Opening book details…
Can I read O,N-Chelated boron aminophenolate complexes. Crystal structure of BPh2(OC6H4(CH2NMe2)-2) on EtoBox?
O,N-Chelated boron aminophenolate complexes. Crystal structure of BPh2(OC6H4(CH2NMe2)-2) by Henk Hagen; Santiago Reinoso; Martin Albrecht; Jaap Boersma; Anthony L Spek; Gerard van Koten is a Chemistry article available to read on EtoBox.
What is O,N-Chelated boron aminophenolate complexes. Crystal structure of BPh2(OC6H4(CH2NMe2)-2) about?
Two diphenylboron ortho-aminophenolate complexes, [BPh 2 (OC 6 H 4 (CH 2 NMe 2 )-2)] ( 2) and [BPh 2 (OC 6 H 2 (CH 2 NMe 2 ) 2 -2,6-Me-4)] ( 6), have been prepared in a one-pot procedure approach starting from B(OMe) 3 . The starting material was reacted with two equivalents of phenylmagnesium bromide, followed by hydrolysis with HCl. The resulting borinic acid, BPh 2 (OH), was reacted with either HOC 6 H 4 (CH 2 NMe 2 )-2 or HOC 6 H 2 (CH 2 NMe 2 ) 2 -2,6-Me-4 to give 2 or 6, respectively. An X-ray structure determination of 2 showed it to be a four-coordinate boron compound with a tetrahedral coordination geometry. The six-membered chelate ring in 2 is puckered. Variable temperature 1 H-NMR analysis of 6 showed the existence of two dynamic processes in solution, i.e. one process involving flipping of the puckered chelate ring conformation (DG ‡ = 41 kJ mol -1 ) and a second, higher energy, process (DG ‡ =65 kJ mol -1 ) in which exchange of coordinated and non-coordinated amine functions occurs. The exchange is (at least partly) assisted intermolecularly.
Who reads O,N-Chelated boron aminophenolate complexes. Crystal structure of BPh2(OC6H4(CH2NMe2)-2)?
It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- Henk Hagen; Santiago Reinoso; Martin Albrecht; Jaap Boersma; Anthony L Spek; Gerard van Koten
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-328X)
- Published
- 2000
- Language
- EN
- Field
- Chemistry (Physical Sciences)