10108-64-2Relevant articles and documents
Synthesis, thermal study and some properties of Zn(II), Cd(II) and Pb(II) compounds with mono-, di- and trichloroacetates
Czylkowska,Raducka,Mierczyński
, p. 937 - 946 (2017)
New complexes with formulae: Zn(CClH2COO)2·2H2O, Zn(CCl2HCOO)2·2H2O, Zn(CCl3COO)2·2H2O, Cd(CCl2HCOO)2·H2O, Cd(CCl3/su
Dean, R. S.
, p. 1134 - 1137 (1915)
The Tetrachloridoaurates(III) of Zinc(II) and Cadmium(II)
Landvogt, Christian,Beck, Johannes
, p. 391 - 396 (2018)
The first salt-like compounds of dications with [AuCl4]– anions are reported. The compounds Zn[AuCl4]2·(AuCl3)1.115 (1) and Cd[AuCl4]2 (2) are obtained from reactions of MCl2 (M = Zn, Cd) and elemental gold in liquid chlorine at ambient temperature under autogenous pressure and subsequent annealing at 230 °C. The structure of 1 represents an incommensurately modulated composite [superspace group C2/c(α0γ)0s] built of two subsystems. The first subsystem contains chains of zinc(II) tetrachloridoaurate(III), which feature a slightly distorted octahedral coordination of Zn and can be described by the Niggli formula 1∞{Zn[AuCl4]1/1[AuCl4]2/2}. The second subsystem consists of Au2Cl6 molecules, which are located in channels built up by the first subsystem. The structural parameters of the hosted Au2Cl6 molecules show only small deviations from neat AuCl3. The crystal structure of Cd[AuCl4]2 (2) consists of chains built of Cd2+ ions coordinated by bridging [AuCl4]– anions and alternating Cd-Au sequence. Cd has a distorted octahedral coordination environment.
REFLECTION SPECTRA OF CdCl2-CdBr2 MIXED CRYSTALS IN THE REGION OF BAND GAP EXCITONS.
Kondo,Matsumoto
, p. 2379 - 2384 (1981)
The low lying exciton spectra were measured on CdCl//2-CdBr//2 mixed crystals using the cleaved surfaces. The purpose is to investigate how the crystal field contributes to the exciton transitions in the mixed system and to obtain some information about t
Oxidation of cadmium with dicarbonylcyclopentadienyliron chloride in dimethylformamide
Usanov,Maslennikov,Spirina,Maslennikov
, p. 1351 - 1353 (2005)
The kinetic and activation parameters of oxidation of cadmium with dicarbonylcyclopentadienyliron chloride in dimethylformamide were determined. The apparent equilibrium constants, enthalpy, and entropy of adsorption of the reactants on the metal surface
Zimmerman, J. F.,McDonald, H. J.
, p. 857 - 868 (1947)
One-dimensional Cd metal string complex: Synthesis, structural and thermal properties of [(HPy)3(Cd3Cl9)] ∞
Jian, Fang Fang,Zhao, Pu Su,Wang, Qing Xiang,Li, Ying
, p. 1473 - 1477 (2006)
The cadmium metal string complex of [(HPy)3(Cd 3Cl9)]∞ (Py = pyridine) was prepared. Its structural and thermal properties were also investigated. Its existing form in gas phase has been elucidated by density functional calculations. The crystal structure consists of protonation pyridine cations and infinite one-dimensional chains of [Cd3Cl9]3- anions. Each Cd atom is octahedrally surround by bridged chlorine atoms, giving rise to polymeric chain along the a-axis. The pyridinium lie in the middle of the chain to balance the charge. The DFT study indicates that the HOMO orbital of optimized structure is mainly localized on the middle six chloride ions and the LUMO is delocalized. Differential thermal gravimetric analysis shows there is no presence of any structural phase transitions.
Synthesis, crystal and electronic structure of Cd2PCl 2: Influence of cation on characteristic structural features of pnictide halides of Group 12 metals
Olenev,Oleneva,Shevelkov,Popovkin
, p. 570 - 575 (2003)
Cadmium phosphide chloride Cd2PCl2 was prepared by the ampule synthesis method at 770 K. Crystals were obtained from the gaseous phase by the chemical transport reaction. The crystal structure of Cd 2PCl2 is built of the P2Cd6 octahedra, which are linked in layers by sharing four equatorial vertices. The layers alternate in a fashion analogous to that observed in the K 2NiF4 structural type and are linked in a three-dimensional framework through the halogen atoms. The characteristic features of the crystal and electronic structures of pnictide halides M 2PCl2 (M = Cd or Hg) were considered based on X-ray diffraction data and results of quantum-chemical calculations.
Tuning the inclusion properties and solid-state reactivity of second sphere adducts using conformationally flexible bidentate ligands
Guo, Fang,Wang, Xu,Guan, Hong-Yu,Yu, Hai-Bin,Li, Lei,Chen, Shan-Shan,Famulari, Antonino,Martí-Rujas, Javier
, p. 2842 - 2852 (2015)
Second-sphere coordination refers to any intermolecular interaction with the ligands directly bound to the primary coordination sphere of a metal ion. In this article, we have successfully applied the second-sphere coordination approach in the construction of versatile host frameworks that can accommodate various guest molecules. We have used a family of bidentate flexible molecules as second-sphere ligands, and the tetrachlorometalate anion [MCl4]2- (where M = Cu, Co, Cd, Zn, and Hg) as the primary coordination sphere to synthesize new second sphere adducts. By introducing an alkyl spacer -(CH2)n- (n = 1, 2, 3, 4) to bibenzylamine (L0), the ligands L1, L2, L3, and L4 with higher degree of flexibility were synthesized. Different guest molecules such as alcohol, acetic acid, acrylic ester, or acetonitrile can be included in the host framework self-assembling diprotonated L1-L4 and [MCl4]2-, leading to a novel type of supramolecular assemblies: CH3CH2OH[L2]2H+·[CuCl4]2- (2), CH3OH[L3]2H+·[MCl4]2- (3), CH3COOH[L3]2H+·[CuCl4]2- (4), CH2CHCOOCH3'[L3]2H+·[MCl4]2- (5-7), CH3CN·H2O'[L4]2H+·[MCl4]2- (8-9), and CH3OH'[L4]2H+·[MCl4]2- (10). L2 forms the quasi-chelating charge-assisted N-H···Cl hydrogen bonds with [MCl4]2- that can transform in the solid-state to a chelated coordination complex following a mechanochemical dehydrochlorination reaction. By increasing the number of methylene groups, ligands L3 and L4 exhibit considerable conformational diversity due to the higher flexibility induced by the backbone chains. The -(CH2)n- spacer lengths of the ligands influences the structural dimensionality, and its solid-state mechanochemical reactivity preventing the transformation from salt [L3-4]2H+·[MCl4]2- to the chelating coordination complex [(MCl2)(L3-4)]. Moreover, the thermal stability of the second sphere adducts has been monitored by thermogravimetric analyses and X-ray powder diffraction (PXRD). We demonstrate that some of the second sphere adducts are dynamic, showing reversible guest release/uptake involving crystalline-to-amorphous-to-crystalline phase transformations. QuantumMechanical (QM) demonstrate that ligands with backbone lengths longer than -(CH2)2- are reticent to react via dehydrochlorination reaction because of the backbone chain length, the symmetry and orientation of the frontier molecular orbitals (FMOs), while for the -(CH2)2-, the length and orientation of the FMOs is optimal for the reaction to occur.
Dietzel, A.
, p. 217 - 219 (1944)
Mitra, Samiran,Singh, Langonjam Kanhai
, p. 327 - 338 (1991)
King, E. L.
, p. 319 - 322 (1949)
Crystal structure and fluorescence of supramolecular compound [Cd 3Cl6C6N2O8H 22]n
Guo, Ge,Sun, Ruzhong,Dang, Yuanlin
, p. 1967 - 1971 (2011)
A novel trinuclear supramolecular compound of [Cd3Cl 6C6N2O8H22]n has been synthesized under alanine with cadmium chloride to the reaction in aqueous solution conditions, and characterized by elemental analyses, FT-IR spectroscopy, X-ray diffraction, DTA-TG. Its crystal structure was determined from single crystal X-ray diffraction. The title compound crystallizes in monoclinic system with space group P21/n. The crystal structure of the compound is characterized by forming a trinuclear 3D supramolecular structure with three cadmium(II) ions, six chloride ions, two molecules D, L-alanine in salt, two coordinated water molecules and two crystal water molecules. Cd(1) is distorted octahedrally coordinated with two oxygen atoms (from the adjacent amino acid and water molecule) and four chloride ions; Cd(2) is smaller extent distorted octahedrally coordinated with two oxygen atoms (from the adjacent amino acids) and four chloride ions. Cd(1) and Cd(2) connected by the bridge bonds of μ2-Cl, μ3-Cl and the carboxyl oxygen into ID chain structure, which further connected by hydrogen bonds to form 3D supramolecular network. Fluorescence test showed that the compound has a good photoluminescence property, respectively. Pleiades Publishing, Ltd., 2011.
Potentiometric Study of Cadmium(II) Halide and Thiocyanate Complexes in Methanol. Determination of Thermodynamic Stability Constants of Third and Fourth Complexation Step
Soe, Khin Nwe,Doe, Hidekazu,Kitagawa, Toyokichi
, p. 2981 - 2983 (1988)
The stability constants, K3 and K4, of IIXn>2-n (X-=Cl-, Br-, NCS-) complexes in methanol have been determined by X- ion measurements with Ag-
STUDIES ON TRANSITION-METAL PICOLINE COMPLEXES - I. PREPARATION AND THERMOANALYTICAL INVESTIGATIONS.
Liptay,Borbely-Kuszmann,Nagy
, p. 91 - 96 (1987)
A large number of transition-metal picoline halides were prepared, and their thermal decompositions were investigated by TG, DTG, DTA and thermomicroscopy. The compounds were classified on the basis of their thermal properties and two possible mechanisms of thermal decomposition were established.
Goodgame, Margaret,Okey, J. Nigel
, p. 179 - 184 (1986)
Synthesis, characterization and calorimetric study of zinc group halide adducts with aniline
da Silva Jr., Umberto G.,de Oliveira, ótom A.,de Farias, Robson F.
, p. 2 - 4 (2006)
The adducts ZnCl2·2an, ZnBr2·1.5an, CdCl2·2an, CdBr2·2an, CdI2·2an, HgCl2·2an and HgBr2·2an (where an = aniline) were synthesized and characterized by elemental analysis, infrare
Cd8As7Cl: A Novel Pnictidohalide with a New Structure Type
Shevelkov, Andrei V.,Reshetova, Ludmila N.,Popovkin, Boris A.
, p. 282 - 285 (1997)
A novel cadmium arsenide chloride, Cd8As7Cl (I), has been prepared by a two-step stoichiometric synthesis. It crystallizes in the cubic space groupP23 (No. 195) with a unit cell parametera=7.2660(10) A (Z=1). The crystal structure has been solved based on single-crystal X-ray diffraction data (ω-2θscans, least-squares refinement onF2) toR=0.0258 and wR2=0.0435. I possesses a new type of crystal structure that is described as a distorted (not dense) primitive cubic packing of cadmium atoms, the cubic voids of which are filled by either arsenic or chlorine atoms or As-As pairs. The structure of I exhibits a position disorder for one-half of the cadmium atoms. The As-As pairs are cubically surrounded by eight cadmium atoms, the As-As separation being 2.43 A, which is longer than in all known cadmium and mercury arsenide halides. Attempts to synthesize the corresponding bromide and iodide failed.
Romero, M. A.,Salas, J. M.,Lopez, R.,Gutierrez, M. D.
, p. 659 - 664 (1988)
Formation of cadmium chlorides via cadmium dissolution in chloride melts
Kozin,Omel'chuk
, p. 75 - 80 (2006)
The kinetics and mechanism of the formation of complex Cd(I) ions via the reaction of metallic cadmium with Cd2+ ions in the Cd 0-CdCl2-ZnCl2-NH4Cl system are studied spectroscopically. The formation of Cd22+ and Cd23+ is evidenced by absorption bands around 270 and 335 nm, respectively, in the electronic spectrum of the melt. The anode current efficiency is determined for cadmium electrorefining in a chloride melt. A mechanism is proposed for the anodic dissolution of cadmium at different current densities and process temperatures. Pleiades Publishing, Inc., 2006.
[Cd2(Te6O13)][Cd2Cl 6] and Cd7Cl8(Te7O17): Novel tellurium(IV) oxide slabs and unusual cadmium chloride architectures
Jiang, Hai-Long,Mao, Jiang-Gao
, p. 717 - 721 (2006)
Initial attempts to prepare new Ln-Cd-Te-O-Cl compounds led to the isolation of two novel cadmium tellurium(IV) oxychlorides with two different types of structures, namely, [Cd2(Te6O13)] [Cd2Cl6] and Cd7Cl8(Te 7O17). Both compounds feature novel polymeric tellurium(IV) oxide anions and unusual cadmium chloride substructures. The structure of [Cd2(Te6O13)][Cd 2Cl6] is composed of 1D [Cd2Cl 6]2- double chains and (002) [Cd2(Te 6O13)]2+ layers. The 1D Te6O 132- slab of the [Cd2(Te6O 13)]2+ layer is formed by TeO3, TeO 4, and TeO5 groups via corner- and edge-sharing, and it contains six- and seven-membered tellurium(IV) polyhedral rings. The structure of Cd7Cl8(Te7O17) features a 3D network with long-narrow tunnels along the b axis. The two types of structural building blocks are 1D [Te7O17]6- anions and unusual corrugated [Cd7Cl8]6+ layers based on cyclohexane-like Cd3Cl3 rings.
Energetics of formation of adducts of N-methyl-2-pyrrolidone with zinc(II) family metal halides - A thermochemical study
Nunes, Ana L.C.,De Queiroz, Jose C.,Dias, Francisco S.,Vieira, Eunice F.S.
, p. 57 - 63 (1997)
Thermochemical data for adducts of N-methyl-2-pyrrolidone (NMP) with zinc(II), cadmium(II) and mercury (II) halides have been obtained from solution calorimetry. The technique provided the values for the dissolution enthalpies (ΔiH0) of MX2 (M = Zn, Cd, Hg; X = Cl, Br, I) metal halides, the NMP lactam and MX2.nNMP adducts, which were used to determine the standard molar enthalpies of acid-base reaction in the condensed state (ΔrH0) for the adducts, by using appropriate thermodynamic cycles. From ΔrH0 values and literature data, the following thermochemical parameters have been calculated: standard enthalpy of formation (ΔfH0), standard enthalpy of decomposition (ΔdH0), standard lattice enthalpy (ΔlattH0), standard enthalpy of acid-base reaction in the gaseous phase (ΔgH0) and the mean dissociation enthalpy of the metal-oxygen bond, D (M-O) have been established. In order to evaluate the methyl group influence on the donor oxygen strength of the NMP lactam, the obtained thermochemical data are compared with those previously published for analogous 2-pyrrolydone (BuL) compounds. The influence of the ionic and covalent character of the metal halides has been taken into account in the metal-oxygen interaction processes.
Solution and solid study of Zn(II) and Cd(II) complexes with N-(6-amino-3,4-dihydro-3-methyl- 5-nitroso-4-oxo-pyrimidin-2-yl)-glycine as ligand. Crystal structures of [ZnL2(H2O)4]·6H2O and {[Cd(μ-L)Cl(H2O)2]·H2O}(n)
Arranz-Mascarós,López-Garzón,Gutierrez-Valero,Godino-Salido,Moreno
, p. 137 - 143 (2000)
Reactions of N-(4-amino-1,6-dihydro-1-methyl-5-nitroso-6-oxo-pyrimidin-2-yl)glycine with Zn(II) and Cd(II) (1:1 and 1:4 metal/ligand ratios, in aqueous media at 35 °C and 0.1 M KCl ionic strength) were studied by potentiometric methods. This study has revealed a similar qualitative behaviour to that found by us for this family of N-pyrimidine aminoacids, the primary coordination site being either the pyrimidine or the carboxylate group depending on whether the ligand acts in neutral form or deprotonated, respectively. In solid state two complexes were obtained by working in 1:1 metal-to-ligand ratio: [Zn(L)2(H2O)4]·6H2O and {[Cd(μ-L)Cl(H2O)2]·H2O}(n), which were characterised by IR and NMR spectroscopies, TG and DSC techniques and single crystal X-ray diffraction. The former complex is mononuclear with the Zn(II) ion hexacoordinated in a distorted octahedral geometry. The coordination sphere is formed by four water molecules and two ligands coordinating in a monodentate fashion through the carboxylate group. The Cd(II) complex consists of a 1D infinite chain, with the metal ion heptacoordinated in a distorted pentagonal bipyramid. The ligand bridges the metal ions coordinating in a bis-didentate fashion through the pyrimidine and the carboxylate group. The nature of these complexes is very different to that shown by the Zn(II) and Cd(II) complexes with the related methionine derivative, which is attributed to he effect of the R substituent on the aminoacid moiety. (C) 2000 Elsevier Science S.A.
Binding forms of gold(III) from solutions by cadmium diethyl dithiocarbamate: Thermal behavior and role of secondary interactions in the supramolecular self-assembly of polymeric Complexes ([Au{S2CN(C 2H5)2}2][AuCl4]) n and [Au{S2CN(C2H5) 2}Cl2] n
Rodina,Ivanov,Gerasimenko
, p. 100 - 108 (2014/03/21)
The chemisorption interaction between the binuclear cadmium diethyl dithiocarbamate (EDtc), [Cd2{S2CN(C2H 5)2}4], (chemisorbent I) and AuCl3 solutions in 2 M HCl results in the formation of polymeric gold(III) complexes: ([Au{S2CN(C2H5)2} 2][AuCl4]) n (II) and [Au{S 2CN(C2H5)2}Cl2] n (III) with the same Au: EDtc: Cl ratio (1: 1: 2). The alternating centrosymmetric cations and anions of complex II are structurally self-assembled to form linear polymeric chains: the gold atom in [Au{S2CN(C 2H5)2}2]+ forms secondary Au(1)...Cl(1) bonds (3.7784 A) with two neighboring [AuCl 4]- anions. This binding is additionally strengthened by secondary S(1)...Cl(1) interactions (3.4993 A). The mixed-ligand complex III comprises two structurally non-equivalent molecules [Au{S 2CN(C2H5)2}Cl2]: A - Au(1) and B - Au(2), each being in contact with two nearest neighbors through pairs of unsymmetrical secondary bonds: Au(1)...S(1)a/b 3.4361/3.6329; and Au(2)...S(4)c/d 3.4340/3.6398 A. At the supramolecular level, this gives rise to independent zigzag-like polymeric chains, (...A...A...A...) n and (...B...B...B...) n along which antiparallel isomeric molecules of III alternate. The chemisorption capacity of cadmium diethyl dithiocarbamate calculated from the gold(III) binding reaction is 963.2 mg of gold per 1 g of the sorbent. The recovery conditions for the bound gold were elucidated by simultaneous thermal analysis of II and III. The DSC curves reflect different sets of heat effects, because thermolysis occurs for complex molecules (III) or for cations and anions (II). Nevertheless, the patterns of experimental TG curves are similar despite different structures of the complexes. The final product of thermal transformations is reduced gold.
