Hydrothermal Synthesis,Crystal Structure and Luminescence of Ni-Tb Complex Based on 5-(Isonicotinamido)isophthalate

A 3d-4f coordination polymer {[NiTb2(INAIP)4(H2O)6]·8H2O}n(1) was obtained by hydrothermal assembly of NiSO4·6H2O and Tb(NO3)3·6H2O with the H2INAIP ligand.Complex 1 crystallizes in triclinic,space group P1 with a=1.009 72(5) nm,b=1.083 43(5) nm,c=2.983 63(14) nm,V=3.209 3(3) nm3,Z=2,C56H60NiTb2N8O34,Mr=1765.67,Dc=1.827 g·cm-3,μ=2.575 mm-1,F(000)=1 764,Rint=0.031 5,R=0.052 5,wR=0.131 8.Single-crystal X-ray diffraction analysis reveals that each INAIP2-ligand uses its two carboxyl groups to connect two/three Tb(Ⅲ) centers,and the Ni(Ⅱ) only bonds to one pyridyl group and terminal water molecules,forming a two-dimensional(2D) bilayer.On the other hand,the 2D layers are further connected by hydrogen bonding interactions to give a three-dimensional(3D) supramolecular structure.The complex 1 at room temperature shows typical green photoluminescence of rare earth Tb3+ ion.CCDC: 853173.