期刊
POLYHEDRON
卷 28, 期 8, 页码 1447-1454出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2009.03.006
关键词
Copper complex; Tris(pyrazolyl)borate; Coordination chemistry; Crystal structure; Nitrogen ligand
资金
- JSPS [17350043]
- MEXT [19020011]
- Grants-in-Aid for Scientific Research [19020011, 17350043] Funding Source: KAKEN
Copper(I) coordination complexes of the anionic fluorinated ligand, hydrotris(3-trifluoromethyl-5-methyl-1-pyrazolyl) borate (L0f(-)), i.e. the copper(I) carbonyl complex, [Cu(I)(L0f)(CO)] (1), the copper(I) triphenylphosphine complex, [Cu(I)(L0f)(PPh(3))] (2), the copper(I) acetonitrile complex, [Cu(I)(L0f)(NCMe)] (3), and the corresponding copper(I) triphenylphosphine complex with hydrotris(3,5-diisopropyl-1-pyrazolyl)borate anion (L1(-)), i.e. [Cu(I)(L1)(PPh(3))] (4), were synthesized in order to investigate the influence of the electron-withdrawing groups on the pyrazolyl rings. The structures of complexes 1, 2, and 4 were determined by X-ray crystallography. While X-ray crystallography did not show definitive trends in terms of copper(I) atom geometry, the clear influence of the electronic structure of the pyrazolyl rings is observed by spectroscopic techniques, namely, IR and multinuclear NMR spectroscopy. Finally, the relative stability of the copper(I) complexes is discussed. (C) 2009 Elsevier Ltd. All rights reserved.
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