Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Volume 40 , Issue 10
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  • Kiyoshi Isobe
    2011 Volume 40 Issue 10 Pages 1060-1066
    Published: October 05, 2011
    Released: September 16, 2011
    JOURNALS FREE ACCESS
    Of eleven possible isomers for neutral S4, rectangular S4 has been proposed theoretically as one of the most stable forms. There has, however, been no consensus as to the S4 ground-state geometric structure despite much effort over recent years, because of the lack of direct structural information from experimental work due to lack of preparation in a pure state. The principal question is whether the ground-state geometry is rectangular D2h or open planar C2v. Our group found first rectangular S4 in coordination compounds of Rh and Ir tetranuclear complexes as a ligand and disclosed mysterious rectangular S4 by X-ray analysis and theoretical studies. Here, the newly developed chemistry of rectangular S4 complexes together with the related tetrasulfur species is introduced both from experimental and theoretical view points. In addition, more accurate argument of the principal question mentioned above is also described using results obtained from recent high-level theoretical calculations.
    Mysterious rectangular S4 complexes as well as the related tetrasulfur species are disclosed both from experimental and theoretical view points. Fullsize Image
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