Pentagon Stability in Cycloarsanes

The orbital phase theory leads to the prediction that the saturated arsenic cyclic molecules prefer pentagons, which is substantiated by the negative strain energy of cyclic As 5 H 5 . The puckered five-membered arsenic ring is an important structural unit for the pentagon stability. Possible struct...

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Bibliographic Details
Published inPhosphorus, sulfur, and silicon and the related elements Vol. 177; no. 6-7; pp. 1705 - 1708
Main Authors Ma, Jing, Hozaki, Atsushi, Inagaki, Satoshi
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.06.2002
Subjects
Arsenic Ring Compounds
Orbital Phase
Strain Energy
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Summary:The orbital phase theory leads to the prediction that the saturated arsenic cyclic molecules prefer pentagons, which is substantiated by the negative strain energy of cyclic As 5 H 5 . The puckered five-membered arsenic ring is an important structural unit for the pentagon stability. Possible structures and conformers of polycycloarsanes As 8 H 4 , As 11 H 3 , "roof-like" and "cage-like" As 12 H 4 , As 13 H 3 , As 14 H 2 , and As 15 H 3 with relatively low strain energies were predicted due to many puckered pentagon units in them. The low stability of the dodecahedron As 20 with 12 planar pentagon units was suggested by the high strain energy.
ISSN:1042-6507
1563-5325
DOI:10.1080/10426500212314