1,2,4-Diazaphospholide complexes of lanthanum(iii), cerium(iii), neodymium(iii), praseodymium(iii), and samarium(iii): synthesis, X-ray structural characterization, and magnetic susceptibility studies.
A few heteroleptic, charge-separated heterobimetallic, and polymeric alkali metalate complexes of 1,2,4-diazaphospholide lanthanum(iii), cerium(iii), neodymium(iii), praseodymium(iii), and samarium(iii) were simply prepared via the metathesis reaction of MCl3 (THF)m (m = 1-2) and K[3,5-R2dp] ([3,5-R2dp](-) = 3,5-di-substituent-1,2,4-diazaphospholide; R = tBu, Ph) in a varied ratio (1 : 3, 1 : 4, and 1 : 5, respectively) at room temperature in tetrahydrofuran. All the complexes were fully characterized by (1)H, (13)C{(1)H}, (31)P{(1)H}, IR, and X-ray single crystal diffraction analysis despite their paramagnetism (excluding La(iii) complexes). The structures of the complexes were found to feature varied coordination modes. The magnetic properties of several compounds were studied by magnetic susceptibility, and the complexes presented the magnetic moments close to or lower than the theoretical values for the free ions in the trivalent oxidation states (Pr(3+), Nd(3+)).
Institute of Organic Chemistry & College of Chemical and Materials Science, Shanxi Normal University, Gongyuan Street 1, Linfen, Shanxi Province 041004, China. wjzheng_sxnu@qq.com wjzheng@sxnu.edu.cn.
Minggang
M
Zhao
Institute of Organic Chemistry & College of Chemical and Materials Science, Shanxi Normal University, Gongyuan Street 1, Linfen, Shanxi Province 041004, China. wjzheng_sxnu@qq.com wjzheng@sxnu.edu.cn.
Lixia
L
Wang
Institute of Organic Chemistry & College of Chemical and Materials Science, Shanxi Normal University, Gongyuan Street 1, Linfen, Shanxi Province 041004, China. wjzheng_sxnu@qq.com wjzheng@sxnu.edu.cn.
Pangpang
P
Li
College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Shandong Province 250014, China.
Jianping
J
Ma
Institute of Organic Chemistry & College of Chemical and Materials Science, Shanxi Normal University, Gongyuan Street 1, Linfen, Shanxi Province 041004, China. wjzheng_sxnu@qq.com wjzheng@sxnu.edu.cn and Key Laboratory of Magnetic Molecules and Magnetic Information Material, Ministry of Education, Linfen, Shanxi Province 041004, China.
Wenjun
W
Zheng