Bonding in the Heavy Analogue of Hydrogen Cyanide: The Curious Case of Bridged HPSi

Authors

  • Valerio Lattanzi Dr.,

    1. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (USA)
    2. School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138 (USA), Fax: (+1) 617-495-7013
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  • Sven Thorwirth Dr.,

    1. I. Physikalisches Institut, Universität zu Köln, 50937 Köln (Germany)
    2. Max Planck Institut für Radioastronomie, 53121 Bonn (Germany)
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  • DeWayne T. Halfen Dr.,

    1. Departments of Chemistry and Astronomy and Steward Observatory, University of Arizona, Tucson, AZ 85721 (USA)
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  • Leonie Anna Mück Dipl.-Chem.,

    1. Institut für Physikalische Chemie, Universität Mainz, 55099 Mainz (Germany), Fax: (+49) 6131-39-23895
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  • Lucy M. Ziurys Prof.,

    1. Departments of Chemistry and Astronomy and Steward Observatory, University of Arizona, Tucson, AZ 85721 (USA)
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  • Patrick Thaddeus Prof.,

    1. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (USA)
    2. School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138 (USA), Fax: (+1) 617-495-7013
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  • Jürgen Gauss Prof. Dr.,

    1. Institut für Physikalische Chemie, Universität Mainz, 55099 Mainz (Germany), Fax: (+49) 6131-39-23895
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  • Michael C. McCarthy Dr.

    1. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (USA)
    2. School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138 (USA), Fax: (+1) 617-495-7013
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  • Financial support for the work in Cambridge and Tucson is provided by the National Science Foundation (NSF) Center for Chemical Innovation (CCI) grant CHE 08-47919. D.T.H. is supported by a NSF Astronomy and Astrophysics Post-doctoral Fellowship (AST 06-02282). S.T. and J.G. gratefully acknowledge funding by the Deutsche Forschungsgemeinschaft (DFG) through grants TH1301/3-1 and GA370/5-1. L.A.M. is supported by a fellowship by the Graduate School of Excellence “MAINZ”.

Abstract

original image

Curiouser and curiouser: By combining high-resolution molecular spectroscopy in the centimeter and millimeter wave regions, and high-level coupled-cluster quantum-chemical calculations, the structure of the HPSi molecule has been determined. The bridged geometry of HPSi is in remarkable contrast to that of the C and/or N analogues, such as HCN/HNC, HCP, and HNSi, which are all linear.

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