Supramolecular assemblies of germanium(<scp>ii</scp>) halides with O-, S- and Se-donor macrocycles – the effects of donor atom type upon structure
作者:Andrew L. Hector、William Levason、Gillian Reid、Michael Webster、Wenjian Zhang
DOI:10.1039/c0dt00749h
日期:——
the neutral [GeCl2([18]aneS6)] which forms a supramolecular sheet network involving exocyclic coordination, with the macrocycles bridging Ge atoms which are in a pseudo-trigonal bipyramidal environment from two Cl and two S atoms (saw-horse), with one lone pair assumed to occupy the remaining equatorial void. Conversely, using the mixed S/O macrocycles [18]aneS3O3 (1,4,7-trithia-10,13,16-trioxacyclooctadecane)
[GeCl 2(二恶烷)]与[18] aneS 6(1,4,7,10,13,16-六硫代环十八烷)形成中性[GeCl 2([18] aneS 6)],形成涉及外环配位的超分子片状网络,其中大环桥连接Ge原子,Ge原子位于由两个Cl和两个S原子组成的伪三角双锥体环境中(锯齿形)马),其中一对孤独者将占据剩余的赤道空白。相反,使用混合的S / O大环[18] aneS 3 O 3(1,4,7-trithia-10,13,16-三氧环环十八烷)和[15] aneS 2 O 3(1,4-二硫-7,10,13-三氧杂环戊烷)(L)导致单阳离子五角锥型[GeCl(L)] +,其结构显示出环内Ge配位和一个Cl的位移。这两个配合物中的Ge–S和Ge–O键长惊人地不同,前者的配位Cl是轴向的,而后者则占据五边形平面(S原子的轴向)。环状硒醚与卤化Ge(II)形成一维或二维超分子组装体,包括[GeCl 2([8]