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Using U (2) algebraic model Hamiltonian the resonance Raman spectra of Oxygen bridged iron porphyrin dimers (OEPFe)2O and (OEPFe)2N calculated for selected some vibrational modes. Using this model the Hamiltonian so con-structed, we have calculated vibrational energy levels of (OEPFe)2O and (OEPFe)2N accuractly

Vibrational spectra of oxygen and nitrogen-bridged iron octaethylporphyrin dimers by an U(2) algebraic