Photochemical reactions, of metal carbonyls

The dominant photochemical reaction of metal carbonyl compounds is loss of carbon monoxide, which is usually followed by substitution of another ligand to replace the expelled carbon monoxide. 

Photochemical Reactions of Metal Carbonyls with Dihydrogen... 

There are very many known photochemical reactions of metal carbonyls two classic examples are the substitution of a CO group by a donor ligand, for example, a... 

Chemical and photochemical reactions of metal carbonyl cluster compounds on solid surfaces [analysed by EXAFS]... 

Reviews dealing with the photochemical reactions of metal carbonyls and the photochemistry of metal carbonyls in matrices have appeared. A third review is concerned with the kinetics and mechanisms of CO substitution in Group VI metal carbonyls. ... 

Table 6.1. Photochemical Reactions of Metal Carbonyl Complexes having Nitrogen Donor Ligands"...

A variety of synthetic routes to monoene and polyene tri-fluorophosphine-transition metal complexes have been devised. Direct photochemically induced reaction of a metal-PF3 complex with an activated alkene or diene (method A) has proved useful only for iron, the products being either [Fe(PF3)4(alkene)J or [Fe(PF3)3(diene)] (194). Mixed carbonyl-trifluorophosphine complexes of the type [Fe(PF3)x(CO)3 x(diene)] result from either thermal or photochemical reactions of dieneiron carbonyl complexes and PF3 (52, 53) (method B). The compounds are fluxional. 

G. Photochemical Addition and Elimination Reactions of Metal Carbonyl... 

There are several recent reviews of the photochemistry of transition metal complexes 3,4,5,29,30,45,466,514,518,580)> the most comprehensive being 4>. However, these papers deal mainly with ionic coordination compounds containing inorganic ligands only one 466> is devoted to photochemical substitution reactions of metal carbonyls and their derivatives, while in another 4> this subject is discussed in a short paragraph. 

Several cases of desoxygenation of organic compounds have been observed in the course of photochemical reactions with metal carbonyls. 

Recent examples of preparative applications of photosubstitution reactions of metal carbonyls are collected in Table 5 (see p. 193). Others, less suited to tabular presentation, are discussed below in the section dealing with the particular element. In general, synthetic methods involving initial photochemical formation of the metal carbonyl-THF complex, followed by thermal reaction of this complex with an added substituent, have not been included. 

Table 5 Photochemical substitution reactions of metal carbonyl compounds Substrate... 

Over the last decade the spectroscopy, photochemistry and reactivity of metal carbonyls has been a subject of intense interest. As a result of this research it has been found that metal carbonyls undergo a wide range of facile photochemical reactions [1,2]. 

The photochemical reaction of bis(hydridodimethylgermyl)methane/ethane, HMe2Ge (CH2) GeMe2H (n = 1, 2) with metal carbonyls of Fe, Co and Ru in pentane yielded a series of cyclic derivatives 1 and 273-79. 

---