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Picosecond transient grating study of the rotational diffusion of a ruthenium complex in solution

✍ Scribed by Arthur Henseler; Eric Vauthey

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 697 KB
Volume: 228
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(94)00914-7

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✦ Synopsis

The rotational diffusion time of ruthenium( II)-bis( 2,2'-bipyridine) (2,2'-biquinoleine) has been measured in polar solvents of different viscosity. The rotational dynamics can be explained in terms of the Stokes-Einstein-Debye hydrodynamics theory under stick boundary condition by considering the rotating body as a prolate spheroid enclosing the complex. This overestimates the intrinsic molecular volume by a factor of 1.5. The difference can be accounted for by solvent molecules intercalated in the inter&and space and stabilized by electrostatic interaction with the charge of the metal atom.

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