Read e-book online Alkoxo and Aryloxo Derivatives of Metals PDF

By Don Bradley, R. C. Mehrotra, Ian Rothwell, A. Singh

ISBN-10: 0121241408

ISBN-13: 9780121241407

This article relies on steel Alkoxides (Academic Press, 1978), and has been up to date and accelerated to incorporate advancements during this growing to be box from the prior twenty years. insurance contains homometallic alkoxides; heterometallic alkoxides; x-ray crystal constructions of alkoxo steel compounds; steel oxo-alkoxides; steel aryloxides; and their commercial functions in such components as microelectronics, ceramics, non-linear optical fabrics, high-temperature superconductors, and really good glasses. meant as a reference for these operating within the box, in addition to to be used as a supplementary textual content for complex inorganic chemistry classes.

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Additional resources for Alkoxo and Aryloxo Derivatives of Metals

Example text

82 If the alcohol R0 OH has a higher boiling point than ROH, then the desired product can be easily obtained by shifting the equilibrium of Eq. 82) by removing ROH (preferably as an azeotrope with benzene) by fractional distillation. Many of the final products (particularly those containing sterically congested and chelating alkoxo ligands) prepared by this route assume special significance because of their reduced molecularity, enhanced solubility (in organic solvents), and volatility as well as novelty in structural features (Chapter 4).

CrCl3 thf 3 C 3LiOR ROH/C6 H6 ! 68 where R D Me, Et, Bun ; when R D But , pure product is obtained only when free tert-butyl alcohol is carefully excluded. MCl2 C 2LiOR ROH/C6 H6 ! 2 Synthesis of soluble metal alkoxides The sterically compact metal alkoxides prepared by the lithium alkoxide method are generally insoluble and nonvolatile, owing to the formation of oligomers or polymers involving alkoxo bridging. 1). In this context the use of lithium derivatives of such ligands,21 which are conveniently prepared by the interaction of an alcohol with butyllithium, has played an important role.

W2 Fx OMe 10 THF x D 1–3 4 x THF ! 166 ReF6 i Si OMe ii Mg OMe 4 ! CH3 CN, 40° C 2 HOMe 2 ! 430 A methoxo group is transferred to the metal atom while phosphorus is hydrogenated to give a PH bridge: 5[AnH2 Á5 -C5 Me5 2 ]2 C 4P OMe 3 toluene ! 168 In contrast to the expected elimination of an ester in the reaction of Sn OBut 4 with Sn OAc 4 as well as with Me3 SnOAc in a refluxing hydrocarbon solvent, only ligand exchanges of the types shown below have been demonstrated to occur in coordinating solvents such as pyridine:431 3Sn OBut 4 C 3Sn OAc 4 pyridine !

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Alkoxo and Aryloxo Derivatives of Metals by Don Bradley, R. C. Mehrotra, Ian Rothwell, A. Singh


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