Synthesis, structure, and fluorescence properties of two metal-organic complexes based on a tripodal carboxamide-containing ligand:

Two novel Zn(II)complexes based on a tripodal carboxamide-containing ligand,[Zn1.5II(LL-2)(ONO2)(OH2)3](NO3)2and[Zn3II(LL-2)2(OH)(OH2)3](ClO4)5x4EtOHx3H2O(where LL-2 =N ',N ",N "'-tris(pyrid-2-ylmethyl)-1,3,5-benzenetricarboxamide) are synthesized and structurally characterized. The first complex is a zero-dimensional structure which was further connected into a three-dimensional structure via hydrogen bond interactions, while the second complex features a one-dimensional tube-like structure, where the structural diversities were mainly caused by the different anions. The solid-state luminescent properties of the complexes were investigated and powder X-ray diffraction and thermal gravimetric analysis were performed.