Metal-betaine interactions. XVIII. Crystal structure of tetraaqua(trimethylammonioacetato)copper(III) sulfate trihydrate, [Cu(Me3NCH2CO2)(H2O)4](SO4) · 3H2O

As a contribution to a better understanding of the coordination properties of imidazolinium–dithiocarboxylate ligands towards copper, the first route towards oligonuclear copper–betaine complexes has been developed. Treatment of the coordination polymer [CuCl(Bz2ImCS2)]n (1) suspended in acetonitrile with thallium(I) hexafluorophosphate in different ratios affords the discrete copper(I) cluster cations [Cu4(Bz2ImCS2)4Cl2]2+ (2) and [Cu3(Bz2ImCS2)5]3+ (3). Single‐crystal X‐ray diffraction of 2(PF6)2·2MeCN and 3(PF6)3·2MeCN·Et2O reveals the occurrence of unique copper–sulfur architectures. The Cu–S/Cl skeleton of 2 contains two elongated trigonal‐prismatic {Cu4S2} entities which share a common {Cu4} face. In contrast, the Cu atoms of 3 define an isosceles triangle. Both compounds exhibit distorted tetrahedral copper coordination sites, based on S3Cl (within 2) and S4 (within 3) donor sets, and host dithiocarboxylate zwitterions in each of two different coordination modes. Overall, three different types of binding principles towards copper are presented here.

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A Sophisticated Approach towards a New Class of Copper(I)–Sulfur Cluster Complexes with Imidazolinium–Dithiocarboxylate Ligands

Ortmeyer

Flörke

Henkel

et al. 2017

Eur J Inorg Chem

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Characterization and crystal structure of copper(II) complex with betaine having a water-wheel-like structure

Nakagawa

Inomata

Howell

1999

Inorganica Chimica Acta

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Metal-betaine interactions. XVIII. Crystal structure of tetraaqua(trimethylammonioacetato)copper(III) sulfate trihydrate, [Cu(Me₃NCH₂CO₂)(H₂O)₄](SO₄) · 3H₂O

Abstract: The title complex (C

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A Sophisticated Approach towards a New Class of Copper(I)–Sulfur Cluster Complexes with Imidazolinium–Dithiocarboxylate Ligands

A Sophisticated Approach towards a New Class of Copper(I)–Sulfur Cluster Complexes with Imidazolinium–Dithiocarboxylate Ligands

Characterization and crystal structure of copper(II) complex with betaine having a water-wheel-like structure

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