Related Experiment Video
Updated: Jun 5, 2026

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
1-Methyl-1-azonia-3,5-diaza-7-phosphatricyclo-[3.3.1.1]decane tetra-fluoro-borate
Abstract:
The title compound, C(7)H(15)N(3)P(+)·BF(4) (-) or [PTA-Me][BF(4)], is the N-methyl-ated derivative of the well known water-soluble amino-phosphine 1,3,5-triaza-7-phosphaadamantane (PTA). The asymmetric unit consists of a cage-like cation [PTA-Me](+) and a disordered tetra-fluoro-borate anion; two F atoms are disordered equally over two sites. A network of weak inter-molecular C-H⋯F hydrogen bonds results in a three-dimensional supra-molecular assembly.
Related Concept Videos
Nomenclature of Aryl and Heterocyclic Amines
Hydroboration-Oxidation of Alkenes
Hybridization of Atomic Orbitals I
Carboxylic Acids to Methylesters: Alkylation using Diazomethane
VSEPR Theory and the Basic Shapes
Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene

