1075690-32-2

Basic information

• Product Name: [AgCu((SC=(2,7-di-tert-butylfluoren-9-ylidene))2S)(PCy₃)2]
• CAS NO: 1075690-32-2
• Molecular Weight: 1405.34
• Mol File: 1075690-32-2.mol

Chemical Properties

• CAS DataBase Reference: [AgCu((SC=(2,7-di-tert-butylfluoren-9-ylidene))2S)(PCy₃)2](CAS DataBase Reference)
• NIST Chemistry Reference: [AgCu((SC=(2,7-di-tert-butylfluoren-9-ylidene))2S)(PCy₃)2](1075690-32-2)
• EPA Substance Registry System: [AgCu((SC=(2,7-di-tert-butylfluoren-9-ylidene))2S)(PCy₃)2](1075690-32-2)

Safety Data

• Hazardous Substances Data: 1075690-32-2(Hazardous Substances Data)

Upstream product

• 890525-72-1 [Pr₄N][Cu(S₂C=(2,7-di-tert-butylfluoren-9-ylidene))2] 
• 2622-14-2 tricyclohexylphosphine 

Downstream Products

• 890525-63-0 [Cu₂((SC=(2,7-di-tert-butylfluoren-9-ylidene))2S)(PCy₃)2] 

Relevant articles and documents

Dinuclear copper(I) and copper(I)/silver(I) complexes with condensed dithiolato ligands

The Cu(III) complex Pr4N[Cu{S2C=(t-Bu-fy)} 2] (1) (t-Bu-fy = 2,7-di-tert-butylfluoren-9-ylidene) reacts with [Cu-(PR3)4]ClO4 in 1:1 molar ratio in MeCN to give the dinuclear complexes [Cu2{[SC=(t-Bu-fy)]2S} (PR3)n] [n = 2, R = Ph (2a); n = 3, R = To (3b); To = p-tolyl]. The analogue of 2a with R = To (2b) can be obtained from the reaction of 3b with 1/8 equiv of S8. Compound 2b establishes a thioketene-exchange equilibrium in solution leading to the formation of [Cu 4{S2C=(t-Bu-fy)}2(PTo3) 4] (4b) and [Cu2{[SC=(t-Bu-fy)]3S}(PTo 3)2] (5b). Solid mixtures of 4b and 5b in varying proportions can be obtained when the precipitation of 2b is attempted using MeCN. The reactions of 1 with AgClO4 and PPh3, PTo 3 or PCy3 in 1:1:4 molar ratio in MeCN afford the heterodinuclear complexes [AgCu{[SC=(t-Bu-fy)]2S}(PR 3)3] [R = Ph (6a), To (6b), Cy (6c)]. Complex 6c dissociates PCy3 in solution to give the bis(phosphine) derivative [AgCu{[SC=(t-Bu-fy)]2S}(PCy3)2] (7c), which undergoes the exchange of [M(PCy3)]+ units in CD 2Cl2 solution to give small amounts of [Cu 2{[SC=(t-Bu-fy)]2S}(PCy3)2] (2c) and [Ag2{[SC=(t-Bu-fy)]2S}(PCy3)2] (8c). Complexes 6a and b participate in a series of successive equilibria in solution, involving the dissociation of phosphine ligands and the exchange of [M(PCy3)]+ units to give 2a or 3b and the corresponding disilver derivatives [Ag2{[SC=(t-Bu-fy)]2S}(PR 3)2] [R = Ph (8a), To (8b)], followed by thioketene-exchange reactions to give [AgCu{[SC=(t-Bu-fy)]3S](PR 3)2}[R = Ph (9a), To (9b)]. Complexes 9a and b can be directly prepared from the reactions of 1 with AgClO4 and PPh 3 or PTo3 in 1:1:3 molar ratio in THF. The crystal structures of 3b, 6b, 6c, 7c, and 9a have been solved by single-crystal X-ray diffraction studies and, in the cases of 7c and 9a, reveal the formation of short Ag...Cu metallophilic contacts of 2.8157(4) and 2.9606(6) A, respectively.