Two Mn(II)/Co(II) Coordination Polymers Involving 4,4'-dipyridyltrisulfide/4,4'-dipyridylsulfide Obtained by In Situ Ligand Formation From 4,4'-dipyridyldisulfide

摘要

Two coordination polymers, [Mn(dpts)(5-Br-ip)]_n (1) and [Co_2(dps)2(5-Br-Hip)_4]_n (2) (dpts = 4,4'-dipyridyltrisulfide, dps = 4,4'-dipyridylsulfide, 5-Br-H_2ip = 5-Bromoisophthalate), have been hydrothermally synthesized by in situ generation of dps and dpts ligands from a 4,4'-dipyridyldisulfide (dpds) precursor in the presence of Mn(II) and Co(II) ions, respectively. Complex 1 belongs to the triclinic system, P-1 space group, a = 8.925(4) ?, b = 10.236(5) ?, c=12.184(6) ?, α =69.539?, β =84.699?, γ =77.991?. Complex 2 belongs to the hexagonal system, P6_522 space group, a= 16.6696(12) ?, b = 16.6696(12) ?, c = 36.999(5) ?, γ = 120?. Complex 1 presents a one-dimensional structure based on binuclear Mn(II) clusters. However, complex 2 displays a two-dimensional network containing the double helical chains.