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Bioinorganic Vanadium Chemistry (Inorganic Chemistry: A by Dieter Rehder

By Dieter Rehder

Cotton S. / Коттон С.
Henderson W. / Хендерсон У.
Komiya S. / Комия С.
Lawrence G.A. / Лоренц Дж.А.
Muller U. / Мюллер У.
Rehder D. / Редер Д.
Описание:
Список книг: Amouri, H. / Амури, Х. - Chirality in Transition steel Chemistry. Molecules, Supramolecular Assemblies and fabrics (Inorganic Chemistry - A Textbook sequence) / Хиральность в химии переходных металлов. Молекулы, супрамолекулярные ансамбли и материалы (Неорганическая химия: серия учебников Wiley)
Cotton S. / Коттон С. - Lanthanide and Actinide Chemistry (Inorganic Chemistry - A Textbook sequence) / Химия лантаноидов и актиноидов (Неорганическая химия: серия учебников Wiley)
Henderson W. / Хендерсон У. - Mass Spectrometry of Inorganic, Coordination and Organometallic Compounds - Tools-Techniques-Tips (Inorganic Chemistry - A Textbook sequence) / Масс-спектрометрия неорганических, координационных и металлорганических соединений (Неорганическая химия: серия учебников Wiley)
Komiya S. / Комия С. - Synthesis of Organometallic Compounds - a realistic consultant (Inorganic Chemistry - A Textbook sequence) / Синтез металлорганических соединений (Неорганическая химия: серия учебников Wiley)
Lawrence G.A. / Лоренц Дж.А. - creation to Coordination Chemistry (Inorganic Chemistry - A Textbook sequence) / Введение в координационную химию (Неорганическая химия: серия учебников Wiley)
Muller U. / Мюллер У. - Inorganic Structural Chemistry (Inorganic Chemistry - A Textbook sequence) / Структурная неорганическая химия (Неорганическая химия: серия учебников Wiley)
Rehder D. / Редер Д. - Bioinorganic Vanadium Chemistry (Inorganic Chemistry - A Textbook sequence) / Бионеорганическая химия ванадия (Неорганическая химия: серия учебников Wiley)

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The primary product of hydrolysis is the hexavanadic acid derivative V6 O13 OR 4 , giving rise to a yellow colouration as the colourless triesters come into contact with moist air. 1 m−1 for alkyl alcohols, and an order of magnitude more for phenols. 15 Esters derived from divanadate, such as HV2 O6 OR 3− , have also been noted. In analogy with the vanadates, the esters are subject to protonation–deprotonation equilibria. 11). For R = Me, the solid-state structure revealed a polymer, 16 with the vanadium centres in a tetragonal pyramidal environment.

5 At pH 7, the most prominent species present in vanadate solutions of c V >∼ 1 mm is cyclic tetravanadate V4 O12 4− . 3). The formation of condensed species is favoured at higher concentrations and higher ionic strengths. 6. Exchange rates are in the millisecond region. Monoand divanadate are subject to rapid protonation/deprotonation. At pH 7, the diprotonated forms H2 VO4 − pKa = 8 17 for physiological ionic strength; H2 V2 O7 2− pKa = 8 50) predominate. e. HPO4 2− (pKa of H2 PO4 − = 6 7), carrying two negative charges.

2. 10) Halides and Esters Derived from Orthovanadic Acid Formal substitution of three OH groups in hypothetical orthovanadic acid H3 VO4 O= V OH 3 for halide leads to the trihalides VOX3 (X = F, Cl, Br). The corresponding nitrate VO NO3 3 is also known. The oxovanadium trihalides can add an additional Inorganic and Coordination Compounds of Vanadium 25 halide to form pentavalent, anionic VOX4 − (X = F, Cl) which, upon partial hydrolysis, are converted to the dioxovanadate anions, VO2 X2 − . All of these compounds are of minor – if any – interest in the physiological context, because their formation and existence in aqueous media are obsolete.

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