Syntheses, structures and vibrational spectroscopy of some unusual silver(I) (pseudo-) halide/unidentate nitrogen base polymers

摘要

The meagre (structurally defined) array of 1:2 silver(I) (pseudo-)halide:unidentate nitrogen base adducts is augmented by the single-crystal X-ray structural characterization of the 1:2 silver(I) thiocyanate:piperidine ('pip') adduct. It is of the one-dimensional,castellated polymer' type previously recorded for the chloride: Ag-...(pip)(2)(mu-SCN)Ag(pip)(2)(...) a single bridging atom (S) linking successive silver atoms. By contrast, in its copper(l) counterpart, also a one-dimensional polymer, the thiocyanate bridges as end-bound SN-ambidentate: (CuSCNCuSCN...)-Cu-... A study of the 1:1 silver(I) bromide: quinoline ('quin') adduct is recorded, as the 0.25 quin solvate, isomorphous with its previous reported 'saddle polymer' chloride counterpart.