
TY  - JOUR
A1  - Angus, PM 
A1  - Golding, BT 
A1  - Jurisson, SS 
A1  - Sargeson, AM 
A1  - Willis, AC 
T1  - Intramolecular Condensation Reactions of S-Methylmethionine Coordinated to Cobalt(III)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1994
VL  - 47
IS  - 3
SP  - 501
EP  - 510
KW  - 
UR  - https://doi.org/10.1071/CH9940501 
N2  - The sulfonium salt [(en)2CoO2CCH(NH2)(CH2)2S(CH3)2]3+ (en = ethane-1,2-diamine), prepared by methylation of the thioether group of N,O-coordinated methionine , undergoes a set of complex, intramolecular condensations, oxidations, and rearrangements in aqueous base to give a novel pentadentate cobalt(III) complex (c. 20%) of the 1,9-diamino-4-hydroxy-3,7-diazanonane-4-carboxylate ion ( dhnc ). Its structure has been determined by X-ray crystallographic analysis as trans(O,O)-[Co( dhnc )(OH2)](ClO4)2.2H2O. The crystals were monoclinic, space group P 21/c with a 9.053(2), b 29.437(7), c 7.661(1) &#506;, &#946; 106.63(1)&#176;, and Z 4; 2383 data with I &#8805; 3&#963;(I) were refined to conventional R factors of 0.046 and 0.060. Investigations concerning the mechanism for the formation of this complex are described. 
ER  -

