摘要
在丁二酸和三乙胺存在下,高氯酸钴与2,5-双(4-吡啶基)-1,3,4-口恶二唑(4-bpo)反应生成配合物[Co(4-bpo)2(H2O)4](4-bpo)2(ClO4)2(H2O)6(1)的一种新晶型:单斜晶系,P2/n空间群,晶胞参数为a=1.909 2(2)nm,b=0.699 7(8)nm,c=2.271 1(3)nm,β=98.462(2)o,V=3.000 6(6)nm3,Z=2.配位单元中的八面体钴离子处于结晶学反演中心,配位原子分别来自于赤道平面上的4个水分子和2个轴向吡啶氮原子.晶格水分子、4-bpo和高氯酸根位于单核配位阳离子[Co(4-bpo)2(H2O)4]2+的周围,并通过多种O-H…O及O-H…N氢键作用连接形成新颖的主-客体包合结构,其中游离的阴离子处于所形成的二维氢键层内和层间的空隙中.
The reaction of 2,5-bis（4-pyridyl）-, 3,4-oxadiazole （4-bpo） with Co（ClO4 ）2 in the presence of succinic acid and triethylamine affords a new polymorph of [-Co（4- bpo）2 （ H2O） 4 ] （4-bpo） 2 （ClO4）2（ H2O） 6 （ 1 ）. It crystallizes in monoclinic system, space group P2/n with a=1. 909 2（2） nm, b=0. 699 7（8） nm, c=2. 271 1（3） nm, β=98. 462（2）°, V= 3. 000 6（6） nm3 ,Z= 2. In the discrete coordinated entity, the octahedral Co^Ⅱ is located at the inversion center, consisting of four equatorial water molecules and two axial pyridyl N donors from 4-bpo. The monomeric [-Co（4-bpo）2 （H2O）4]^2＋ cations are surrounded by the lattice water, 4-bpo and perchlorate, which are interlinked by multiple O-H…O and O-H…N interactions to show a novel host-guest inclusion with the counter anions lying within and between the 2-D hydrogen-bonded arrays.
出处
《天津师范大学学报（自然科学版）》
CAS
2006年第3期1-4,共4页
Journal of Tianjin Normal University：Natural Science Edition
基金
Financial support fromthe National Natural Science Foundation of China(20401012),the Key Project of Chinese Ministry of Education (Grant 205008)and Tianjin Normal University.
