Infrared spectrum of the disilane cation (Si2H6+) from Ar-tagging spectroscopy.

作者: Marco Savoca , Martin Andreas Robert George , Judith Langer , Otto Dopfer

DOI: 10.1039/C2CP43773B

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摘要: The infrared spectrum of the disilane cation, Si2H6+, in its 2A1g ground state is inferred from photodissociation cold Si2H6+–Arn complexes (n = 1, 2). Vibrational analysis consistent with a D3d symmetric structure H3SiSiH3+ generated by ionization bonding σSiSi orbital. Structural, vibrational, and electronic properties Si2H6(+) Si2H6+–Ar1,2 are determined at MP2/aug-cc-pVTZ B3LYP/aug-cc-pVTZ levels. Ar ligands bind weakly C3 axis on opposite sides to Si2H6+ only minor impact properties. calculations reveal low-energy H2SiHSiH3+ isomer Cs symmetry Si–H–Si bridge, which ∼15 kJ mol−1 above structure.

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