Bis(3-cyano-pentane-2,4-dionato) Co(II) as a linear building block for coordination polymers: combinations with two polypyridines
作者:Jun Yoshida、Shin-ichi Nishikiori、Hidetaka Yuge
DOI:10.1080/00958972.2013.800865
日期:2013.6.1
Two types of bis(beta-diketonato) Co(II) complexes, [Co(CNacac)(2)] (CNacac=3-cyano-pentane-2,4-dionato), and [Co(dbm)(2)] (dbm=dibenzoylmethanato or 1,3-diphenyl-propane-1,3-dionato) were examined as linear building blocks for the construction of coordination polymers in combination with two oligopyridines, 1,4-bis(4,2':6',4 ''-terpyridin-4'-yl)benzene (L1) and 1,3-bis(3,2':6',3 ''-terpyridin-4'-yl)benzene) (L2). From combinations of [Co(CNacac)(2)] with L1 and L2, 2-D coordination polymers, [Co(CNacac)(2)](2)(L1)center dot(CHCl3)center dot(CH3OH) (CoCN-1) and [Co(CNacac)(2)](L2)(1/2)center dot(tetrachloroethane)(3/2) (CoCN-2), are obtained. Both CoCN-1 and CoCN-2 have 2D (4,4) net structures, in which L1 and L2 are tetradentate. In contrast, combination of [Co(dbm)(2)] with L2 affords a 1-D coordination polymer, [Co(dbm)(2)](L2)center dot 4(CH3OH) (Codbm-1), in which L2 is bidentate. L2 as a tetradentate ligand was inhibited by bulky phenyl rings in [Co(dbm)(2)]. These results indicate that [Co(CNacac)(2)] with a relatively simplified structure is useful as a linear building block in combinations with bulky oligopyridines.