Synthesis, crystal structure and spectroscopic characterisation of double salt [Zn(bpy)(3)](CrO4)(0.5)NO(3)6.5H(2)O

摘要

A new Zn(II) complex with 2,2'bipyridine (bpy), chromate and nitrate groups, [Zn(bpy)(3)](CrO4)(0.5)NO(3)6.5H(2)O has been prepared and characterised with crystallographic and spectroscopic methods. The orthorhombic complex crystallises in the space group Ccc2 with the lattice constants a = 13.992(3) Angstrom, b = 24.483(5) Angstrom, c = 21.556(4) Angstrom and Z = 8. The coordination 02 environment about Zn(II) ion is nearly octahedral. The CrO42- and NO3- entities exhibit anionic position in the crystal. The electronic spectra enhanced with mathematical methods (filtration and deconvolution) exhibit the presence of vibrational fine structure in the CrO42- entity on the spin-forbidden T-3(1) transition. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 49]