Kinetic Stabilization of Primary Hydrides of Main Group Elements. The Synthesis of an Air-Stable, Crystalline Arsine and Silane

Inorg. Chem., 42 (21), 6586 -6588, 2003. 10.1021/ic034367r S0020-1669(03)04367-2
Web Release Date: September 20, 2003

Kinetic Stabilization of Primary Hydrides of Main Group Elements. The Synthesis of an Air-Stable, Crystalline Arsine and Silane

Marcin Brynda,* Gérald Bernardinelli, Cosmina Dutan, and Michel Geoffroy*

Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, and Department of Physical Chemistry, University of Geneva, 30 quai Ernest Ansermet, 1211 Geneva, Switzerland

Received April 3, 2003

Abstract:

Two new, "user-friendly" derivatives of triptycene containing AsH₂ and SiH₃ fragments were synthesized. Both solids are crystalline, air-stable compounds characterized by elevated melting points and resistance toward moisture. The highly reactive As-H and Si-H bonds are protected by the presence of the surrounding phenylene hydrogen atoms, which ensure a remarkable kinetic stabilization of these primary hydrides. After X-ray irradiation of a single crystal of triptycenesilane, a persistent silyl radical was trapped and characterized.

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