1D Metal-Pyrimidine chain with antiferromagnetic coupling and spin-canting behavior

Two isostructural compounds [M(hpmc)(phen)(H2O)] [M = Mn (1), Co (2); H2hpmc = 6-hydroxypyrimidine-4-carboxylic acid, phen = 1,10-phenanthroline] were synthesized by the in-situ hydrothermal reactions of 6-chloropyrimidine-4-carboxylic acid (Clpmc) with MnII and CoII ions, in which the metal centers are bridged by pyrimidine ring to form 1D chain. Magnetic studies indicate pyrimidine can transmit antiferromagnetic coupling and the CoII complex shows spin-canting behavior below 3.5 K.