Hydrogen Bonded 3D Molecular Self Assembly Constructed from (Ni(nicotinamide)2(thiocyanate)2(H2O)2 Complex Showing Spin Canted Anti-ferromagnetic Character

摘要

A new three-dimensional nickel(Ⅱ) hydrogen-bonded molecular self assembly containing [(Ni(nicotinamide)2(thiocyanate)2(H2O)2] complex has been synthesized and characterized by single-crystal X-ray diffraction,FTIR spectroscopy,thermal analysis and magnetic measurements.Structural analysis reveals that the complex crystallizes in triclinic space group P1(crystal data a = 7.5574,b = 8.2683,c = 9.0056 ?,α = 73.010,β = 69.698,γ = 66.51) and exhibits a distorted octahedral coordination sphere.Most interesting point in its structure is the involvement of sulphur atom of thiocyanate moiety in the trifurcated hydrogen bonding to build up the hydrogen-bonded self assembly.The magnetic behavior as determined by squid magnetometer(2~300 K temp.range) reveals dominating antiferromagnetic interaction followed by spin canting behavior below 20 K.