|
|||||
|
|
Extending framework based on the linear coordination polymers: Alternative chains containing lanthanum ion and acrylic acid ligand |
|
| Authors: | Hui Li Ming Guo Fei-Yue He Shie-Ming Peng |
| Affiliation: | a Department of Chemistry, Beijing Institute of Technology, Beijing 100081, PR China b Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, ROC c Institute of Chemistry, Academia Sinica, Taipei, Taiwan 115, ROC |
| Abstract: | One-dimensional alternative chains of two lanthanum complexes: [La(L1)3(CH3OH)(H2O)2]·5H2O (L1=anion of α-cyano-4-hydroxycinnamic acid ) 1 and [La(L2)3(H2O)2]·3H2O (L2=anion of trans-3-(4-methyl-benzoyl)-acrylic acid) 2 were synthesized and structurally characterized by single-crystal X-ray diffraction, element analysis, IR and thermogravimetric analysis. The crystal structure data are as follows for 1: C31H36LaN3O17, triclinic, P-1,  ,  ,  , α=72.7960(10)°, β=83.3820(10)°, γ=67.1650(10)º, Z=2, R1=0.0377, wR2=0.0746; for 2: C33H37LaO14, triclinic, P-1,  ,  ,  , α=81.145(2)°, β=87.591(2)°, γ=67.345(5)°, Z=2, R1=0.0869, wR2=0.220. 1 is a rare example of the alternative chain constructed by syn-syn and anti-syn coordination mode of carboxylato ligand arranged along the chain alternatively. La(III) ions in 2 are linked by two η3-O bridges and four bridges (two η2-O and two η3-O) alternatively. Both of the linear coordination polymers grow into two- and three-dimensional networks by packing through extending hydrogen-bond network directed by ligands. |
| Keywords: | Lanthanum complex Hydrogen bonding network Alternative chain Acrylic acid |
| 本文献已被 ScienceDirect 等数据库收录！ | |