861640-97-3Relevant articles and documents
Synthesis and characterization of tetraphenylporphyrin manganese(III) complexes of phenylcyanamide ligands
Safari, Nasser,Notash, Behrouz,Nezhad, Jafar Mohammad,Chiniforoshan, Hossein,Hadadzadeh, Hassan,Rezvani, Ali R.
, p. 2967 - 2974 (2008/10/09)
Several complexes of TPPMn-L, where TPP is the dianion of tetraphenylporphyrin and L is monoanion of 4-methylphenylcyanamide (4-Mepcyd) (1), 2,4-dimethylphenylcyanamide (2,4-Me2pcyd) (2), 3,5-dimethylphenylcyanamide (3,5-Me2pcyd) (3), 4- methoxyphenylcyanamide (4-MeOpcyd) (4), phenylcyanamide (pcyd) (5), 2-chlorophenylcyanamide (2-Clpcyd) (6), 2,5-dichlorophenylcyanamide (2,5-Cl 2pcyd) (7), 2,6-dichlorophenylcyanamide (2,6-Cl2pcyd) (8), 4-bromophenylcyanamide (4-Brpcyd) (9), and 2,3,4,5-tetrachlorophenylcyanamide (2,3,4,5-Cl4pcyd) (10), have been prepared from the reaction of TPPMnCl and thallium salt of related phenylcyanamide. Each of the complexes has been characterized by IR, UV-Vis and 1H NMR spectroscopies. 4-Methylphenylcyanamidotetraphenylporphyrin manganese(III) crystallized with one molecule of solvent CHCl3 in the triclinic crystal system and space group P1? with the following unit cell parameters of: a = 11.596(6) ?; b = 11.768(9) ?; c = 17.81(2) ?; and α, β, γ are 88.91(9)°, 88.16(7)°, 67.90(5)°, respectively; V = 2251(3) ?3; Z = 2. A total of 4234 reflections with I > 2σ(I) were used to refine the structure to R = 0.0680 and Rw = 0.2297. The Mn(III) shows slightly distorted square pyramidal coordination with the 4-methylphenylcyanamide in the axial position, coordinated from nitrile nitrogen. The reduction of each of the TPPMn-L complexes was also examined in dichloromethane and spectroelectrochemical behavior of (1) was investigated and compared to TPPMnCl.
