title: Surface enhanced Raman scattering, electronic spectrum, natural bond orbital, and Mulliken charge distribution in the normal modes of diethyldithiocarbamate copper (II) complex, [Cu(DDTC)2].
abstract: Surface-enhanced Raman scattering (SERS) was used to study the interactions of the normal modes of the diethyldithiocarbamate copper (II) complex, [Cu(DDTC)2] on nano-structured mixture silver-gold surfaces and on silver surfaces. The electronic spectrum of this complex was measured and the charge transfer bands were assigned through the TD-PBE1PBE procedure. Natural bond orbital (NBO) were also carried out to study the Cu(II) hybridation leading to the square planar geometry of the framework of the [Cu(DDTC)2] complex, and to study which are the donor NBO and the acceptor NBO in meaningful charge transfer through the Second Order Perturbation Theory Analysis of the Fox Matrix in NBO basis. To see the electronic dispersion, the Mulliken electronic charges (MAC) were calculated for each normal mode and correlated with the SERS effect. Full assignment of the SERS spectra was also supported by carefully analysis of the distorted geometries generated by the normal modes.
authors: Laboratory of Biomedical Vibrational Spectroscopy, IP&D, Research and Development Institute - UNIVAP, Av. Shishima Hifumi, 2911, Urbanova, 12.224-000 São José dos Campos, SP, Brazil. Electronic address: cayotellez@gmail.com.
authors: C A
authors: CA
authors: Téllez Soto
authors: A C
authors: AC
authors: Costa
authors: J M
authors: JM
authors: Ramos
authors: L S
authors: LS
authors: Vieira
authors: N C V
authors: NC
authors: Rost
authors: O
authors: O
authors: Versiane
authors: J L
authors: JL
authors: Rangel
authors: M A
authors: MA
authors: Mondragón
authors: L
authors: L
authors: Raniero
authors: A A
authors: AA
authors: Martin
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D004050:Ditiocarb / Q000737:chemistry*; D004583:Electrons; D008958:Models, Molecular; D013056:Spectrophotometry, Ultraviolet; D013059:Spectrum Analysis, Raman
chemical_list: D056831:Coordination Complexes; D003300:Copper; D004050:Ditiocarb
keywords: Diethyldithiocarbamate copper (II) complex; Mulliken charges; NBO; SERS; Spectrum; UV–vis