Redox Properties of Ruthenium Nitrosyl Porphyrin Complexes with Different Axial Ligation: Structural, Spectroelectrochemical (IR, UV-Visible, and EPR), and Theoretical Studies. Inorganic Chemistry, (47)16:7106--7113, 2008. [PUMA: porphyrin reaction study electrochem complex redox tetraphenylporphyrin effect;spectroelectrochem ligand ruthenium nitrosyl axial effect ligation]