¹⁰B-, ¹¹B-, ¹³C-NMR-Untersuchungen von closo-Pentaalkyl-1.5-dicarbapentaboranen(5) / ¹⁰B-, ¹¹B-, ¹³C NMR Studies of closo-Pentaalkyl-1,5-dicarbapentaboranes(5)

Open Access

1 June 1981

journal article
Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B

Vol. 36 (6) , 704-707
https://doi.org/10.1515/znb-1981-0610

Abstract

NMR parameters [chemical] shifts (δ¹¹B, δ¹³C) and coupling constants (¹J(¹³C¹H), ¹J(¹³C¹¹B), ¹J(¹³C¹³C), ¹J(¹¹B¹¹B) of closo-pentaalkyl-1,5-dicarbapentaboranes(5) were determinated by ¹⁰B, ¹¹B, and ¹³C NMR spectroscopy. The magnitudes of ¹J(¹³C¹¹B) and ¹J(¹³C¹³C) correspond to ¹J(¹¹B¹H), ¹J(¹³C¹¹B) and ¹J(¹³C¹H) in the parent compound 1,5-C₂B₃H₅. According to predictions from MO calculations ¹J(¹¹B¹¹B) was found to be < 10 Hz. Together with these data the δ¹¹B and δ¹³C values show that neither the structure nor the bonding situation in the polyhedron are significantly affected by alkyl substitution.

Keywords

This publication has 0 references indexed in Scilit:

10B-, 11B-, 13C-NMR-Untersuchungen von closo-Pentaalkyl-1.5-dicarbapentaboranen(5) / 10B-, 11B-, 13C NMR Studies of closo-Pentaalkyl-1,5-dicarbapentaboranes(5)

Abstract

Keywords

¹⁰B-, ¹¹B-, ¹³C-NMR-Untersuchungen von closo-Pentaalkyl-1.5-dicarbapentaboranen(5) / ¹⁰B-, ¹¹B-, ¹³C NMR Studies of closo-Pentaalkyl-1,5-dicarbapentaboranes(5)