Mono- and bis-[2-(P,P-dimethylphosphanyl)ethyl]tetramethylcyclopentadienyl zirconium(IV) complexes: Synthesis and structural studies in crystalline state and in solutions

Krut’ko, D.P.; Borzov, M.V.; Veksler, E.N.; Churakov, A.V.; Kuz’mina, L.G.

Авторы: Krut’ko D.P., Borzov M.V., Veksler E.N., Churakov A.V., Kuz’mina L.G.
Журнал: Journal of Organometallic Chemistry
Том: 690
Номер: 17
Год издания: 2005
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 4036
Последняя страница: 4048
DOI: 10.1016/j.jorganchem.2005.06.008
Аннотация: Synthetic routines for a new ligand C5Me4CH2CH2PMe2 (2b) in forms of its Li- (2b-Li), Na- (2b-Na) salts and in the CH-form (2b-H), as well as for silanes Me3Si-C5H4CH2CH2PMe2 (3a) and Me3Si-C5Me4CH2CH2PMe2 (3b) have been developed. On the basis of it, new half-sandwich [h5:h1-kP-C5H4CH2CH2PMe2]ZrCl3 (4a), [h5:h1-kP-C5Me4CH2CH2PMe2]ZrCl3 (4b) and sandwich [h5-C5Me4CH2CH2PMe2]2ZrCl2 (5), [h5-C5Me4CH2CH2PMe2][h5-C5Me5]ZrCl3 (6) complexes of Zr(IV) have been prepared and characterized. Along with them, the first example of X-ray structurally characterized dinuclear Zr(IV) complex incorporating both sandwich (6) and half-sandwich (4b) moieties linked one to another by means of Zr P coordination bond 7, has been described. Formation of an analogously organized trinuclear complex 8, built from one sandwich fragment of 5 and two half-sandwich fragments of 4b was proved by NMR spectroscopy methods. Molecular structures of half-sandwich complexes in their solvent-free dimeric forms (4a and 4b) and as 1:1 adducts with THF (4a-THF and 4b-THF) along with those of dinuclear complex 7 have been established by X-ray diffraction analyses. The dynamic behavior for di- and trinuclear complexes 7 and 8, due to the intermolecular dissociation–coordination of the Me2P-groups in THF-d8 solutions has been studied by variable-temperature NMR spectroscopy.
Добавил в систему: Крутько Дмитрий Петрович

	ИСТИНА	Войти в систему Регистрация
	ИСТИНА ЦЭМИ РАН
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ИСТИНА ЦЭМИ РАН

Mono- and bis-[2-(P,P-dimethylphosphanyl)ethyl]tetramethylcyclopentadienyl zirconium(IV) complexes: Synthesis and structural studies in crystalline state and in solutionsстатья Исследовательская статья

Прикрепленные файлы