Novel manganese(II) and cobalt(II) 3D polymers with mixed cyanate and carboxylate bridges: crystal structure and magnetic properties
作者:Yan-Qin Wang、Kun Wang、Qian Sun、Hua Tian、En-Qing Gao、You Song
DOI:10.1039/b914592c
日期:——
syn-syn carboxylatebridges to give an anionic chain of [M(mu-NCO)(mu-COO)(2)](n), and each chain is interlinked to four other chains by the cationic 1-methylpyridinium spacers to generate a 3D structure with the 4(2). 6(3). 8 net topology. They are the first compounds with mixed cyanate and carboxylatebridges. Magnetic studies reveal that the 3-fold mixed bridge propagates antiferromagnetic coupling
topological networks pillared by nitrate anions. Complexes 3 and 4 are both made up of 1D chains. 3 is composed of homo-chiral 21 helices, which provides a chiral 2D polymericnetwork, whereas 4 consists of two types of infinite 1D chains linked in a cross-like fashion, which displays a 3D plywood-like structure. Complex 5 consists of 4-connected metal nodes, which exhibits a 3-fold interpenetrating 3D diamondoid