EPR and optical studies in pseudotetrahedral tetramethyl ammonium copper {II) bromide

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dc.creatorDe, Dilip Kumar
dc.date1983-07
dc.date.accessioned2025-03-27T18:59:17Z
dc.descriptionEPR studies of single crystal copper tetramethyl ammonium bromide, T2CuBr4(T = (CH3~4N] in the temperature range 77-300 K indicate the largest covalency in this compound compared to similar halogenated pseudotetrahedral copper compounds. The angle cos _,r between the c axis and the ionic g 11 axis is 12' and 65' at 250 and 220 K, respectively. The change is continuous down to 200 K. The g shift between 300 and 200 K indicates an increase in the strength of the ligand field with lowering of temperature. The magnetic susceptibility ellipsoid and the g -tensor ellipsoid do not coincide in this material. Optical spectra in T2(Cu:Zn)Br4 have been assigned. The nonobservation of an EPR signal in T,(Cu:Zn)Br4 and Cs2CuBr4 indicates that ligand field properties in these pseudotetrahedral compounds are quite different from that of T2CuBr4•
dc.formatapplication/pdf
dc.identifierhttp://eprints.covenantuniversity.edu.ng/5109/
dc.identifier.urihttps://repository.covenantuniversity.edu.ng/handle/123456789/34411
dc.languageen
dc.subjectQH301 Biology
dc.titleEPR and optical studies in pseudotetrahedral tetramethyl ammonium copper {II) bromide
dc.typeArticle

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