Synthesis and X-ray molecular structures of the silver(<scp>I</scp>) amides [{Ag[µ-N(SiMe<sub>3</sub>)<sub>2</sub>]}<sub>4</sub>] and [{Ag[µ-NCMe<sub>2</sub>(CH<sub>2</sub>)<sub>3</sub>CMe<sub>2</sub>]}<sub>4</sub>]
作者:Peter B. Hitchcock、Michael F. Lappert、Luc J.-M. Pierssens
DOI:10.1039/cc9960001189
日期:——
The thermally stable silver(I) amides [(Ag(mu-NR(2)))(4)] (R = SiMe(3)) 1 and [Ag(mu-NR'(2))}(4)] [NR'(2) = NCMe(2)(CH2)(3)CMe(2)] 2, prepared from AgNCO and Sn(NR(2))(2) or Sn(NR'(2))(2), or for 1 also from M(NR(2))(2) (M = Pb or Yb) or [Sn(mu-F)NR(2)}(2)], are centrosymmetric, tetranuclear clusters comprising a square of Ag atoms [mean Ag ... Ag 3.001(2) Angstrom for 1 and 2.995(2) Angstrom for 2] linked by singly bridging amido groups [mean Ag-N 2.148(5) Angstrom for 1 and ranging from 2.126(7) to 2.184(7) Angstrom for 2], the (AgN)(4) macrocycle being planar for 1 but puckered for 2, and the N-Ag-N' and Ag-N-Ag' arrangements being essentially linear and rectangular, respectively.