Synthesis and crystal structure of two stereochemical isomers of the trans-dichloro(1,4,8,11-tetraazacyclotetradecane)chromium(III) cation
Por:
Flores-Vélez L.M., Sosa-Rivadeneyra J., Sosa-Torres M.E., Rosales-Hoz M.J., Toscano R.A.
Publicada:
1 ene 1991
Resumen:
Two stereoisomers of the cationic trans-[Cr(cyclam)Cl2]+ complex (cyclam = 1,4,8,11-tetraazacyclotetradecane) were prepared and isolated as the nitrate and tetrachlorozincate salts and their structures determined by X-ray diffraction studies of the monoclinic crystals of the nitrate salt, a = 6.480(2), b = 18.862(12), c = 13.628(6) Å, ? = 100.28(3)°, and tetragonal crystals for the tetrachlorozincate salt, a = 16.377(4), c = 6.821(2) Å. The two complexes show an octahedral geometry about the metal atoms with the RSSR configuration but with differences in the conformations of the six-membered rings.
Filiaciones:
División de Estudios de Posgrado, Facultad de Química, Universidad Nacional Autónoma de Mexico, Coyoacan 04510, Mexico D.F., Mexico
Instituto de Quimica, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, Coyoacan 04510, Mexico D.F., Mexico
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