Crystal structure and electronic properties of ammine[tris(2-aminoethyl)amine]copper(II) diperchlorate and potassium penta-amminecopper(II) tris(hexafluorophosphate)
- 1 January 1980
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 8,p. 1342-1348
- https://doi.org/10.1039/dt9800001342
Abstract
The crystal structure of the title compounds [Cu(tren)(NH3)][ClO4]2(1) and K[Cu(NH3)5][PF6]3(2) have been determined by X-ray diffraction methods using three-dimensional diffractometer data; the structures were solved by heavy-atom techniques and successive Fourier synthesis. Compound (1) crystallises in a cubic unit cell, space group P213, with dimensions a= 11.626(3)Å and Z= 4, and (2) crystallises in the orthorhombic unit cell, space group Imma with dimensions, a= 14.90(1), b= 11.79(1), c= 10.57(1)Å, and Z= 4. The cation in (1) has a trigonal-bipyramidal molecular structure with strict C3 symmetry while that in (2) has a square-based pyramidal molecular structure with strict C2v symmetry. The polycrystalline and single-crystal electronic properties for these two σ-bonding CuN5 chromophores are reported and related to the one-electron energy levels for the two stereochemistries, using extended-Hückel molecular-orbital calculations, and correlated with earlier data on high-symmetry five-co-ordinate CuN5 chromophores.Keywords
This publication has 0 references indexed in Scilit: