[Cu₄₀Se₁₆(S-C₆H₄-CN)₈(dppm)₈]: A Disc-like Copper Cluster with a Nitrile-functionalized Ligand Shell

Abstract

The new copper chalcogenide cluster [Cu 40 Se 16 (S-C 6 H 4 -CN) 8 (dppm) 8 ] (1) with nitrile groups in the organic ligand shell has been synthesized and characterized by single-crystal X-ray diffraction and IR spectroscopy. The arrangement of the chalcogen atoms in 1 is similar to a close packing and is best described as two parallel layers with an ab stacking sequence. The resulting structure is a rare example of a disc-like cluster molecule.

Copper nanoclusters: designed synthesis, structural diversity, and multiplatform applications

“…Interestingly compound (1) is a dimer in the solid state. Similar A-B layered arrangement of chalcogenide substructure was found in a [Cu40Se16(S-C6H4-CN)8(dppm)8] cluster, the structure of which was published in 2013 by Robert Langer et al 191 Starting from 2013 C. W. Liu together with Jean-Yves Saillard reported a number of selenide-CuNCs, namely [Cu7Br{Se2P(O i Pr)2}6], 154 186 accompanied with extensive computational analyses of the structures. Note, that in these clusters the Se atoms are not bridged, but rather are part of the ligand structure and composition (selenolates).…”