Structure, EPR and UV-VIS and IR spectroelectrochemistry of reversibly reducible compounds (C5Me5)IrCl(L)(PF6), L= 1,3-dimethyllumazine or 1,3-dimethylalloxazine. Journal of the Chemical Society, Faraday Transactions, (92)21:4233--4238, 1996. [PUMA: spectroelectrochem;mol alloxazine complex;flavin complex metal redn complex;electrochem lumazine spectroelectrochem;lumazine spectroelectrochem complex;pterin model;spectroelectrochem structure iridium cyclopentadienyl;EPR cyclopentadienyl EPR;crystal interaction model;iridium prepn]