Synthesis and Property of Tungsten Carbonyl Derivatives Based on 1H-(Pyrazol-1-ylmethyl)-1,2,3-benzotriazoles

【摘要】：Three complexes,(PBT)W(CO)5(1),(3,5-Me2PBT)W(CO)5(2) and(3,5-Pri2PBT)W(CO)5(3)(PBT=1H-(pyrazol-1-ylmethyl)-1,2,3-benzotriazole),were synthesized,and two of them were structurally characterized by X-ray crystallography.Complex 1 crystallizes in monoclinic with space group P21/c,a=1.0828(2),b=2.1655(4),c=0.6982(1) nm,β=93.39(3)o,V=1.6343(6) nm3,Z=4,Dc=2.126 g/cm3,F(000)=992,μ=7.107 mm-1,S=0.990,the final R=0.0301 and w R=0.0685.Complex 2 crystallizes in triclinic with space group P1,a=0.95021(8),b=0.98391(6),c=1.1433(1) nm,α=68.792(7),β=77.860(8),γ=75.533(6)o,V=0.9563(1) nm3,Z=2,Dc=1.914 g/cm3,F(000)=528,μ=6.078 mm-1,S=1.042,the final R=0.0253 and w R=0.0549.1H-(Pyrazol-1-ylmethyl)-1,2,3-benzotriazoles acted as monodentate ligands through the 3-position nitrogen of the triazolyl group,and the pyrazolyl nitrogen did not participate in coordinating to the metal centers in these complexes.Their UV and fluorescence properties have been studied.