Hydrides and Dihydrogen Complexes of Metalloporphyrins PDF Download
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Author: Paul Stephen Wagenknecht
Publisher:
ISBN:
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Languages : en
Pages : 316
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Author: Paul Stephen Wagenknecht
Publisher:
ISBN:
Category :
Languages : en
Pages : 316
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Author: Vincent Pons
Publisher:
ISBN:
Category : Hydrides
Languages : en
Pages : 318
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Author: Karl Kadish
Publisher: Elsevier
ISBN: 9780123932037
Category : Science
Languages : en
Pages : 472
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Book Description
Scientists in such fields as mathematics, physics, chemistry, biochemistry, biology, and medicine are currently involved in investigations of porphyrins and their numerous analogues and derivatives. Porphyrins are being used as platforms for the study of theoretical principles, as catalysts, as drugs, as electronic devices, and as spectroscopic probes in biology and medicine. The need for an up-to-date and authoritative treatise on the porphyrin system has met with universal acclaim amongst scientists and investigators.
Author: F. Montanari
Publisher: Springer Science & Business Media
ISBN: 9401722471
Category : Science
Languages : en
Pages : 364
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Oxidative catalysis by metalloporphyrin systems occupies a prominent role in the current research in the fields of chemical and biological catalysis. Our particular interest and approach has been to collect in the same volume papers dealing with both the chemical and biological aspects of the reactivity of heme systems because of the realization that a better understanding of the complementary discipline can be extremely useful for the researchers from either field. The current progress of the research on synthetic metalloporphyrin catalysts has led to the development of several systems that are able to reproduce the heme-enzyme mediated oxygenation and oxidation reactions, at least in terms of reaction types, mechanisms and often rates. These achievements have stimulated the of creating metalloporphyrin catalysts which are both ambitious project efficient and stable enough to become competitive for large-scale industrial processes. Although this project is still far from being realized, the efforts in this direction parallel those aimed at the application of heme enzymes to chemical technologies, e. g. for the mild, selective oxidation of organics or the detoxification of pollutants. Both the two approaches will be advantageous because while the enzyme systems can achieve selectivities which are probably unattainable by synthetic catalysts, the latter can be active under experimental conditions that would readily inactivate the enzymes.
Author:
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Category :
Languages : en
Pages :
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Author:
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Category : Measurement
Languages : en
Pages : 690
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Author: Leah Basickes
Publisher:
ISBN:
Category :
Languages : en
Pages : 189
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Author: H. T. Fish
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Category :
Languages : en
Pages : 194
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Author: Yunkyoung Ha
Publisher:
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Category :
Languages : en
Pages : 428
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Author: Shaun Errick Landau
Publisher:
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Category :
Languages : en
Pages : 0
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['Trans'-Fe(H2)(CO)(dppe)2]2+ (pKa -5) was generated by protonation while [' trans'-Fe(H2)(CO)(depe)2]2+ (pK a -2) was generated using molecular H2. These complexes were characterized in solution but were not isolated. ['Trans'-Fe(BF 4)(CO)(depe)2][BF4] and ['Trans'-Fe(OTf)(CO)(depe) 2][OTf] were isolated and characterized. ['Trans'-FeF(CO)(depe) 2]+ was generated from ['trans'-Fe(BF 4)(CO)(depe)2]+ and characterized in solution but was not isolated. The compounds [K('Q')][IrH4(PR3) 2] ('Q' = 18-crown-6, R = Ph, iPr, Cy; ' Q' = aza-18-crown-6, R = iPr; 'Q' = diaza-18-crown-6, R = Ph, iPr, Cy) were formed in the reactions of IrH5(PR3)2 with KH and 'Q'. The PCy3 compounds were not isolated. In solution [IrH4(PR 3)2]- (R = Ph, Cy) are 'cis' but [IrH4(P'i'Pr3)2] - is a mixture of 'cis' and 'trans' isomers. There is evidence of solution proton-hydride bonding of the aza salts. In the solid state the anion in [K(18-crown-6)][IrH4(Pi Pr3)2] is 'cis' but it is ' trans' in [K(diaza-18-crown-6)][IrH4(PiPr3)2]. [K(diaza-18-crown-6)][IrH4(PR3)2] (R =Ph, iPr) form solid-state chains linked by proton-hydride bonds.
