Crystal structures of (η4-cycloocta-1,5-diene)bis-(1,3-dimethylimidazol-2-ylidene)iridium(I) iodide and (η4-cycloocta-1,5-diene)bis(1,3-diethyl-imidazol-2-ylidene)iridium(I) iodide

被引:2
作者
Bernier, Chad M. [1 ]
DuChane, Christine M. [1 ]
Merola, Joseph S. [1 ]
机构
[1] Virginia Tech, Dept Chem, Blacksburg, VA 24061 USA
来源
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS | 2020年 / 76卷
基金
美国国家科学基金会;
关键词
crystal structure; N-heterocyclic carbene; iridium; IRIDIUM COMPLEXES; RHODIUM; REACTIVITY; LIGANDS;
D O I
10.1107/S2056989020004235
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
The title complexes, (eta(4) -cycloocta-1,5-diene)bis(1,3-dimethylimidazol-2-yl-idene)iridium(I) iodide, [Ir(C5H8N2)(2)(C8H12)]I, (1) and (eta(4)-cycloocta-1,5-diene)bis(1,3-diethylimidazol-2-ylidene)iridium(I) iodide, [Ir(C7H12N2)(2)(C8H12)]I, (2), were prepared using a modified literature method. After carrying out the oxidative addition of the amino acid l-proline to [Ir(COD)(IMe)(2)]I in water and slowly cooling the reaction to room temperature, a suitable crystal of 1 was obtained and analyzed by single-crystal X-ray diffraction at 100 K. Although this crystal structure has previously been reported in the Pbam space group, it was highly disordered and precise atomic coordinates were not calculated. A single crystal of 2 was also obtained by heating the complex in water and letting it slowly cool to room temperature. Complex 1 was found to crystallize in the monoclinic space group C2/m, while 2 crystallizes in the orthorhombic space group Pccn, both with Z = 4.
引用
收藏
页码:611 / +
页数:12
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