Liu Jia-Lu, Cai Hai-Ting, Zhao Guo-Liang
College of Chemistry and Life Sciences and Xingzhi College, Zhejiang Normal University, Jinhua 321004, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2010 Sep 30;66(Pt 10):m1332-3. doi: 10.1107/S1600536810038109.
The asymmetric unit of title compound, [La(NO(3))(3)(C(15)H(15)NO(2))(2)(CH(3)OH)], consists of two Schiff base 2-meth-oxy-6-[(4-methyl-phen-yl)iminiometh-yl]phenolato (HL) ligands, three independent nitrate anions and one methanol mol-ecule coordinated to La(III). The coordination environment of the La(III) ion is formed by eleven O atoms. Three bidentate nitrate anions coordinate to the La(III) ion, while two HL ligands chelate the metal center with O atoms from the phenolate and meth-oxy groups. The HL ligands are zwitterionic, with protonated imine N atoms. The coordination sphere is completed by one methanol mol-ecule. The protonated imine N atoms are involved in intra-molecular N-H⋯O hydrogen bonds with the phen-oxy groups and nitrate ligands. One O atom of one nitrate group is disordered over two sites of equal occupancy.
标题化合物[La(NO₃)₃(C₁₅H₁₅NO₂)₂(CH₃OH)]的不对称单元由两个席夫碱2-甲氧基-6-[(4-甲基苯基)亚氨基甲基]苯酚根（HL）配体、三个独立的硝酸根阴离子和一个与La(III)配位的甲醇分子组成。La(III)离子的配位环境由11个O原子构成。三个双齿硝酸根阴离子与La(III)离子配位，而两个HL配体通过酚氧基团和甲氧基的O原子螯合金属中心。HL配体是两性离子型的，带有质子化的亚胺N原子。配位球由一个甲醇分子完成。质子化的亚胺N原子与酚氧基和硝酸根配体形成分子内N-H⋯O氢键。一个硝酸根基团的一个O原子在两个占有率相等的位置上无序分布。
