Hexacoordinate oxy-globin models Fe(Por)(NH3)(O2) react with NO to form only the nitrato analogs Fe(Por)(NH3)(η1-ONO2), even at ~100 K.
The oxy-globin models Fe(Por)(NH(3))(O(2)), prepared by sequential reactions of O(2) ((18)O(2)) and NH(3) with thin porous layers of Fe(II)(Por), react with NO ((15)NO) at 80-100 K to form only the low-spin nitrato complexes Fe(Por)(NH(3))(η(1)-ONO(2)), thus implying that peroxynitrite intermediates, if formed, must undergo very facile isomerization to the nitrato analog.
Kurtikyan
Tigran S
TS
Molecule Structure Research Centre (MSRC) of the Scientific and Technological Centre of Organic and Pharmaceutical Chemistry, National Academy of Sciences, 375014, Yerevan, Armenia. kurto@netsys.am
Ford
Peter C
PC
D040761:Biomimetic Materials / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D005296:Ferrous Compounds / Q000737:chemistry*; D006454:Hemoglobins; D009569:Nitric Oxide / Q000737:chemistry*; D030421:Peroxynitrous Acid / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature
D005290:Ferric Compounds; D005296:Ferrous Compounds; D006454:Hemoglobins; C402601:hemoglobin glutamer-200; D030421:Peroxynitrous Acid; D009569:Nitric Oxide