Accession Number : ADA182896
Title : Correlation of Spectroscopic and Magnetic Data of Two Charge Transfer Compounds of TCNQ with Cationic Copper Chelates.
Descriptive Note : Technical rept.,
Corporate Author : NORTH CAROLINA UNIV AT CHAPEL HILL DEPT OF CHEMISTRY
Personal Author(s) : Schwartz,Michael ; Hatfield,William E
PDF Url : ADA182896
Report Date : 10 Jul 1987
Pagination or Media Count : 8
Abstract : Spectral data for (Cu(en)2) (TCNQ)2 reveal a TCNQ charge transfer band at 1220 nm. The lack of a contribution of paramagnetism from TCNQ(-) to that of (Cu(en)2) (TCNQ)2 is understood since a system with E sub ST of 0.12 eV would exhibit a magnetic susceptibility of .00001 emu/mole at 300 K. The magnetic susceptibility of (Cu(en)2) (TCNQ)2 indicates that one-third an electron is transferred from TCNQ- to (Cu(phen)2) (2+), and E = 0.17 eV. Since E and t are comparable in magnitude, the bandwidth is appreciable, and high electrical conductivities and low activation energies are expected, and observed. Keywords: Electronic spectroscopy; Copper complexes; Magnetic susceptibility; Electrical conductivity; Tetracyanoquinodimethane; Chelate compounds.
Descriptors : *CHELATE COMPOUNDS, *CHARGE TRANSFER, *MAGNETIC PROPERTIES, *ELECTRON SPECTROSCOPY, *METHANES, CATIONS, COPPER, ELECTRONS, ELECTRICAL CONDUCTIVITY, MAGNETIC FIELDS, PARAMAGNETISM, SPECTROSCOPY, ACTIVATION ENERGY, SPECTRA, ION EXCHANGE, ION ION INTERACTIONS, ACTIVATION ENERGY
Subject Categories : Electricity and Magnetism
Atomic and Molecular Physics and Spectroscopy
Distribution Statement : APPROVED FOR PUBLIC RELEASE