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Optical and Vibrational Properties of [Pt@Pb 12 ] 2– , [Ni@Pb 12 ] 2– , and [Ni@Pb 10 ] 2– Zintl Ion Clusters
Author(s) -
Cetin Asude,
Esenturk Okan,
Esenturk Emren Nalbant
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201700032
Subject(s) - chemistry , fourier transform infrared spectroscopy , analytical chemistry (journal) , ion , spectroscopy , infrared spectroscopy , molecular vibration , cluster (spacecraft) , absorption spectroscopy , crystallography , molecule , physics , optics , organic chemistry , chromatography , quantum mechanics , computer science , programming language
The optical and vibrational properties of Pt‐ and Ni‐centered Pb‐Zintl‐ion clusters have been investigated by UV/Vis and FTIR spectroscopy. Computational studies have been performed to better interpret the experimental data, due to a lack of any FTIR and UV/Vis spectroscopic studies on these clusters or similar ones in the literature. UV/Vis spectroscopic analyses show an asymmetric broad absorption band, with a maximum at 265 nm for both Pt‐ and Ni‐centered Pb clusters. FTIR spectroscopic analysis demonstrated that the vibrational modes of the clusters appear at the low‐frequency (terahertz) range of the spectrum. Vibrational modes of [Pt@Pb 12 ] 2– and [Ni@Pb 12 ] 2– are observed at 74 cm –1 , and those of [Ni@Pb 10 ] 2– appear at 86, 143, and 200 cm –1 . Similarities between simulated and experimental spectra strongly support isolated cluster behavior. [Pt@Pb 12 ] 2– , [Ni@Pb 12 ] 2– , and [Ni@Pb 10 ] 2– are the only Zintl ion clusters that have been characterized with UV/Vis and FTIR spectroscopic analyses to elucidate their optical and vibrational properties.