Patents by Inventor Mark A. Toft

Mark A. Toft has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Preparation of decaborane (14) through hydride ion abstraction reactions
    Patent number: 4338289
    Abstract: Disclosed is a method for the preparation of decaborane-14(B.sub.10 H.sub) in high yields from B.sub.5 H.sub.9 which involve three basic procedure steps as follows:(1) conversion of B.sub.5 H.sub.9 to a solid, [N(CH.sub.3).sub.4 ][B.sub.9 H.sub.14 ], by reacting NaH in a tetrahydrofuran (THF) solution in the presence of [N(CH.sub.3).sub.4 ][Cl];(2) performing a hydride abstraction on the solid after removal of THF by reacting, while stirring, a boron trihalide selected from BBr.sub.3 and BCl.sub.3 to form B.sub.10 H.sub.14 ; and,(3) separating the B.sub.10 H.sub.14 from the solid reaction mixture by a sublimation procedure.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: July 6, 1982
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Sheldon G. Shore, Mark A. Toft, Francis L. Himpsl