Syntheses and crystal structures of binuclear gold(I), silver(I) and coper(I) complexes containing bulky pyridyl functionalised alkyl ligands

摘要

Treatment of (CO)AuCl,CuCl or AgNO_3 with 2-LiC(SiMe_3)_2-Py-6-CH_2R gives the binuclear metal compounds [M_2(#mu#-2-C(SiMe_3)_2-6-CH_2RPy)_2][R=H, M=Au (1), Cu(2) and Ag (3); R=Me_3Si, M=Cu (4)]. The dimeric structures of complexes 1,2 and 4 have been established by single-crystal X-ray diffraction studies. The complexes are centrosymmetric with each ligand bridging hte two metal centres which are in close proximity to each other [M...M 2.690(2) A in 1,2436(1) A in 2 and 2.431(1) A in 4].