Die Kristall‐ und Molekülstruktur von \documentclass{article}\pagestyle{empty}\begin{document}$ \mathop {\rm P}\limits^ + {\rm CH}_2 {\rm \bar BH}_3 $\end{document}

The Crystal and Molecular Structure of \documentclass{article}\pagestyle{empty}$ \mathop {\rm P}\limits^ + {\rm CH}_2 {\rm \bar BH}_3 $ The zwitterionic molecule (CH₃)₃\documentclass{article}\pagestyle{empty}$ \mathop {\rm P}\limits^ + {\rm CH}_2 {\rm \bar BH}_3 $ crystallizes orthorhombicly, space group Pna2₁. While the CH₃ groups in (CH₃)₃PCH₂ are bent away from the ylidic function, this strain is relieved in the adduct towards tetrahedral angles. The PCH₂ bond distance is elongated on BH₃‐addition from a double bond value of 164 to a single bond distance of 175.6 pm.