Z状顺磁性化合物[{Cu(bipy)[C6H4(COO)2]}2·H2O]n和[Cu(phen)[C6H4(COO)2]]n的分子振动光谱研究

用分子振动光谱对已合成的具有顺磁性的化合物 {Cu(bipy) C6H4(COO) 2 ]} 2 ·H2 O]n(Ⅰ )和 Cu( phen) C6H4(COO) 2 ]]n(Ⅱ )进行深入研究 ,推测它们的结构 ,并将得到的结果与X射线晶体衍射测定的结构进行比较。文章对化合物的红外、拉曼光谱进行归属 ,还讨论了分子振动光谱与结构的关系

Study on the Spectroscopy of Paramagnetic Compounds [{Cu(bipy) [C6H4(COO)2]}2·H2O]n and [Cu(phen)[C6H4(COO)2]]n

The cluster compounds with d9-d9 magnetic system were investigated because of their magnetic character. Some of the copper(II) compounds with terephthalato as bridged unit, {Cu(bipy) C6H4(COO)2]}2.H2O]n and Cu(phen) C6H4(COO)2]]n, have been synthesized through a solvothermal reaction, and their crystal structures have been determined by X-ray diffraction. Their shape looks like zigzag-chain. In this paper, the molecular vibration spectra of the title complexes have been studied in detail. The middle and far-infrared spectra, and Raman spectra of the compounds have been reported and their assignments have been made experientially. The characteristic carbonyl absorption of terephthalato group at 1688 cm(-1) disappeared while the complexes formed. The characteristic peaks of COO- group were splited into two peaks respectively that appeared at 1603, 1574 cm(-1) (vasCOO) and 1369, 1356 cm(-1) (vsCOO) in {Cu(bipy)C6H4(COO)2]}2.H2O]n, and at 1614, 1605 cm(-1) (vasCOO) and 1373, 1344 cm(-1) (vsCOO) in Cu(phen) C6H4(COO)2]]n. The relationship between the structures of the compounds and the spectra has been discussed as well. The coincidence between experiential assignments and the theoretic calculation will be confirmed.