6533b858fe1ef96bd12b6c99

RESEARCH PRODUCT

Spectroscopic behavior of metal–drug complexes. Infrared spectra of Cu(II) dimer complexes with acetazolamide (H2acm) and an analogue sulfonamide (B-H2ats)

Eduardo E. ChufanSacramento FerrerJoaquín BorrásJosé C. Pedregosa

subject

chemistry.chemical_classificationDimerIminechemistry.chemical_elementInfrared spectroscopyPhotochemistryTautomerCopperSulfonamideCrystallographychemistry.chemical_compoundsymbols.namesakeDeprotonationchemistrysymbolsRaman spectroscopySpectroscopy

description

Abstract The infrared spectra of the drugs H2acm and B-H2ats, and their copper(II) dimer complexes with stoichiometries [Cu(acm)(NH3)2(OH2)]2·H2O and [Cu(B-ats)(NH3)2]2 are reported and discussed. The Raman spectra of H2acm and B-H2ats are also reported. An assignment of H2acm and B-H2ats modes in the complexes is proposed in comparison with the modes of the free ligands. The spectral modifications due to the deprotonation and coordination effects are analyzed. The ν(N–H) modes of the sulfonamido, carbonamido and Nring–H of the imine tautomer have been accurately assigned. Important information about the S–O and S–N vibrations has been obtained.

https://doi.org/10.1016/s0924-2031(99)00012-0