Unexpected formation of novel organometallic hetero-cation crystals with a rare coordination mode.
The imitative synthesis of the ionic liquid [bmim][Co(CO)(4)], carried out in organic solvents instead of water, produced an unexpected liquid complex with partial crystallization. The resulting solid was confirmed to be the novel hetero-cation salt, [bmim]K[Co(CO)(4)](2) () and a crystallographic investigation revealed an extremely unusual (CO)(7)-K coordination mode. When the organic cation was replaced by [C(4)Py](+), similar crystallization was also obtained, forming [C(4)Py]K[Co(CO)(4)](2) (), which has an analogous structure. Both of these cases indicate an interesting influence that these organic cations have on the crystallization of organometallic structures that yields new structural examples.
Deng
Fan-Guo
FG
State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
Hu
Bin
B
Sun
Wei
W
Xia
Chun-Gu
CG