Synthesis, crystal structure and spectroscopic properties of (Acetylacetonato)(1,4,8,11-tetraazacyclotetradecane)chromium (III) diperchlorate
Document Type
Article
Publication Date
1-1-2011
Abstract
The complex [Cr(cyclam)(acac)](ClO(4))(2)center dot 0.5H2O (cyclam = 1,4,8,11-tetraazacyclotetradecane; acac = acetylacetonate) was prepared and structurally characterized by single-crystal X-ray diffraction at 100 K. The chromium atom is in a slightly distorted octahedral environment with four nitrogen atoms of the macrocyclic ligand and two O-bonded acac molecules in cis position. The cyclam ligand adopts the folded cis-V configuration with six- and five-membered chelate rings in chair and gauche conformation, respectively. The average CrN(cyclam) and CrO(acac) bonds are 2.080(4) and 1.941(3) angstrom, respectively. The IR and visible spectral properties are also described.
Publication Title
Zeitschrift fur Anorganische und Allgemeine Chemie
Volume
637
Issue
14-15