 4) basis sets. It is demonstrated that the most stable structure of the van der Waals complex of ethylene with oxygen is a structure with C _{2 v} symmetry, where the oxygen and ethylene molecules are located parallel and lie in the same plane. The calculation of the binding energy for this structure using the aug-cc-pV n Z ( n = 2, 3, 4) basis sets with the extrapolation of results to the infinite basis set limit ( n → ∞) gives a value of 206 cm ^-1.

A crystallographic analysis of the highly symmetrical cubic structure of Sc _0,8B _9,64C _0,53Si _0,057 is conducted of both centers of the [B ₁₂] and [B ₁₀] cluster groups with Sc and Si atoms and separately all individual atoms. In the first case, the analysis reveals an ordering with an I _cub sublattice ( а ≈ 5.1 Å) and a competing ordering with an F _cub sublattice ( а ≈ 6.8 Å). In the second case (for individual atoms), the analysis reveals orderings with analogous sublattices with twice as small parameters.

Methods of X-ray diffraction analysis and nuclear magnetic resonance are used to determine the molecular structure of macrobicyclic boron-capped tris -dioxymate iron(II) clathrochelate containing an annellated 5-membered heterocycle.

By alternating current electrochemical synthesis a new [Cu ₂( atfmphet ) ₂(CF ₃SO ₃) ₂] π complex is obtained from the alcohol solution of Cu(CF ₃SO ₃) ₂ and 5-(allylthio)-1-[2-(trifluoromethyl)phenyl]-1 H -tetrazole ( atfmphet ) and studied using single crystal X-ray diffraction.

The inclusion compound of the composition [Zn ₂(dmf)(bdc)(lac)]×C ₅H ₆O is obtained by keeping a porous homochiral metal-organic polymer of the composition [Zn ₂(dmf)(bdc)(lac)]·DMF (DMF = N,N-dimethylformamide, H ₂bdc = terephthalic acid, H ₂lac = S -lactic acid) in liquid 2-cyclopentene-1-one, and the crystal structure of the compound is determined.

In this paper, we report the preparation of a four-coordinated copper(I) thiosemicarbazone complex [CuI(PPh ₃)(catsc)] from the reaction of PPh ₃ and catsc (3-phenylpropenalthiosemicarbazone) with CuI. The synthesized complex is characterized by elemental analyses (CHNS) and FT-IR spectroscopy. The crystal structure of [CuI(PPh ₃)(catsc)] is investigated by single crystal X-ray diffraction. The catsc coordinates to the copper(I) ion as a bidentate ligand via the N and S atoms. The complex has a distorted tetrahedral coordination geometry.

A two-dimensional Ni(II) complex {[Ni(BTX)(SDBA)(H ₂O)]·0.29H ₂O} _n (1) (BTX = 1,4-bis(1,2,4-triazol-1-ylmethyl)-benzene, H ₂SDBA = 4,4'-sulfonyldibenzoic acid) is synthesized and characterized using single crystal X-ray diffraction, IR spectroscopy, and elemental analysis. The single crystal X-ray diffraction analysis reveals that complex 1 is a two-dimensional polymer containing 28-membered rings based on the rhomboid subunit [Ni ₂(C ₁₄H ₈O ₆S) ₂] with a Ni-Ni separation of 12.923 Å. The thermal stability and magnetic property of the title complex are briefly investigated.

A one-dimensional Zn(II) complex [Zn(Im) ₂(NO ₂-BDC)] _n (1) (Im = Imdazole, NO ₂-H ₂BDC = 5-nitro-1,3-benzenedicarboxylic acid) is synthesized and characterized using single crystal X-ray diffraction, IR spectroscopy and elemental analysis. Single crystal X-ray diffraction analysis reveals that complex 1 is a one-dimensional chain polymer with a Zn⋯Zn separation of 9.6190(2) Å arranged parallel to the (1 0 0) crystal direction. In addition, the luminescence measurements reveal that complex 1 exhibits strong fluorescent emissions in the solid state at room temperature.

The crystal structures of two N-heterocyclic carbene (NHC)-palladacycles are determined by single crystal X-ray diffraction. The intermolecular C-H⋯Cl hydrogen bonds and π⋯π interactions are found in the crystals.

A method for the synthesis of the Mo(acac) ₃ complex is proposed and its crystal structure is determined by single crystal X-ray diffraction. Space group P 2 ₁/ c , a = 19.7538(5) Å, b = 7.4821(2) Å, c = 34.6190(8) Å, b = 96.8055(12)°, V = 5080.6(2) Å ³, Z = 12. The compound is studied by the thermogravimetric analysis, and MoO ₃ is shown to be the result of its decomposition.

By single crystal X-ray diffraction, the structure of a new compound based on octahedral mixed-ligand anionic cluster complexes of rhenium and cadmium(II) cations is determined: K _0.4Cs _0.6{Cd(H ₂O) ₂Re ₆S ₈(CN) ₄(OH)(H ₂O)}·8H ₂O (1). The compound has a framework structure with a pts (platinum sulfide) topology. The cluster anions are additionally chained together by strong OH…H ₂O hydrogen bonds between the terminal ligands of neighboring clusters; the O…O distance is 2.464 Å.