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Synthesis and Crystal Structures of the Ligand‐Stabilized Silver Chalcogenide Clusters [Ag 154 Se 77 (dppxy) 18 ], [Ag 320 (S t Bu) 60 S 130 (dppp) 12 ], [Ag 352 S 128 (S t C 5 H 11 ) 96 ], and [Ag 490 S 188 (S t C 5 H 11 ) 114 ]
Author(s) -
Anson Christopher E.,
Eichhöfer Andreas,
Issac Ibrahim,
Fenske Dieter,
Fuhr Olaf,
Sevillano Paloma,
Persau Claudia,
Stalke Dietmar,
Zhang Jiatao
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200704249
Subject(s) - chalcogenide , crystallography , denticity , cluster (spacecraft) , metal , ligand (biochemistry) , chemistry , molecule , crystal structure , organic chemistry , biochemistry , receptor , computer science , programming language
The reaction of silver thiolates with Se(SiMe 3 ) 2 or S(SiMe 3 ) 2 in the presence of bidentate phosphanes leads to the formation of very large cluster molecules with distorted spherical metal–chalcogenide cores with diameters of 2–4 nm. The surfaces of these cores are protected by thiolate and phosphane ligands. Structural analyses show a higher degree of disorder with increasing number of Ag atoms. The compound with the highest silver content (see figure) has an idealized formulation [Ag 490 S 188 (S t C 5 H 11 ) 114 ].