Preparation, Characterization, and X-ray Crystal Structures of Helical and Syndiotactic Zinc-Based Coordination Polymers
作者:William W. Ellis、Marion Schmitz、Atta A. Arif、Peter J. Stang
DOI:10.1021/ic991315m
日期:2000.6.1
helical structure in the solid state [monoclinic space group P2(1)/n; a = 11.0374(3) A, b = 24.2179(10) A, c = 14.3970(4) A, beta = 92.880(2) degrees; Z = 4]. The latter polymer, ((facac)2Zn.2)n, adopts a syndiotactic structure in the solid state [monoclinic space group P2(1)/n; a = 9.1344(1) A, b = 21.7985(5) A, c = 16.0322(4) A, beta = 99.6680(11) degrees; Z = 4]. The solution structures of the corresponding
(facac)2Zn.2H2O(facac = 1,1,1,5,5,5-六氟乙酰丙酮)与2,5-双(4-乙炔基吡啶基)呋喃(1)和1,2-双(4-乙炔基吡啶基)苯(2)结晶后生成配位聚合物。前一种聚合物((facac)2Zn.1)n在固态下具有等规螺旋结构[单斜空间群P2(1)/ n; a = 11.0374(3)A,b = 24.2179(10)A,c = 14.3970(4)A,β= 92.880(2)度;Z = 4]。后者的聚合物((facac)2Zn.2)n在固态时为间同结构[单斜空间群P2(1)/ n; a = 9.1344(1)A,b = 21.7985(5)A,c = 16.0322(4)A,beta = 99.6680(11)度; Z = 4]。相应的低聚物的溶液结构已通过低温1H和19F NMR光谱进行了研究。使用片段[(+)-tfc] 2 Zn((+)-tfc = 3-