Complete Ag4M2(DMSA)4 (M = Ni, Pd, Pt, DMSA = Dimercaptosuccinic Acid) Cluster Series: Optical Properties, Stability, and Structural Characterization

Scott R. Biltek, Arthur C. Reber, Shiv N. Khanna, Ayusman Sen

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The cluster series Ag4M2(DMSA)4 (M = Ni, Pd, Pt) has been synthesized and the optical spectra and stability have been examined as a function of the metal, M. We have also obtained the structure of Ag4Ni2(DMSA)4 using X-ray crystallography, confirming the previously calculated structure. In the optical spectrum, there is a significant blue shift as the substituted metal M progresses down the periodic table. Theoretical calculations suggest that the blue shift is due to the lowering in energy of the d orbitals of the transition metal, M; however the expected metal-metal excitations are optically weak, and the spectra are dominated by metal-ligand excitations. The Ag4Pd2(DMSA)4 species has exceptionally high stability relative to the previously reported Ni and Pt analogues.

Original languageEnglish (US)
Pages (from-to)5324-5331
Number of pages8
JournalJournal of Physical Chemistry A
Volume121
Issue number28
DOIs
StatePublished - Jul 20 2017

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Succimer
Optical properties
Metals
optical properties
acids
metals
blue shift
optical spectrum
X ray crystallography
crystallography
excitation
Transition metals
transition metals
analogs
Ligands
orbitals
ligands
x rays

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry

Cite this

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title = "Complete Ag4M2(DMSA)4 (M = Ni, Pd, Pt, DMSA = Dimercaptosuccinic Acid) Cluster Series: Optical Properties, Stability, and Structural Characterization",
abstract = "The cluster series Ag4M2(DMSA)4 (M = Ni, Pd, Pt) has been synthesized and the optical spectra and stability have been examined as a function of the metal, M. We have also obtained the structure of Ag4Ni2(DMSA)4 using X-ray crystallography, confirming the previously calculated structure. In the optical spectrum, there is a significant blue shift as the substituted metal M progresses down the periodic table. Theoretical calculations suggest that the blue shift is due to the lowering in energy of the d orbitals of the transition metal, M; however the expected metal-metal excitations are optically weak, and the spectra are dominated by metal-ligand excitations. The Ag4Pd2(DMSA)4 species has exceptionally high stability relative to the previously reported Ni and Pt analogues.",
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Complete Ag4M2(DMSA)4 (M = Ni, Pd, Pt, DMSA = Dimercaptosuccinic Acid) Cluster Series : Optical Properties, Stability, and Structural Characterization. / Biltek, Scott R.; Reber, Arthur C.; Khanna, Shiv N.; Sen, Ayusman.

In: Journal of Physical Chemistry A, Vol. 121, No. 28, 20.07.2017, p. 5324-5331.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Complete Ag4M2(DMSA)4 (M = Ni, Pd, Pt, DMSA = Dimercaptosuccinic Acid) Cluster Series

T2 - Optical Properties, Stability, and Structural Characterization

AU - Biltek, Scott R.

AU - Reber, Arthur C.

AU - Khanna, Shiv N.

AU - Sen, Ayusman

PY - 2017/7/20

Y1 - 2017/7/20

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AB - The cluster series Ag4M2(DMSA)4 (M = Ni, Pd, Pt) has been synthesized and the optical spectra and stability have been examined as a function of the metal, M. We have also obtained the structure of Ag4Ni2(DMSA)4 using X-ray crystallography, confirming the previously calculated structure. In the optical spectrum, there is a significant blue shift as the substituted metal M progresses down the periodic table. Theoretical calculations suggest that the blue shift is due to the lowering in energy of the d orbitals of the transition metal, M; however the expected metal-metal excitations are optically weak, and the spectra are dominated by metal-ligand excitations. The Ag4Pd2(DMSA)4 species has exceptionally high stability relative to the previously reported Ni and Pt analogues.

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