| 1. |
- Ivanov, Alexander V., et al.
(author)
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Crystalline cadmium dialkyl phosphorodithioate complexes : synthesis and structural organization as probed by multinuclear C-13, P-31, and Cd-113 CP/MAS NMR and single-crystal X-ray diffraction
- 2007
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In: Russian Journal of Inorganic Chemistry. - 0036-0236 .- 1531-8613. ; 52:10, s. 1595-1602
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Journal article (peer-reviewed)abstract
- The cadmium O,O'-dethyl (I) and O,O'-di-sec-butyl phosphorodithioate (II) complexes have been synthesized and characterized in detail by(13)C, P-31, and Cd-113 CP/MAS NMR. X-ray crystallography shows that complex II has a binuclear molecular structure [Cd-2{S2P(O-s-C4H9)(2)}(4)]. For P-31 and Cd-113 NMR signals, the chemical shift anisotropy delta(aniso) and the asymmetry parameter eta have been calculated. The P-31 NMR signals are assigned to the terminal and bridging ligands in the complexes.
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| 2. |
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| 3. |
- Loseva, O.V., et al.
(author)
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Structural organization of dithiocarbamate heteropolynuclear gold(III)-cadmium complexes from X-ray crystallography and 113Cd MAS NMR spectroscopy data
- 2013
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In: Journal of Structural Chemistry. - 0022-4766 .- 1573-8779. ; 54:3, s. 598-606
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Journal article (peer-reviewed)abstract
- We study the interaction of dialkyl substituted and cyclic cadmium dithiocarbamates with [AuCl4]− anions in 2M HCl medium. The state of the chemisorbents upon contact with AuCl3 solutions is controlled by 113Cd MAS NMR spectroscopy. The result of the heterogeneous reactions involving chemisorption binding of gold(III) from the solutions and partial ion exchange is the formation of heteropolynuclear gold(III)-cadmium complexes. The crystal and molecular structure of the acetone-solvated form of polymeric bis-(N,N-diethyldithiocarbamato-S,S′) gold(III) hexachlorodicadmate is identified by single-crystal XRD. The main structural moieties of the compound are complex [Au{S2CN(C2H5)2}2]+ cations and [Cd2Cl6]2− anions. The structural self-organization of the complex at the supramolecular level is attributed to the secondary Au…S bonds between neighboring isomeric complex gold(III) cations; the bonding results in the formation of linear polymer ([Au{S2CN(C2H5)2}2]+) n chains, with [Cd2Cl6]2− anions alternating to the right and left of the chains.
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| 4. |
- Loseva, O.V., et al.
(author)
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Tetranuclear heteroleptic mercury(ii) complexes of the composition [Hg4(S2CNPr2)6(NO3)2] and [Hg4(S2CNPr2)4Cl4] : structural organization, principles of construction of supramolecular polymeric chains, and thermal behavior
- 2019
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In: Russian chemical bulletin. - : Springer. - 1066-5285 .- 1573-9171. ; 68:4, s. 782-792
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Journal article (peer-reviewed)abstract
- New heteroleptic mercury(ii) complexes [Hg4(S2CNPr2)6(NO3)2] (1) and [Hg4(S2CNPr2)4Cl4] (2) were synthesized and characterized by single-crystal X-ray dif raction and 13C and 15N MAS NMR spectroscopy. In these complexes, the metal atoms are linked in pairs by bridging dipropyldithiocarbamate ligands (Pr2Dtc) to form tetranuclear cations and molecules. The further structural organization of compound 1 to the polymeric chains [Hg4(S2CNPr2)6(NO3)2]n occurs due to the linking of [Hg4(S2CNPr2)6]2+ cations by pairs of bridging nitrate groups. The formation of the supramolecular polymeric structure of 2 is determined by pairwise secondary Hg⋯Cl bonds between the cyclic [Hg4(S2CNPr2)4Cl4] molecules, in which the central eight-membered metallocycle [Hg4S4] adopts a distorted chair conformation. The thermal behavior of compounds 1 and 2 was studied by simultaneous thermal analysis.
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| 5. |
- Rodinaa, T.A., et al.
(author)
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CP/MAS NMR (13C, 15N, and 113Cd), thermal behavior, and sorption properties of cadmium Di-Iso-Butyldithiocarbamate : The Gold(III)-Binding species sorbed from solutions
- 2012
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In: Russian Journal of Inorganic Chemistry. - 0036-0236 .- 1531-8613. ; 57:11, s. 1490-1495
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Journal article (peer-reviewed)abstract
- The structure and thermal behavior of cadmium di-iso-butyldithiocarbamate (I) have been stud- ied by solid-state 13C and 15N CP/MAS NMR and simultaneous thermal analysis (STA). The cadmium com- plex forms two crystalline polymorphs, a and β. The structure of each of the polymorphs contains two struc- turally nonequivalent binuclear [Cd 2{S 2CN(iso-C 4H 9) 2} 4] molecules. The STA data have shown the possibil- ity of the α-I β-I phase transition. Studying the thermal behavior of the complex has demonstrated that the end product of thermodestruction is a fine yellow-orange powder of CdS. The sorption properties of I have been studied with respect to gold(III) chloride solutions in 2 M HCl. It has been found that gold(III) is efficiently sorbed from strong acid solutions in the Au3+ concentration range 0.032-3.220 mg/mL. On the basis of multinuclear (13C, 15N, and 113Cd) MAS NMR data, it has been demonstrated that the individual gold(III)-binding species in the sorption system is the ionic gold(III) cadmium-complex of composition [Au{S2CN(iso-C 4H 9) 2} 2] 2[CdCl 4
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