Add time:07/29/2019         Source:sciencedirect.com

The reaction of [Co(NH2CH2CONCH2CO2)CN(en)] with formaldehyde under basic conditions leads to the formation of four products: cyano(ethylenediamine) [N-(4-carbonyl-4-hydroxymethyl-oxazolidine)glycinato]cobalt(III) ([Co(CH2OCH2NHC(CH2OH)CONCH2CO2)CN(en)]) (1), dicyanobis(ethylenediamine) {μ-N-(((methylimino)methyl)carbonyl)(α-methylserinato)-glycylglycinato}dicobalt(III) tetrahydrate ([Co(en)CN(CH3NCHCONC(CH2OH)CO2)-Co(NHCH2CONH2CO2)CN(en)]·4H2O) (2), cyano(ethylenediamine) (N-methylidene-glycylglycinato)cobalt(III) monohydrate ([Co(CH2NCH2CONCH2CO2)CN(en)]·H2O) (3), and cyano(ethylenediamine) (N-hydroxymethylglycylglycinato)cobalt(III) ([Co(HOCH2NHCH2CONCH2CO2)CN(en)]) (4). The products obtained were separated by adsorption chromatography on a cationic exchanger, in the hydrogen form, and characterized by elemental analysis, 1H and 13C NMR spectroscopy. The structures of complexes 1 and 2 were determined by X-ray crystallography. The central features of the investigated reaction are: (a) condensation of formaldehyde takes place with the amino and both of the methylene groups of the coordinated glycylglycine; (b) formation of a binuclear complex in which one of the introduced formaldehyde moieties links two coordinated dipeptidato ligands. A possible mechanism for the reaction is proposed.

We also recommend Trading Suppliers and Manufacturers of (Methylimino)bis(formaldehyde) (cas 18197-25-6). Pls Click Website Link as below: cas 18197-25-6 suppliers