期刊
INORGANIC CHEMISTRY
卷 48, 期 7, 页码 3104-3113出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic802390c
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资金
- U.S. Department of Energy (DOE), Chemical Sciences, Geo-sciences and Biosciences Office, Office of Basic Energy Sciences [DE-FG02-03ER15419]
- U.S. Department of Energy (DOE) [DE-FG02-03ER15419] Funding Source: U.S. Department of Energy (DOE)
Phosphinoyl Grignard-based substitutions on 2,6-bis(chloromethyl)pyridine followed by N-oxidation of the intermediate 2,6-bis(phosphinoyl)methylpyridine compounds with mCPBA give the target trifunctional ligands 2,6-bis[bis(2-trifluoromethylphenyl)phosphinoylmethyl]pyridine 1-oxide (2a) and 2,6-bis[bis(3,5-bis(trifluoromethyl)phenyl)phosphinoylmethyl]pyridine 1-oxide (2b) in high yields. The ligands have been spectroscopically characterized, the molecular structures confirmed by single crystal X-ray diffraction methods, and the coordination chemistry surveyed with lanthanide nitrates. Single crystal X-ray diffraction analyses are described for the coordination complexes Nd(2a)(NO3)(3), Nd(2a)(NO3)(3)center dot(CH3CN)(0.5), Eu(2a)(NO3)(3), and Nd(2b)(NO3)(3)center dot(H2O)(1.25); in each case the ligand binds in a tridentate mode to the Ln(III) cation. These structures are compared with the structures found for lanthanide coordination complexes of the parent NOPOPO ligand, [Ph2P(O)CH2](2)C5H3NO.
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