The coordination compound of [Pb（PNS）（NO3）Cl]·H2O was synthesized by using ligand PNS and lead nitrate.The molecular structure of [Pb（PNS）（NO3）Cl]·H2O was determined by using a single crystal diffraction analysis.The crystal belongs to triclinic with space group P1-.The unit cell parameters are as follows:a=0.7634（3）nm,b=0.7794（3）nm,c=1.0679（5）nm,d=102.087（13）°,β=91.605（13）°,（γ=91.605（10）°,V=0.6262（5）nm3,Z=2,Mr=2.582g/cm3）,μ=13.709mm-1,F（000）=452,R1=0.0355,wR2=0.0785 for the title complex.In [Pb（PNS）（NO3）Cl]·H2O,the Pb（Ⅱ） ion has a distorted square pyramided coordination geometry coordinated by two N and one O atoms from PNS,one Cl-ion and one 0 atom from nitrate ion.
