Organic Derivatives of Transition Metals

Attention must also be drawn to some more recent accounts of the organic derivatives of transition metals,9 including cyclopentadienyl-,10 allyl-,11 and cyclobutadienyl-metal com-... 

It is immediately apparent that analogous organic derivatives of transition metals can be named in exactly the same manner ... 

Since the early fifties there has been a great deal of work on the organic derivatives of transition metals and many exciting new types of compounds have been isolated and studied. 

Kuzmina and Struchkov 37) reported the structure of some organic compounds of transition metals, including triphenylstannyl derivatives of 2-dimethylamino-... 

The r/ -acyl derivatives of transition metals are usually compounds with covalent properties and moderate to good solubilities in common organic solvents, and sometimes with sufficiently good volatility that they can be isolated and/or purified by recrystallization or by sublimation under reduced pressure. Sometimes care has to be taken since the acyl or aroyl complexes may be or may become thermodynamically unstable with respect to the corresponding alkyl or aryl compounds. Heating to elevated temperatures can trigger the reverse of reaction (b) to become a kinetically important path, when the compounds have been prepared by route (a) or when the carbonyl insertion (b) has been carried out at low temperature. 

Alkali Metal Derivatives of Metal Carbonyls, 2, 157 Alkyl and Aryl Derivatives of Transition Metals, 7, 157 Alkylcobalt and Acylcobalt Tetracarbonyls, 4, 243 Allyl Metal Complexes, 2, 325 ir-Allylnickel Intermediates in Organic Synthesis, 8, 29... 

Peroxo derivatives of transition metals are apparently intermediates in the oxidations of organic compounds by hydrogen peroxide or alkyl hydroperoxides catalyzed by various metal complexes. These processes will be discussed in the following chapters. 

Decomposition of preformed transition metal complexes - where the metals are already in a low valent state - in the presence of surfactants or other types of stabilizers is another route to colloidal metal nanoparticles that was pioneered by Bradley and Chaudret [6, 7, 46-55]. Organometalhc complexes and several organic salt derivatives of transition metals easily decompose when energy is applied, e.g. 

A large number of organometallic compounds are based on transition metals Examples include organic derivatives of iron nickel chromium platinum and rhodium Many important industrial processes are catalyzed by transition metals or their complexes Before we look at these processes a few words about the structures of transition metal complexes are m order... 

Section 14 15 Coordination polymerization of ethylene and propene has the biggest eco nomic impact of any organic chemical process Ziegler-Natta polymer ization IS carried out using catalysts derived from transition metals such as titanium and zirconium tt Bonded and ct bonded organometallic com pounds are intermediates m coordination polymerization... 

Yosida et al. [41] found that p-t< rr-butylcalix[6]ar-ene can extract Cu from the alkaline-ammonia solution to the organic solvent. Nagasaki and Shinkai [42] described the synthesis of carboxyl, derivatives of calix-[n]arenes ( = 4 and 6) and their selective extraction capacity of transition metal cations from aqueous phase to the organic phase. Gutsche and Nam [43] have synthesized various substituted calix[n]arenes and examined the complexes of the p-bromo benzene sulfonate of p-(2-aminoethyl)calix[4]arene with Ni, Cu , Co-, and Fe. ... 

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