TY - JOUR
T1 - Synthesis, spectra and crystal structure of bis(1,10-phenanthroline)di(μ-α-methylacrylato) lanthanide(III)dimers
AU - Lu, Wei Min
AU - Shao, Zong Ping
AU - Hu, Jing Bo
AU - Luo, Xiao Yang
AU - Dong, Nan
AU - Gu, Jian Ming
PY - 1996
Y1 - 1996
N2 - The homodinuclear complexes, [RE(CH2C(CH3)COO)3(phen)]2 (RE=La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Y, phen=1,10-phenanthroline), have been synthesized and characterized by elemental analysis, molar conductance, IR and NMR. The complex [La(CH2C(CH3) COO)3(phen)(HL)]2 (HL)=CH2C(CH3)COOH) crystallizes in the monoclimc space group P21/c with Z = 2. Cell dimensions are a = 9.878(2), b = 11.071(1), c = 26.528(3) Å, β = 94.02(1)° and the structure was refined to R = 0.036 for 4136 observed reflections. The structure consists of a centrosymmetric dinuclear molecule. Lanthanum(III) atoms are bridged by two bidentate and two terdentate carboxylato groups with an La...La separation of 4.0456(4) Å. Each lanthanum(III) atom is nine-coordinated and exhibits a slightly distorted, tricapped, trigonal prism. The La-O and La-N bond distances are in the range 2.473-2.738 and 2.696-2.722 Å, respectively.
AB - The homodinuclear complexes, [RE(CH2C(CH3)COO)3(phen)]2 (RE=La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Y, phen=1,10-phenanthroline), have been synthesized and characterized by elemental analysis, molar conductance, IR and NMR. The complex [La(CH2C(CH3) COO)3(phen)(HL)]2 (HL)=CH2C(CH3)COOH) crystallizes in the monoclimc space group P21/c with Z = 2. Cell dimensions are a = 9.878(2), b = 11.071(1), c = 26.528(3) Å, β = 94.02(1)° and the structure was refined to R = 0.036 for 4136 observed reflections. The structure consists of a centrosymmetric dinuclear molecule. Lanthanum(III) atoms are bridged by two bidentate and two terdentate carboxylato groups with an La...La separation of 4.0456(4) Å. Each lanthanum(III) atom is nine-coordinated and exhibits a slightly distorted, tricapped, trigonal prism. The La-O and La-N bond distances are in the range 2.473-2.738 and 2.696-2.722 Å, respectively.
KW - 1,10-phenanthroline
KW - Lanthanide
KW - X-ray structure
KW - α-methylacrylato
UR - http://www.scopus.com/inward/record.url?scp=0001369869&partnerID=8YFLogxK
U2 - 10.1080/00958979608022853
DO - 10.1080/00958979608022853
M3 - 文章
AN - SCOPUS:0001369869
SN - 0095-8972
VL - 40
SP - 145
EP - 155
JO - Journal of Coordination Chemistry
JF - Journal of Coordination Chemistry
IS - 1-2
ER -