Abstract
The title crystalline compound, [Cu2(NCS)2(C9H16N2)2], was obtained from the reaction of copper(I) thio-cyanate (CuSCN) with (N-prop-2-en-1-yl)piperidine-1-carbo-thio-amide as a chelating and bridging thio-urea ligand in chloro-benzene. The Cu2S2 core of the dimeric mol-ecule is situated on a crystallographic inversion centre. The copper atom is coordinated by a thio-cyanate nitro-gen atom, each sulfur atom of the two thio-urea ligands, and the C=C double bond of the ligand in a distorted tetra-hedral geometry. The dimers are linked by N-H⋯S hydrogen bonds, forming a network extending in two dimensions parallel to (100).
Highlights
The title crystalline compound, [Cu2(NCS)2(C9H16N2)2], was obtained from the reaction of copper(I) thiocyanate (CuSCN) with (N-prop-2-en-1-yl)piperidine1-carbothioamide as a chelating and bridging thiourea ligand in chlorobenzene
The copper atom is coordinated by a thiocyanate nitrogen atom, each sulfur atom of the two thiourea ligands, and the C C double bond of the ligand in a distorted tetrahedral geometry
The dimers are linked by N— HÁ Á ÁS hydrogen bonds, forming a network extending in two dimensions parallel to (100)
Summary
N-substituted thiourea and N, N0disubstituted thiourea, are well-known ligands to copper ions, such as for their structural relatedness of proteins in bioinorganic chemistry and controlling redox potentials of copper ions in electrochemistry. Copper–thiourea complexes [Cu(tu)s] have been investigated as electronic materials, for precursors of copper sulfide to be applied as semiconductors (Shamraiz et al, 2017; Sarma et al, 2019; Patel et al, 2019), photocatalysts (Tran et al, 2012; Pal et al, 2015), and sensors (Liu & Xue, 2011; Sabah et al, 2016; Sagade & Sharma, 2008). The solubility of Cu(tu)s in non-polar solvents is a potentially important property for their application as electronic materials. In order to synthesize a hydrophobic Cu(tu)s, we developed an allyl and a piperidinyl group bearing thiourea, (N-prop-2-en-1-yl)piperidine-1-carbothioamide, as a hydrophobic bidentate ligand and report here the crystal structure of the title non-ionic CuI complex containing thiocyanates as coordinating anions.
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