Self-assembly of a mixed-ligand silver-based coordination polymer

The novel title silver(I) coordination polymer, catena‐poly­[[aceto­nitrile­silver(I)]‐di‐μ‐4‐[N‐(di­phenyl­phosphino)­amino­meth­yl]­pyridine‐κ2N1:P;κ2P:N1‐[aceto­nitrile­silver(I)]‐μ3‐4‐[N,N‐bis­(di­phenyl­phosphino)­amino­methyl]­pyridine‐κ3N1:P:P′‐bis­[aceto­nitrile­silver(I)(Ag—Ag)]‐μ3‐4‐[N,N‐bis­(di­phenyl­phosphino)­amino­methyl]­pyridine‐κ3P:P′:N1] tetra­kis­(tetra­fluoro­borate) aceto­nitrile trisolvate], {[Ag4(C2H3N)4(C18H17N2P)2(C30H26N2P2)2](BF4)4·3C2H3N}n, is formed by the self‐assembly of the Ph2P(4‐NHCH2C5H4N) and (Ph2P)2(4‐NCH2C5H4N) ligands with silver tetra­fluoro­borate. The polymer consists of alternating rings (which lie about inversion centers) bridged by the pyridyl rings of the bis‐phosphine‐substituted ligands, with anions hydrogen bonded the length of the chain. Two distinctly different metal coordination environments exist in the polymer, viz. distorted tetrahedral and trigonal geometries.