Department of Chemistry, North-Eastern Hill University, Shillong - 793022, Meghalaya, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2012 Oct;96:854-61. doi: 10.1016/j.saa.2012.07.113. Epub 2012 Aug 3.
Copper (II) complexes [Cu(3)(nph)(μ(2)-X)(2)(H(2)O)(6)]·2H(2)O [X=Cl (1), (ClO(4)) (3)] and [Cu(3)(nph)(NO(3))(2)(H(2)O)(6)] (2) have been synthesized from bis(2-hydroxy-1-naphthaldehyde)oxaloyldihydrazone in methanol medium and characterized. The structures of the complexes have been discussed in the light of data obtained from analytical, thermoanalytical, mass spectral studies, molar conductance, magnetic moment, electronic, EPR, IR, FT-IR spectroscopic studies. The molar conductance values for the complexes fall in the region 0.5-0.9 Sm(2) mol(-1) in DMSO solution indicating that all of them are non-electrolyte. The magnetic moment values for the complexes suggest weak M-M interaction in the structural unit of the complexes. The dihydrazone ligand is present in enol form in all of the complexes. Copper centre has tetragonally distorted octahedral stereochemistry in chlorido and perchlorato complexes while in nitrato complex, copper has mixed square-pyramidal and distorted-octahedral stereochemistry. The EPR parameters of the complexes indicate that the copper centre has the doublet state as the ground state.
铜（II）配合物[Cu(3)(nph)(μ(2)-X)(2)(H(2)O)(6)]·2H(2)O [X=Cl(1)，(ClO(4))(3)]和[Cu(3)(nph)(NO(3))(2)(H(2)O)(6)]（2）已从甲醇介质中的双（2-羟基-1-萘醛）草酰二腙合成并进行了表征。根据分析、热分析、质谱研究、摩尔电导率、磁矩、电子、EPR、IR、FT-IR 光谱研究的数据，讨论了配合物的结构。配合物的摩尔电导率值在 DMSO 溶液中落在 0.5-0.9 Sm(2) mol(-1) 区域内，表明它们都是非电解质。配合物的磁矩值表明在配合物的结构单元中存在弱的 M-M 相互作用。所有配合物中的二腙配体均以烯醇形式存在。在氯代和高氯代配合物中，铜中心具有四方畸变八面体立体化学，而在硝配合物中，铜具有混合的四方锥和畸变八面体立体化学。配合物的 EPR 参数表明铜中心具有作为基态的双重态。
