[(BH2)6S4]2−, [(BH2)6Se4]2−: neue Chalcogenoborwasserstoff-Anionen mit Adamantanstruktur

✍ Scribed by Binder, Herbert ;Loos, Helge ;Dermentzis, Konstantinos ;Borrmann, Horst ;Simon, Arndt

• Publisher: Wiley (John Wiley & Sons)
• Year: 1991
• Tongue: English
• Weight: 504 KB
• Volume: 124
• Category: Article
• ISSN: 0009-2940
• DOI: 10.1002/cber.19911240304

✦ Synopsis

Chalcogenoboron hydride structure 1 Adamantane ~ ~ ~~ ______ ~ ~~ [(BH6)&]*-. [[BH2)&e,l2-: New Chalcogenoboron Hydride Anions with Adamantane Structure The reaction of THF . BH3/NaBH4 (2: 1) with H2S produces yields 4a and polymers. 3a and 4a react with CsBr to form the Na[H3B-p2-S(B2H,)] (5) with hydrogen evolution. 5 reacts with crystalline compounds Cs,[(BH&S,] . CsBr (3 b) and Cs2an excess of H2S to give Na2[(BH2)&] (3a), which is also [(BH2)6Se4] . CsBr (4b), characterized by X-ray structure deterformed in the reaction of THF . BH3 with NaSH or anhydrous minations. The anions of 3 b and 4 b consist of an adamantane Na,S. These reactions proceed via 5 and the intermediates 7 skeleton. The Brion is octahedrally coordinated by Cs+ ions. or 8 by loss of BH, and cyclization. The analogous compound The Cs6Br octahedra share faces to form columns along the Na2[(BH2)bSe4] (4a) is obtained by the reaction of elemental hexagonal c axis. The crystal structures of the isotypic comselenium with NaBH, (1: 1) in triglyme. The primary product pounds 3b and 4b are closely related to the structure of is Na2[H3B -Se -Se -BH,] (9). Treatment of 9 at 100 -110°C CsNiC1,.