CRYSTAL STRUCTURES AND CHARACTERIZATION OF TWO ONE–DIMENSIONAL COORDINATION POLYMERS CONTAINING Ln3+ IONS AND ANTHRANILATE (C7H6NO2)– ANIONS
S. Hussain1, I.U. Khan1, W.T.A. Harrison2, M.N. Tahir3, S. Ahmad4
1Government College University, Lahore, 54000, Pakistan
sajjaduet07@yahoo.com
2University of Aberdeen, Aberdeen AB24 3UE, Scotland
3University of Sargodha, Sargodha, Pakistan
4University of Engineering and Technology, Lahore, Pakistan
Ключевые слова: cerium, praseodymium, anthranilate anion, synthesis, crystal structure, one dimensional coordination polymer
Страницы: 133-140
Подраздел: КРИСТАЛЛОХИМИЯ
Аннотация
The syntheses, crystal structures and characterization (IR, TGA/DSC) of the isostructural one-dimensional coordination polymers [Ce(C 7H 6NO 2) 3] n ( 1) and [Pr(C 7H 6NO 2) 3] n ( 2) are described. The metal ions adopt distorted capped square anti-prismatic MO 9 coordination geometries. The anthranilate ligands bridge the metal ions in bridging-bidentate (O, μ 2-O') mode to generate [010] chains in the crystal and each ligand features an intramolecular N-H⋯O hydrogen bond. It is notable that two very similar, but crystallographically distinct chains appear in the unit cell. Crystal data: 1, C 21H 18CeN 3O 6, M r = 548.51, monoclinic, P2 1/ c (No. 14), a = 25.0476(10) Å, b = 7.4924(2) Å, c = 24.6366(7) Å, β = 119.424(1)°, V = 4027.1(2) Å 3, R( F) = 0.037, wR( F 2) = 0.068. 2, C 21H 18N 3O 6Pr, M r = 549.29, monoclinic, P2 1/ c (No. 14), a = 25.0077(13) Å, b = 7.4497(3) Å, c = 24.6063(12) Å, β = 119.392(2)°, V = 3994.1(3) Å 3, R( F) = 0.031, wR( F 2) = 0.068.
DOI: 10.1134/S0022476615010187 |
