Insights into the Topology and the Formation of a Genuine pp? Bond: Experimental and Computed Electron Densities in Monoanionic Trichlorine [Cl₃ ].

ABSTRACT: So far, several publications have discussed the bonding concepts in polyhalides on a theoretical basis. In particular, the trichlorine monoanion is of great interest because its structure should be symmetrical and show two equidistant Cl-Cl bonds. However, apart from matrix-isolation studies, only asymmetric trichlorine anions have been reported so far. Herein, the trichlorine monoanions in 2-chloroethyltrimethylammonium trichloride [NMe₃ EtCl][Cl₃ ], 1, tetramethylammonium trichloride [NMe₄ ][Cl₃ ], 2, and tetrapropylammonium trichloride [NnPr₄ ][Cl₃ ], 3, are analysed. High-resolution X-ray structures and experimental charge density analyses supported by periodic quantum-chemical calculations provide insight into the influence of the crystalline environment on the structure of these [Cl₃ ]^- anions as well as into the progress of the bond formation between a dichlorine molecule and a Cl^- anion.

SUBMITTER: Keil H 

PROVIDER: S-EPMC7898528 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature