Synthesis, crystal structure and properties of Cd(NCS)2 coordination compounds with two different Cd coordination modes
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Aleksej Jochim
Abstract
Reaction of Cd(NCS)2 with 4-methoxypyridine leads to the formation of four new compounds, of which one crystallizes in two different polymorphs. In Cd(NCS)2(4-methoxypyridine)4·(4-methoxypyridine)2 (1) and Cd(NCS)2(4-methoxypyridine)4 (2-I and 2-II) discrete complexes are found, in which the Cd cations are octahedrally coordinated by four 4-methoxypyridine co-ligands and two terminally N-bonded thiocyanate anions. For the polymorphs 2-I and 2-II no single crystals are available and therefore, the corresponding Mn(II) compound (2-I-Mn) was prepared, which is isotypic to 2-I, as proven by a Rietveld refinement. The crystal structure of 2-II was solved and refined from XRPD data. In [Cd(NCS)2(4-methoxypyridine)2]n (3), the Cd cations are also octahedrally coordinated but linked into linear chains by pairs of thiocyanate anions with all ligands in trans-position. {[Cd(NCS)2]3(4-methoxypyridine)5}n (4) also consists of chains but two different Cd coordination modes are observed. Two of the three crystallographically independent Cd cations show an octahedral coordination with a trans- or cis-arrangement of the N and S atoms of the anionic ligands, whereas the third one is in a distorted square-pyramidal coordination, with cis-coordination of the thiocyanate N and S atoms. Measurements using simultaneous thermogravimetry and differential scanning calorimetry of 2-I and 2-II show different heating rate dependent mass steps, in which the co-ligands are removed. In some of the residues obtained after the respective TG steps compound 3 was detected but no phase pure samples could be obtained.
Dedicated to: Professor Wolfgang Bensch on the occasion of his 65th birthday.
Funding source: Deutsche Forschungsgemeinschaft
Award Identifier / Grant number: Na 720/5-2
Funding statement: This project was supported by the Deutsche Forschungsgemeinschaft (Project No. Na 720/5-2) and the State of Schleswig-Holstein. We thank Prof. Dr. Wolfgang Bensch for access to his experimental facilities.
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©2019 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- In this Issue
- Preface
- Congratulations to Professor Wolfgang Bensch on the occasion of his 65th birthday
- Orthorhombic sulfur from Cap Garonne, Mine du Pradet
- An unprecedented structural phase transition in struvite-type compounds: dimorphism of KMgAsO4(H2O)6
- ZrNiAl-type gallides with pronounced metal-metal bonding, and the dimorphism of ScPdGa
- Tripodal methanetrisulfonate ligands in the trinuclear complex {Ni3[CH(SO3)3]2(NMP)8}
- Crystal structure of the high-temperature form of the trisulfide Cs2S3 and the (3+1)D modulated structure of the telluride K37Te28
- Synthesis, crystal structure and properties of Cd(NCS)2 coordination compounds with two different Cd coordination modes
- Crystalline orthorhombic Ln[CO3][OH] (Ln=La, Pr, Nd, Sm, Eu, Gd) compounds hydrothermally synthesised with CO2 from air as carbonate source
- The role of synthesis conditions for structural defects and lattice strain in β-TaON and their effect on photo- and photoelectrocatalysis
- Determination of the charge of Al13 Keggin oligocations intercalated into synthetic hectorite
- Electronic and magnetic properties of the 2H-NbS2 intercalated by 3d transition metal atoms
- CsTb3STe4 und CsTb5S2Te6: Zwei pseudo-ternäre Caesium-Terbium-Chalkogenide mit geordneten S2−- und Te2−-Anionen
- Synthesis, molecular, and crystal structures of 3d transition metal cyanocyclopentadienides [M(MeOH)n(H2O)4–n{C5(CN)4X}2] (M=Mn, Fe, Co, Ni, Cu, Zn; X=H, CN, NH2, NO2)
- Crystal structures and FT-IR spectra of three N,N-dicyclohexylmethylammonium halides C13H26N+X− (X = Cl, Br, I)
- Crystal structure and magnetic properties of the ternary rare earth metal-rich transition metallides RE14T3Al3 (RE = Y, Gd–Tm, Lu; T = Co, Ni)
- Modulated vacancy ordering in SrGe6−x (x≈0.45)
- Monitoring the solvation process and stability of Eu2+ in an ionic liquid by in situ luminescence analysis
Articles in the same Issue
- Frontmatter
- In this Issue
- Preface
- Congratulations to Professor Wolfgang Bensch on the occasion of his 65th birthday
- Orthorhombic sulfur from Cap Garonne, Mine du Pradet
- An unprecedented structural phase transition in struvite-type compounds: dimorphism of KMgAsO4(H2O)6
- ZrNiAl-type gallides with pronounced metal-metal bonding, and the dimorphism of ScPdGa
- Tripodal methanetrisulfonate ligands in the trinuclear complex {Ni3[CH(SO3)3]2(NMP)8}
- Crystal structure of the high-temperature form of the trisulfide Cs2S3 and the (3+1)D modulated structure of the telluride K37Te28
- Synthesis, crystal structure and properties of Cd(NCS)2 coordination compounds with two different Cd coordination modes
- Crystalline orthorhombic Ln[CO3][OH] (Ln=La, Pr, Nd, Sm, Eu, Gd) compounds hydrothermally synthesised with CO2 from air as carbonate source
- The role of synthesis conditions for structural defects and lattice strain in β-TaON and their effect on photo- and photoelectrocatalysis
- Determination of the charge of Al13 Keggin oligocations intercalated into synthetic hectorite
- Electronic and magnetic properties of the 2H-NbS2 intercalated by 3d transition metal atoms
- CsTb3STe4 und CsTb5S2Te6: Zwei pseudo-ternäre Caesium-Terbium-Chalkogenide mit geordneten S2−- und Te2−-Anionen
- Synthesis, molecular, and crystal structures of 3d transition metal cyanocyclopentadienides [M(MeOH)n(H2O)4–n{C5(CN)4X}2] (M=Mn, Fe, Co, Ni, Cu, Zn; X=H, CN, NH2, NO2)
- Crystal structures and FT-IR spectra of three N,N-dicyclohexylmethylammonium halides C13H26N+X− (X = Cl, Br, I)
- Crystal structure and magnetic properties of the ternary rare earth metal-rich transition metallides RE14T3Al3 (RE = Y, Gd–Tm, Lu; T = Co, Ni)
- Modulated vacancy ordering in SrGe6−x (x≈0.45)
- Monitoring the solvation process and stability of Eu2+ in an ionic liquid by in situ luminescence analysis
