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Copper(I) Clusters with Trifunctional Silyl Amide Ligands. Synthesis and Crystal Structures of [Li(THF) 4 ] 2 [Cu 10 {RSi(NPh) 3 } 4 ] (R = Me, Ph, Vin)
Author(s) -
Wagner Christoph,
Merzweiler Kurt
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201500609
Subject(s) - silylation , steric effects , copper , amide , crystallography , crystal structure , cluster (spacecraft) , cubane , chemistry , solvent , silicon , stereochemistry , organic chemistry , catalysis , computer science , programming language
Treatment of CuCl with the lithiated silyl amides RSi(NLiPh) 3 (R = Me, Ph, Vin) in THF as solvent led to the formation of the novel Cu I cluster compounds [Li(THF) 4 ] 2 [Cu 10 {RSi(NPh) 3 } 4 ]. For each of the three compounds the X‐ray crystal structure analysis revealed similar Si 4 N 12 Cu 10 cores which are based on cubane like Cu 8 cores bearing two additional peripheral copper atoms. The copper atoms are coordinated nearly linearly by the μ 5 ‐bridging silyl amide ligands with Cu–N distances in the range of 187.1(3) to 194.5(4) pm and N–Cu–N angles of 171.6(1) to 178.7(1)°. For each of the compounds the structural parameters are very similar which indicates that the structures are barely influenced by the different steric requirements of the organic groups bound to silicon.