Electrochemical and Photophysical Properties of a Series of Group-14 Metalloles

Justin Ferman; Joseph P. Kakareka; Wim T. Klooster; Jerome L. Mullin; Joseph Quattrucci; John S. Ricci; Henry J. Tracy; William J. Vining; Scott Wallace

doi:10.1021/ic980662d

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Electrochemical and Photophysical Properties of a Series of Group-14 Metalloles

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Electrochemical and Photophysical Properties of a Series of Group-14 Metalloles

Justin Ferman, Joseph P. Kakareka, Wim T. Klooster, Jerome L. Mullin, Joseph Quattrucci, John S. Ricci, Henry J. Tracy, William J. Vining and Scott Wallace

Inorganic chemistry, Vol.38(10), pp.2464-2472

05-01-1999

DOI: https://doi.org/10.1021/ic980662d

Abstract

A series of six group-14 dimethyl- or diphenyl−tetraphenylmetallacyclopentadienes were synthesized and characterized by their spectroscopic and electrochemical properties. The group-14 elements investigated were silicon, germanium, and tin. (The compounds are designated according to the heteroatom and the substituent on the heteroatom, i.e., SiMe, SiPh, ..., SnPh.) Five of the six compounds luminesce in both the solid state and in solution. The emission maxima of SiPh, GePh, and SnPh are invariant to a change in the heteroatom, while for SiMe, GeMe, and SnMe there is a strong dependence of the emission maxima on the identity of the heteroatom. SiMe emits at a longer wavelength than GeMe, while SnMe is not luminescent. The dramatic luminescence difference between the two tin compounds was investigated. 13C NMR coupling to 119/117Sn, observed in both SnMe and SnPh, was used to make 13C NMR resonance assignments. Qualitative results of semiempirical molecular orbital calculations support the 13C NMR assignments. The crystal structure data for SnPh was obtained at 20 °C: a = 10.353(2) Å, b = 16.679(2) Å, c = 9.482(1) Å, α = 99.91(1)°, β = 106.33(1)°, γ = 77.80(1)° with Z = 2 in space group P1̄. It is proposed that the increased electron density at tin in SnMe is responsible for the deactivation of the emissive state. The presence of phenyl substituents in SnPh serves to stabilize the emissive state and luminescence is observed.

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Title: Electrochemical and Photophysical Properties of a Series of Group-14 Metalloles
Creators: Justin Ferman - Department of Chemistry, University of Southern Maine, Portland, Maine, Department of Chemistry, University of Massachusetts, Amherst, Massachusetts, College of Arts and Sciences, Florida Gulf Coast University, Ft. Myers, Florida, Chemistry Department, Brookhaven National Laboratory, Upton, New York, and Department of Life Sciences, University of New England, Biddeford, Maine
Joseph P. Kakareka - Florida Gulf Coast University
Wim T. Klooster - Department of Chemistry, University of Southern Maine, Portland, Maine, Department of Chemistry, University of Massachusetts, Amherst, Massachusetts, College of Arts and Sciences, Florida Gulf Coast University, Ft. Myers, Florida, Chemistry Department, Brookhaven National Laboratory, Upton, New York, and Department of Life Sciences, University of New England, Biddeford, Maine
Jerome L. Mullin - Department of Chemistry, University of Southern Maine, Portland, Maine, Department of Chemistry, University of Massachusetts, Amherst, Massachusetts, College of Arts and Sciences, Florida Gulf Coast University, Ft. Myers, Florida, Chemistry Department, Brookhaven National Laboratory, Upton, New York, and Department of Life Sciences, University of New England, Biddeford, Maine
Joseph Quattrucci - Department of Chemistry, University of Southern Maine, Portland, Maine, Department of Chemistry, University of Massachusetts, Amherst, Massachusetts, College of Arts and Sciences, Florida Gulf Coast University, Ft. Myers, Florida, Chemistry Department, Brookhaven National Laboratory, Upton, New York, and Department of Life Sciences, University of New England, Biddeford, Maine
John S. Ricci - Department of Chemistry, University of Southern Maine, Portland, Maine, Department of Chemistry, University of Massachusetts, Amherst, Massachusetts, College of Arts and Sciences, Florida Gulf Coast University, Ft. Myers, Florida, Chemistry Department, Brookhaven National Laboratory, Upton, New York, and Department of Life Sciences, University of New England, Biddeford, Maine
Henry J. Tracy - Department of Chemistry, University of Southern Maine, Portland, Maine, Department of Chemistry, University of Massachusetts, Amherst, Massachusetts, College of Arts and Sciences, Florida Gulf Coast University, Ft. Myers, Florida, Chemistry Department, Brookhaven National Laboratory, Upton, New York, and Department of Life Sciences, University of New England, Biddeford, Maine
William J. Vining - Department of Chemistry, University of Southern Maine, Portland, Maine, Department of Chemistry, University of Massachusetts, Amherst, Massachusetts, College of Arts and Sciences, Florida Gulf Coast University, Ft. Myers, Florida, Chemistry Department, Brookhaven National Laboratory, Upton, New York, and Department of Life Sciences, University of New England, Biddeford, Maine
Scott Wallace - Department of Chemistry, University of Southern Maine, Portland, Maine, Department of Chemistry, University of Massachusetts, Amherst, Massachusetts, College of Arts and Sciences, Florida Gulf Coast University, Ft. Myers, Florida, Chemistry Department, Brookhaven National Laboratory, Upton, New York, and Department of Life Sciences, University of New England, Biddeford, Maine
Publication Details: Inorganic chemistry, Vol.38(10), pp.2464-2472
Publisher: AMER CHEMICAL SOC
Number of pages: 9
Identifiers: 99383436581806570
Academic Unit: Department of Chemistry & Physics
Language: English
Resource Type: Journal article

Electrochemical and Photophysical Properties of a Series of Group-14 Metalloles

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