Full Text Journal Articles by
Author Vardan A Hayrapetyan


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Nitric Oxide Dioxygenation by O2 Adducts of Manganese Porphyrins.

Tigran S Kurtikyan, Vardan A Hayrapetyan, Astghik A Hovhannisyan, Garik G Martirosyan, Gohar Sh Hovhannisyan, Alexei V Iretskii, Peter C Ford,

We describe here nitric oxide dioxygenation (NOD) by the dioxygen manganese porphyrin adducts Mn(Por)(η<sup>2</sup>-O<sub>2</sub>) (Por<sup>2-</sup> = the <i>meso</i>-tetra-phenyl or <i>meso</i>-tetra-<i>p</i>-tolylporphyrinato dianions, TPP<sup>2-</sup> and TTP<sup>2-</sup>). The Mn(Por)(η<sup>2</sup>-O<sub>2</sub>) was assembled by adding O<sub>2</sub> to sublimed layers of Mn<sup>II</sup>(Por). When NO was introduced and the temperature was slowly raised from 80 to 120 ... Read more >>

Inorg Chem (Inorganic chemistry)
[2020, 59(23):17224-17233]

Cited: 0 times

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Nitrosyl isomerism in amorphous Mn(TPP)(NO) solids.

Tigran S Kurtikyan, Vardan A Hayrapetyan, Garik G Martirosyan, Robert K Ghazaryan, Alexei V Iretskii, Hailiang Zhao, Kristine Pierloot, Peter C Ford,

Reaction of NO with amorphous Mn(TPP) layers gives two Mn(TPP)(NO) isomers with linear and bent Mn-N-O geometries that reversibly interconvert with changes in temperature. DFT computations predict that the linear complex is the singlet ground state while the bent structure is a triplet state. ... Read more >>

Chem Commun (Camb) (Chemical communications (Cambridge, England))
[2012, 48(99):12088-12090]

Cited: 3 times

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Nitric oxide dioxygenation reaction by oxy-coboglobin models: in-situ low-temperature FTIR characterization of coordinated peroxynitrite.

Tigran S Kurtikyan, Shahane R Eksuzyan, Vardan A Hayrapetyan, Garik G Martirosyan, Gohar S Hovhannisyan, John A Goodwin,

The oxy-cobolglobin models of the general formula (NH(3))Co(Por)(O(2)) (Por = meso-tetra-phenyl and meso-tetra-p-tolylporphyrinato dianions) were constructed by sequential low temperature interaction of NH(3) and dioxygen with microporous layers of Co-porphyrins. At cryogenic temperatures small increments of NO were introduced into the cryostat and the following reactions were monitored by the ... Read more >>

J Am Chem Soc (Journal of the American Chemical Society)
[2012, 134(33):13861-13870]

Cited: 13 times

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