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Water Adsorption on Platinum Dioxide and Dioxygen Complex: Matrix Isolation Infrared Spectroscopic and Theoretical Study of Three PtO 2 –H 2 O Complexes
Author(s) -
Gong Yu,
Zhou Mingfei
Publication year - 2010
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201000104
Subject(s) - matrix isolation , chemistry , platinum , molecule , infrared spectroscopy , hydrogen bond , adsorption , crystallography , photochemistry , inorganic chemistry , catalysis , organic chemistry
The interactions of water molecule with platinum dioxygen complex and dioxide molecule are investigated by means of matrix isolation infrared spectroscopy and density functional calculations. The platinum atoms reacted with dioxygen to form the previously reported Pt(O 2 ) complex. The Pt(O 2 ) complex reacted with water molecule to give the Pt(O 2 )–H 2 O complex, which was characterized to involve hydrogen bonding between one O atom of Pt(O 2 ) and one H atom of H 2 O (structure A ). Upon visible light irradiation, the hydrogen bonded Pt(O 2 )⋅⋅⋅HOH complex rearranged to another Pt(O 2 )–H 2 O isomer (structure B ), which involves (O 2 )Pt⋅⋅⋅OH 2 interaction. The Pt(O 2 )–H 2 O complex in structure B can be isomerized to the weakly bound platinum dioxide‐water complex (structure C ) under UV irradiation.