Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Multinuclear compounds of s-elements with sterically hindered o-semiquinonates and catecholates. / Fokin, S. V.; Letyagin, G. A.; Romanenko, G. V. и др.
в: Russian Chemical Bulletin, Том 67, № 1, 01.2018, стр. 61-70.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Multinuclear compounds of s-elements with sterically hindered o-semiquinonates and catecholates
AU - Fokin, S. V.
AU - Letyagin, G. A.
AU - Romanenko, G. V.
AU - Bogomyakov, A. S.
AU - Petrova, M. V.
AU - Morozov, V. A.
AU - Ovcharenko, V. I.
PY - 2018/1
Y1 - 2018/1
N2 - Alkali metals form mutinuclear compounds with redox-active singly and doubly reduced derivatives of sterically of hindered o-benzoquinones. Complexes [Na-6(Cat)(3)(THF)(7)]center dot 4THF, [Na-5(Cat)(2)(SQ)(THF)(5)], [Na-4(SQ)(4)(THF)(4)]center dot THF center dot C6H14, [Na-4(3,5-SQ)(4)(THF)(4)], [K-4(SQ)(4)(THF)(4)]center dot 4THF and [Li-3(SQ)(3)(THF)(3)]center dot 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.
AB - Alkali metals form mutinuclear compounds with redox-active singly and doubly reduced derivatives of sterically of hindered o-benzoquinones. Complexes [Na-6(Cat)(3)(THF)(7)]center dot 4THF, [Na-5(Cat)(2)(SQ)(THF)(5)], [Na-4(SQ)(4)(THF)(4)]center dot THF center dot C6H14, [Na-4(3,5-SQ)(4)(THF)(4)], [K-4(SQ)(4)(THF)(4)]center dot 4THF and [Li-3(SQ)(3)(THF)(3)]center dot 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.
KW - semiquinonates
KW - catecholates
KW - lithium
KW - sodium
KW - potassium
KW - structure
KW - TRANSITION-METAL-COMPLEXES
KW - REDOX SERIES
KW - ELECTRONIC-STRUCTURE
KW - VALENCE TAUTOMERISM
KW - QUINONE COMPLEXES
KW - NITRONYL-NITROXIDE
KW - MAGNETIC EXCHANGE
KW - OXIDATION-STATES
KW - X-RAY
KW - LIGANDS
M3 - Article
VL - 67
SP - 61
EP - 70
JO - Russian Chemical Bulletin
JF - Russian Chemical Bulletin
SN - 1066-5285
IS - 1
ER -
ID: 18649340