Synthesis and molecular structure of novel zinc(<scp>II</scp>) complexes: [{Zn(HL)Cl<sub>2</sub>}<sub>n</sub>], [Zn<sub>2</sub>L<sub>2</sub>Cl<sub>2</sub>] and [Zn<sub>2</sub>(µ-OH)LCl<sub>2</sub>][HL = 4-methyl-2,6-bis(pyrazol-1-ylmethyl)phenol]
作者:Chun-Tong Chen、Wen-Kuen Chang、Shiann-Cherng Sheu、Gene-Hsiang Lee、Tong-Ing Ho、Yuan-Chuan Lin、Yu Wang
DOI:10.1039/dt9910001569
日期:——
The synthesis of a new bifunctional ligand, 4-methyl-2,6-bis(pyrazol-1-ylmethyl)phenol (HL), and the structures of its complexes with zinc(II) are described. The ligand reacts with zinc chloride to form a macromolecular complex, [Zn(HL)Cl2}n] 1. In basic solution two binuclear zinc(II) complexes, [Zn2L2Cl2] 2 and [Zn2(mu-OH)LCl2] 3, are formed under different reaction conditions. The molecular structures of complexes 1 and 2 have been characterized by X-ray diffraction: 1, monoclinic, space group = P2(1)/c, Z = 4, a = 12.357(2), b = 12.400(2), c = 14.957(4) angstrom, beta = 100.18(2)-degrees; 2, triclinic, space group = P1BAR, Z = 1, a = 9.194(1), b = 10.040(1), c = 10.316(2) angstrom, alpha = 114.40(2), beta = 115.93(2), gamma = 89.16(1)-degrees. The co-ordination sphere of zinc(II) in complex 1 is tetrahedral, in 2 it is distorted square pyramidal.