Synthesis,Crystal Structure and Thermal Stability Property of Mononuclear Containing N-donor Ligand Cobalt(II) Complex [Co(py)_3(H_2O)_3](1,5-nds)

The title complex [Co(py)3(H2O)3](1,5-nds)(py=pyridine,1,5-nds=1,5-naphthalenedisulfonate anion) was synthesized in deionized water and characterized by IR,X-ray single crystal diffraction and thermal analysis methods.The results of X-ray single crystal diffraction shows that the crystal of the title complex crystallized in monoclinic system with space group C2/c.The unit cell parameters include a=1.5912(3) nm,b=1.2206(2) nm,c=1.4855(3) nm,α=90°,β=98.18(3)°,γ=90°,V=2.8558(10) nm3,Z=4.Each of the cobalt ion coordinates with three pyridines and three water molecules.1,5-naphthalenedisulfonate anions play the role of charge-balancing.