Spectroscopy and photophysics of Rh{sub 2}(dimen){sub 4}{sup 2+} (dimen = 1,8-diisocyanomenthane). Exceptional metal-metal bond shortening in the lowest electronic excited states
- Arthur Amos Noyes Lab., Pasadena, CA (United States)
- Wabash College, Crawfordsville, IN (United States); and others
Rh{sub 2}(dimen){sub 4}{sup 2+} (dimen = 1,8-diisocyanomenthane) exhibits very long Rh-Rh bond distances in the solid state (varying from 4.48 {angstrom} for the PF{sub 6}{sup {minus}}salt to 3.861 {angstrom} for the B(C{sub 6}H{sub 5}){sub 4}{sup {minus}}salt), but the lowest d{sigma}* {yields} p{sigma} excitation produces an excited state with a considerably shorter Rh-Rh distance ({approximately}3.2 {angstrom}). Several techniques (absorption, single-crystal polarized absorption, emission, polarized excitation, resonance Raman, fluorescence, phosphorescence lifetime data, and MM2 calculations) help describe the ground- and lowest excited-state potential energy surfaces of this complex.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 420935
- Journal Information:
- Inorganic Chemistry, Journal Name: Inorganic Chemistry Journal Issue: 13 Vol. 33; ISSN 0020-1669; ISSN INOCAJ
- Country of Publication:
- United States
- Language:
- English
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