摘要
The title complex was prepared from self-assembly reaction of La(NO3)3(6H2O, Zn(NO3)2(6H2O, m-cyanobenzoic acid (m-CNC6H4COOH) and pyridine (Py) in refluxing ethanol and its structure was determined by single-crystal X-ray diffraction. Crystallographic data: C94H62N12La2O22Zn2, Mr = 2120.12, triclinic space group P, a = 13.2219(5), b = 13.2713(5), c = 14.1987(6) ?, (???69.156(1), ( = 84.034(1), ( = 89.400(1) (, V = 2314.9(2) ?3, Z = 1, Dc = 1.521 g/cm3, F(000) = 1060, ( (MoK() = 14.94 cm-1, the final R = 0.043 and wR = 0.117 for 6381 unique reflections with I > 2((I). Crystal structure determination shows that the neighboring lanthanum(III) and zinc(II) ions are bridged by three bidentate m-cyanobenzonate ligands in the syn-syn fashion to form a pair of dinuclear [LaZn(m-CNC6H4COO)3(Py)(C2H5OH)] subunits, being linked together by two bidentate and two tridentate m-cyanobenzonate groups in the syn-syn and syn-anti modes, respectively, to construct a tetranuclear La-Zn complex [La2Zn2(m-CNC6H4COO)10(Py)2(C2H5OH)2].
The title complex was prepared from self-assembly reaction of La(NO3)3(6H_2O, Zn(NO3)2(6H_2O, m-cyanobenzoic acid (m-CNC6H4COOH) and pyridine (Py) in refluxing ethanol and its structure was determined by single-crystal X-ray diffraction. Crystallographic data: C94H62N12La2O22Zn2, Mr = 2120.12, triclinic space group P, a = 13.2219(5), b = 13.2713(5), c = 14.1987(6) ?, (???69.156(1), ( = 84.034(1), ( = 89.400(1) (, V = 2314.9(2) ?3, Z = 1, Dc = 1.521 g/cm3, F(000) = 1060, ( (MoK() = 14.94 cm-1, the final R = 0.043 and wR = 0.117 for 6381 unique reflections with I > 2((I). Crystal structure determination shows that the neighboring lanthanum(III) and zinc(II) ions are bridged by three bidentate m-cyanobenzonate ligands in the syn-syn fashion to form a pair of dinuclear [LaZn(m-CNC6H4COO)3(Py)(C2H5OH)] subunits, being linked together by two bidentate and two tridentate m-cyanobenzonate groups in the syn-syn and syn-anti modes, respectively, to construct a tetranuclear La-Zn complex [La2Zn2(m-CNC6H4COO)10(Py)2(C2H5OH)2].
基金
the Natural Science Foundation of China, Fujian Province and Chinese Academy of Sciences.