Multinuclear compounds of s-elements with sterically hindered о-semiquinonates and catecholates

Journal Article · Mon Jan 15 04:00:00 EST 2018 · Russian Chemical Bulletin

DOI:https://doi.org/10.1007/S11172-018-2038-2· OSTI ID:22863399

Letyagin, G. A.; Romanenko, G. V.; Bogomyakov, A. S.; Petrova, M. V.; Morozov, V. A.; Ovcharenko, V. I. ^[1]

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1. Siberian Branch of the Russian Academy of Sciences, International Tomography Center Institute (Russian Federation)

Alkali metals form mutinuclear compounds with redox-active singly and doubly reduced derivatives of sterically of hindered о-benzoquinones. Complexes [Na{sub 6}(Cat){sub 3}(THF){sub 7}]•4THF, [Na{sub 5}(Cat){sub 2}(SQ)(THF){sub 5}], [Na{sub 4}(SQ){sub 4}(THF){sub 4}]•THF•C{sub 6}H{sub 14}, [Na{sub 4}(3,5-SQ){sub 4}(THF){sub 4}], [K{sub 4}(SQ){sub 4}(THF){sub 4}]•4THF and [Li{sub 3}(SQ){sub 3}(THF){sub 3}]•THF (Cat is catecholate, SQ is semiquinonate) possessing high sensitivity to atmospheric oxygen were synthesized and their structures were determined. Magnetochemical measurements and quantum chemical calculations revealed that variation of the alkali metal and/or change in the structure of the polymetallic core significantly affect the energy of exchange interaction between the unpaired electrons of the paramagnetic ligands framing the polynuclear metal core formed by s-elements.

• OSTI ID: 22863399
• Journal Information: Russian Chemical Bulletin, Journal Name: Russian Chemical Bulletin Journal Issue: 1 Vol. 67; ISSN RCBUEY; ISSN 1066-5285
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
BENZOQUINONES
COMPLEXES
ELECTRONS
EXCHANGE INTERACTIONS
HEXANE
LITHIUM
OXYGEN
PARAMAGNETISM
POTASSIUM
SENSITIVITY
SODIUM
TETRAHYDROFURAN