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[Cu 24 S 12 (PMe i Pr 2 ) 12 ], [Cu 28 S 14 (P t Bu 2 Me) 12 ], [Cu 50 S 25 (P t Bu 2 Me) 16 ], [Cu 70 Se 35 (P t Bu 2 Me) 21 ], [Cu 31 Se 15 (SeSiMe 3 )(P t Bu 2 Me) 12 ] and [Cu 48 Se 24 (PMe 2 Ph) 20 ]: New Sulfur‐ and Selenium‐Bridged Copper Clusters
Author(s) -
Dehnen Stefanie,
Fenske Dieter
Publication year - 1996
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.19960021113
Subject(s) - trimethylsilyl , copper , selenium , cluster (spacecraft) , chemistry , crystallography , sulfur , chalcogen , medicinal chemistry , organic chemistry , computer science , programming language
Reaction of copper(I) acetate with bis(trimethylsilyl)chalcogenides E‐(SiMe 3 ) 2 (E = S, Se) in the presence of tertiary phosphines in organic solvents leads to the formation of chalcogenbridged copper clusters in crystalline form. In recent investigations, the following structures were isolated and characterised by X‐ray crystallography: [Cu 24 S 12 ‐(PMe i Pr 2 ) 12 ] ( 1 ), [Cu 28 S 14 (P t Bu 2 Me) 12 ] ( 2 ), [Cu 50 S 25 (P t Bu 2 Me) 16 ] ( 3 ), [Cu 70 Se 35 ‐(P t Bu 2 Me) 21 ] ( 4 ), [Cu 31 Se 15 (SeSiMe 3 )‐(P t Bu 2 Me) 12 ] ( 5 ) and [Cu 48 Se 24 (PMe 2 ‐Ph) 20 ] ( 6 ). The cluster cores of 1‐6 have new structures or new structural characteristics and go some way towards providing an insight into the mechanisms of cluster formation reactions. With the help of the aforementioned compounds a number of structure principles that govern sulfur‐and selenium‐bridged copper clusters can be formulated.