The Nature of Chalcogen‐Bonding‐Type Tellurium–Nitrogen Interactions: A First Experimental Structure from the Gas Phase
Timo Glodde, Yury V. Vishnevskiy, Lars Zimmermann, Hans‐Georg Stammler, Beate Neumann, Norbert W. Mitzel
Abstract
Abstract (C 6 F 5 )Te(CH 2 ) 3 NMe 2 ( 1 ), a perfluorophenyltellurium derivative capable of forming intramolecular N⋅⋅⋅Te interactions, was prepared and characterized. The donor‐free reference substance (C 6 F 5 )TeMe ( 2 ) and the unsupported adduct (C 6 F 5 )(Me)Te⋅NMe 2 Et ( 2 b ) were studied in parallel. Molecular structures of 1 , 2 and 2 b were determined by single‐crystal X‐ray diffraction and for 1 and 2 by gas‐phase electron diffraction. The structure of 1 shows N⋅⋅⋅Te distances of 2.639(1) Å (solid) and 2.92(3) Å (gas). Ab initio plus NBO and QTAIM calculations show significant charge transfer effects within the N⋅⋅⋅Te interactions and indicate σ‐hole interactions.