Isotopically-enriched boranes and methods of preparing them

Details Isotopically-enriched boranes and methods of preparing them Isotopically-enriched boranes and methods of preparing them

2011-06-07

2011-06-07

Langel, Wayne (Department: 1736)

Chemistry of inorganic compounds

Boron or compound thereof

Binary compound

Reexamination Certificate

active

07955580

ABSTRACT:
The invention provides new methods for synthesis of large boron hydride clusters e.g., boron hydride molecules of the formula BnHmwhere 5≦n≦96 and m≦n+8, wherein m and n satisfy the electron counting rules of macropolyhedral boranes. The invention is particularly useful for synthesis of octadecaborane (B18H22). Preferred methods of the invention include iteratively generating a conjugate acid from a salt of the [BaHb]c−or [Bn+2Hm−4]2−anion followed by degradation under conditions conducive to concentrating and drying of the conjugate acid to provide a borane BnHmand residual salt of the [BaHb]c−or [Bn+2Hm−4]2−anion which is reused in the method of synthesis. The invention further provides isotopically enriched boranes, particularly isotopically enriched10B18H22and11B18H22.

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