Accession Number:

ADA172653

Title:

Synthesis, Characterization, and Charge Distribution of Bis(4-t- butylpyridine)bis(3,5-di-t-butylquinone)ruthenium

Descriptive Note:

Technical rept.

Corporate Author:

YORK UNIV NORTH YORK (ONTARIO) DEPT OF CHEMISTRY

Personal Author(s):

• Haga, Masa-Aki
• Dodsworth, Elaine S.
• Lever, A. B.
• Boone, Steven R.
• Pierpont, Cortlandt G.

Report Date:

1986-07-01

Pagination or Media Count:

15.0

Abstract:

The synthesis and characterization of bis4-t-butyl-pyridinebis3,5- di-t-butylquinoneruthenium is reported. A crystallographic molecular structure determination carried out on the complex has shown that it exists as the trans isomer and that ligand C-O lengths are relatively long for a semiquinone complex being at the bottom end of the range observed for catecholate complexes. Both quinone ligands appear structurally and electronically equivalent. The complex is diamagnetic and shows a well-resolved spectrum. Electrochemically, the complex undergoes four redox processes, all of which most likely involve both metal and quinone ligands. There are charge-transfer bands in the visible region, and an exceptionally intense and structured band in the near infrared region. The ground state is viewed as a mixture of bis4-t-butylpyridinebis3, 5-di-t-bu tylsemliquinone0rutheniumII and bis4-t-butylpyridinebis3,5-di-t- butylcatecholatoruthenium IV, with the former dominant.

Descriptors:

• *ELECTROCHEMISTRY
• *ORGANOMETALLIC COMPOUNDS
• *RUTHENIUM
• *SYNTHESIS(CHEMISTRY)
• ANALYTICAL CHEMISTRY
• BUTYL RADICALS
• CARBON
• CHARGE TRANSFER
• CRYSTALLOGRAPHY
• GROUND STATE
• ISOMERS
• LIGANDS
• MOLECULAR STRUCTURE
• OXYGEN
• PYRIDINES
• QUINONES

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE