Abstract
trans-Di(cyano-κ 1)-( trans-6,13-dimethyl-6,13-bis(propionylamido)-1,4,8,11-tetraazacyclotetradecane-κ 4)cobalt(III) perchlorate dihydrate, trans-[Co(C 18H 38N 6O 2)(CN) 2)]ClO 4 · 2H 2O, is formed by reaction of trans-[Co(diam)(CN) 2]ClO 4 · 2H 2O (diam = trans-6,13-diamino-6,13-dimethyl-1,4,8,11-tetraazacyclotetradecane) with propionic anhydride in DMF. The centrosymmetrical cation has the azamacrocycle in planar coordination by the four secondary amine nitrogen atoms of the azamacrocycle, with Co–N = 1.979(2) and 1.968(2) Å and with trans cyano groups with Co–C = 1.920(2) Å. The propionylamido substituents are axially oriented, with the terminal methyl group disordered over two sites.
Published Version
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