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Structure and Color of Pentaphenylbismuth
Author(s) -
Schmuck Arno,
Buschmann Jürgen,
Fuchs Joachim,
Seppelt Konrad
Publication year - 1987
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198711801
Subject(s) - pyramid (geometry) , basal plane , square pyramid , crystallography , bismuth , square (algebra) , chemistry , materials science , stereochemistry , optics , crystal structure , physics , geometry , mathematics , organic chemistry
A violet color and strong dichroism are very unusual features for a compound of a main‐group element. The X‐ray structure analysis performed at −96°C reveals that Bi(C 6 H 5 ) 5 , synthesized earlier by Wittig et al., may be described as a square pyramid and is thus very similar to the (colorless!) Sb(C 6 H 5 ) 5 . Optical investigations showed that excitation occurs in the basal plane of the square pyramid. A charge‐transfer transition from a ligand to the bismuth atom was proposed.