Inter- and intra-molecular condensations of CN– and NH2– with co-ordinated acetonitrile: an amino acid synthesis. X-Ray crystal structure of [(NH3)3Co{(Me)C(NH2)(NH2CNH2)2}]Br3·2/3H2O

Abstract

[(NH₃)₅CoNCMe]³⁺ is attacked by CN^– at the nitrile C atom and addition of another CN^– with two intramolecular condensations involving bound amide ions yields a tridentate bis(amidine)aminomethyl malonate chelate complex [(NH₃)₃Co{(Me)C(NH₂)(NHCNH₂)₂}]-Br₃·²/₃H₂O whose structure is reported.