Correlation of Spectroscopic and Magnetic Data of Two Charge Transfer Compounds of TCNQ with Cationic Copper Chelates.

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.

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Document Details

Document Type
Technical Report
Publication Date
Jul 10, 1987
Accession Number
ADA182896

Entities

People

  • M. Schwartz
  • William E. Hatfield

Organizations

  • University of North Carolina at Chapel Hill

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  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption Spectra
  • Band Gaps
  • Band Structures
  • California
  • Charge Transfer
  • Chemistry
  • Conductivity
  • Contracts
  • Electrical Conductivity
  • Electron Transfer
  • Energy Bands
  • Governments
  • Magnetic Properties
  • Military Research
  • New York
  • North Carolina
  • United States

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  • Electrochemical Surface Science
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  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

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