TWO NOVEL ZINC COORDINATION POLYMERS BASED ON BIS(1,2,4-TRIAZOLE-1-YL)ETHANE AND BENZENEDICARBOXYL

摘要

Two novel zinc complexes [Zn_2(bte)_2(phth)_2](H2O)4 (1) and [Zn(bte)(terph)](H_2O)_2 (2) (phth= 1,2-benzenedi-carboxyl, terph = 1,4-benzenedicarboxyl, bte = bis(l,2,4-triazole-l-yl)ethane) were synthesized and characterized and their crystal structures were determined by X-ray diffraction analysis. Complex 1 crystallizes in the orthorhombic space group Pnalj, with a-11.0742(10), 6=14.4132(13), c = 22.4188(18)A, K= 3578.4(5)A~3, Z = 4: R_1 =0.0495, wR_2 = 0.l026. Complex 2 crystallizes in the tridinic space group P_1, with a = 9.468(6), b = 9.682(5), c= 10.410(6)A, alpha = 101.533(8), beta= 104.783(9), gamma= 92.042(5) deg F=900.3(9)A~3, Z = 2; R_1 =0.0520. Wr_2 = 0.1193. A two-dimensional (2D) network in 1 is formed through helical chains linking Zn_2(phth)_2 14-membered rings forming 50-membered macrometallacydic rings. The 2D rhombic network in 2 is formed through bridging terph ligands linking Zn2(bte)_2 18-membered rings.