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The Distinct Effect of the o ‐Carboranyl Fragment: Its Influence on the I−I Distance in R 3 PI 2 Complexes
Author(s) -
Teixidor Francesc,
Núñez Rosario,
Viñas Clara,
Sillanpää Reijo,
Kivekäs Raikko
Publication year - 2000
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20001201)39:23<4290::aid-anie4290>3.0.co;2-3
Subject(s) - fragment (logic) , chemistry , charge (physics) , bond length , carborane , bond , stereochemistry , crystallography , physics , computer science , crystal structure , quantum mechanics , algorithm , finance , economics
The shortest I−I distance in R 3 PI 2 chemistry has been found by exploiting the electron‐withdrawing capacity of the o ‐carboranyl fragment “RC 2 B 10 H 10 ”. The geometry of (1‐P i Pr 2 ‐2‐Me‐1,2‐C 2 B 10 H 10 )⋅I 2 is interpreted as a molecular charge‐transfer “spoke” structure (see picture). It is shown that the I−I bond in R 3 P‐I‐I can be varied in a continuous way, which poses a challenge to the concept of a bond.