Synthesis and Structure of a Novel Cage-like Rare Earth Complex [La2(TCM)2(DMF)6]·2DMF

Abstract

Abstract: A new tripod polyaromatic acid ligand H₃TCM(H₃TCM=2,4,6-tris₁,3,5-trimethylbenzene) and its binuclear rare earth complex ·2DMF were prepared and the structure of complex was characterized by single crystal X-ray diffraction. The complex crystallizes in triclinic crystal system, space group P1 with a=1.123 3(2) nm, b=1.374 1(2) nm, (c=)1.731 8(2) nm, α=78.19(1)°, β=80.02(1)°, γ=80.08(1)°, V=2.550 8(7) nm³, Z=1, (R=)0.035 8, wR=0.080 3. Two TCM ligands that are both in cis, cis, cis-conformations adopt face-to-face orientation and are joined together by two La³⁺ to a novel binuclear cage-like structure. Two DMF molecules are encapsulated in this cage by coordination. In addition, the other two free DMF molecules are embedded in the channels from the packing of these units along a and b axises.

Key words: Polyaromatic acid, Binuclear cage-like structure, Rare earth, Crystal structure

CLC Number:

O614.33⁺1

TrendMD:

CAI Zheng-Hong, TANG Jing, TANG Yu, TAN Min-Yu, YU Kai-Bei. Synthesis and Structure of a Novel Cage-like Rare Earth Complex [La₂(TCM)₂(DMF)₆]·2DMF[J]. Chem. J. Chinese Universities, 2005, 26(6): 1021.

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Synthesis and Structure of a Novel Cage-like Rare Earth Complex [La₂(TCM)₂(DMF)₆]·2DMF

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