Green chemistry aspires to develop new chemicals with manufacturers meet the needs of the present without compromising the ability of future generations to meet their own needs. Based on the benefits that it has on human health, the environment, and even the economy and businesses, it has become vital to change the tarnished image of chemistry. The importance in a model water-soluble homogeneous rhodium (I) catalyst, with an N,O bidentate ligand, is to understand the relationship between activity and the catalyst structure. The manipulation of the reactivity of Rh(I) metal centre in [Rh(Bid)(CO)( PR3)] complexes (Bid = various monocharged O,O; O,S; N,S; N,O donor atom bidentate ligands) have previously been studied and was expanded upon in this investigation. A range of 4-R-PhonyH (R = aromatic substituent; PhonyH = 4-(phenylamino)pent-3-en-2-onate) derivatives with various electron withdrawing and donating substituents on the para position of the N-phenyl ring were synthesised and coordinated to a rhodium(I) dicarbonyl chloride dimer to form complexes of the type [Rh(4-R-Phony)(CO)2]. One CO in these [Rh(4-R-Phony)(CO)2] complexes were then substituted with PR3 [PR3 = PPh3 triphenylphospine and PTA (1,3,5-triaza-7-phosphaadamantane)] to form [Rh(4-R-Phony)(CO)( PR3)] (see Figure 1i.) complexes that were used for preliminary kinetic studies.

Environmentally friendly rhodium(I) model catalysts

2019 Fall National Meeting

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