CRYSTAL-STRUCTURE OF ZN(TRZ)CL (TRZ=1,2,4-TRIAZOLATO) - A LAYERED COMPOUND WITH TRIPLY BRIDGING TRIAZOLATO GROUPS

ZnCl2 reacts with 1,2,4-1H-triazole to afford Zn(trz)Cl. A spontaneous deprotonation of Htrz occurs. The crystal structure of Zn(trz)Cl has been solved. The compound crystallizes in the space group P2(1)/n. The lattice parameters are a=8.863(4), b=9.762(4), c=6.146(3) Angstrom, b eta=99.56(10)degrees, with Z=4. The 1,2,4-triazolato bridges three zin c atoms through its three nitrogen atoms, affording a layered structur e. The zinc atom is in an N3Cl tetrahedral coordination. The layers ar e not planar, but rather corrugated. The chlorine atoms point to eithe r side of the layers, and play the role of spacers. The shortest inter layer Zn...Zn separation is 5.701 Angstrom.