Synthesis,Crystal Structure and Electrochemical Properties of Tri(n-butyl)tin 3-amino-2-pyrazine Formic Ester Polymer

The tri(n-butyl)tin 3-amino-2-pyrazine formic ester polymer [n-Bu3Sn(O2CC4H2N2NH2-o)]n has been synthesized and characterized by IR,1H NMR spectra and elemental analysis.Its crystal structure has been determined by X-ray diffraction.The crystal belongs to monoclinic space group P21/c with a=1.057 7(2) nm,b=1.083 6(2) nm,c=1.905 2(4) nm,β=100.604(3)°,Z=4,V=2.146 3(8) nm3,Dc=1.325 Mg·m-3,μ(Mo Kα)=1.202 mm-1,F(000)=880,R1=0.039 3,wR2=0.113 3.In the complex,tin atoms are five-coordinated distorted trigonal bipyramid configuration.Through the intermolecular N-H…N hydrogen bonds to form network structure with a "double bridge".The result of analysis shows that the Sn…/Sn(II) electron transfer in electrode reaction is irreversible.CCDC: 779860.