By Dieter Rehder
Vanadium is called after Vanadis, the main aristocratic of Norse goddesses, who symbolises attractiveness and fertility - crucial positive factors of vanadium chemistry. it's a ubiquitous hint point, with a stunning variety of organic features. In Bioinorganic Vanadium Chemistry, Dieter Rehder addresses the main facets of vanadium chemistry regarding dwelling organisms and the mutual influence among organic and inorganic vanadium chemistry. subject matters lined contain:
- the background, usual prevalence, distribution and impression of vanadium
- inorganic elements of the functionality of vanadium in organic systems
- interaction of aqueous vanadate and vanadyl with biogenic ligands
- vanadium coordination compounds
- the vanadium-carbon bond
- methods of characterisation of biogenic and version vanadium structures (EPR and ENDOR for oxovanadium(IV); 51V NMR for vanadium(V); XAS)
- vanadium in ascidians and polychaeta worms
- the focus of vanadium within the type of amavadin by means of Amanita mushrooms
- vanadate-dependent haloperoxidases
- vanadium and the nitrogen cycle
- vanadate as energiser for micro organism, and vanadophores
- medicinal aspectsm together with the anti-diabetic capability of vanadium compounds
- interaction of vanadium with proteins and protein substrates
- vanadium and phosphate-metabolising enzymes
Bioinorganic Vanadium Chemistry conveys the fundamental facets of vanadium bioinorganic chemistry, making this booklet a priceless supplement to extra common bioinorganic chemistry texts and extra really good topical studies for researchers and scholars alike.
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Additional resources for Bioinorganic Vanadium Chemistry (Inorganic Chemistry: A Textbook Series)
V taci 2 4+ (7), 42 and with benzoin (8). 43 In 8, bis(deprotonated) benzoin coordinates out of its enediolate form. 3(1) Å. 27 Examples for the coordination modes of alcoholates. See refs 17 and 39–43. 2 Coordination of O-Functional Ligands Derived from Phenolate, Catecholate and Enolate Phenols such as 1,6-bis(isopropyl) form esters derived from orthovanadic acids comparable to those observed with alcohols. 18 is an example. 1). Catechols further model catechol-based siderophores such as enterobactin and azotochelin, which very effectively coordinate many metal ions, including V4+ and vanadate (cf.
The trans influence, particularly effective in the monooxo vanadium species, weakens the V–L bond for the trans standing ligand with respect to the other bonds. The size of this effect differs. 5 Å (and even more), classifying the trans ligand as a good leaving group, and suggesting easy conversion between type IIIb (octahedral) and IIb (square pyramidal) structures. 11 (right), is an example for this intermediate situation between structure types IIIb and IIb. ), which in turn readily exchanges for a more potent ligand, most notably if this ligand function allows stabilisation through the chelate effect.
Lactic acid H2 lac starts at pH 3. 17)], is K = 10−2 48 . 19. 30b As the pH increases, the OH function also becomes deprotonated ([VO(lac)]), and bisligand complexes begin to form. 19). e. 19, and through carboxylate and alcoholate as the neutral pH is approached. Again in agreement with lactic acid, hydrolysis occurs above pH 8. 19 Proposed structures, based on complex formation constants and EPR evidence, for vanadyl complexes of lactic acid 30b and two aldaric acids, H2 L. 31 Citric acid H4 cit , is a more efficient ligand for the vanadyl ion than lactic acid.