Blue Tetrakis(diisopropylamino)-cyclo-tetraborane and Yellow Tetrakis(tetramethylpiperidino)tetrabora-tetrahedrane

Claus-Jürgen Maier; Hans Pritzkow; Walter Siebert

doi:10.1002/(SICI)1521-3773(19990601)38:11<1666::AID-ANIE1666>3.0.CO;2-V

Blue Tetrakis(diisopropylamino)-cyclo-tetraborane and Yellow Tetrakis(tetramethylpiperidino)tetrabora-tetrahedrane

Angew Chem Int Ed Engl. 1999 Jun 1;38(11):1666-1668. doi: 10.1002/(SICI)1521-3773(19990601)38:11<1666::AID-ANIE1666>3.0.CO;2-V.

Authors

Claus-Jürgen Maier¹, Hans Pritzkow¹, Walter Siebert¹

Affiliation

¹ Anorganisch-chemisches Institut, Im Neuenheimer Feld 270, D-69120 Heidelberg (Germany), Fax: (+49) 6221-54-5609.

Abstract

The colored boranes closo-1 and cyclo-2 are obtained upon dehalogenation of sterically hindered diaminodichlorodiborane(4) 3. The TMP groups of 1 cause the formation of a tetrahedrane, whereas in 2 the diisopropylamino substituents stabilize the bent four-membered ring. TMP=2,2,6,6-tetramethylpiperidino.

Keywords: Boranes; Boron; Steric hindrance.