MALDI-TOF Mass Spectrometry of Nanosized MoO2. Structure and Relative Stability of Isomers of Lower Molybdenum Oxide Cations

• Published in: Russian journal of inorganic chemistry Vol. 63; no. 4; pp. 492 - 502
• Main Authors: Il’in, E. G., Beirakhov, A. G., Yarzhemsky, V. G., Gekhman, A. E., Buryak, A. K.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 2018; Springer Nature B.V
• Subjects: Cations; Chemistry; Chemistry and Materials Science; Clusters; Inorganic Chemistry; Ions; Isomers; Mass spectrometry; Molecular orbitals; Molybdenum; Molybdenum oxides; Physical Methods of Investigation; Structural stability
• ISSN: 0036-0236; 1531-8613
• DOI: 10.1134/S0036023618040113

MALDI-TOF was used to study molybdenum dioxide (MoO
2
) containing a nanosized fraction. The composition of cationic clusters of nonstoichiometric lower molybdenum oxides in the gas phase was determined, and the thermodynamic stabilities and configurations of isomers were calculated for selected symmetric molecular structures and for cations MoSO
8
+
and Mo
5
O
9
+
. Molecular orbital analysis was performed for two trigonal-bipyramidal clusters Mo
5
O
8
and Mo
5
O
9
. Changes in molybdenum–molybdenum interatomic distances in going from MoO
8
+
and Mo
5
O
9
+
cations to neutral clusters are discussed.