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摘要
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.
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