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Norbornadiene–Quadricyclane Valence Isomerism for a Tetraphosphorus Derivative
Author(s) -
Vlaar Mark J. M.,
Ehlers Andreas W.,
Schakel Marius,
Clendenning Scott B.,
Nixon John F.,
Lutz Martin,
Spek Anthony L.,
Lammertsma Koop
Publication year - 2001
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(20011203)40:23<4412::aid-anie4412>3.0.co;2-i
Subject(s) - quadricyclane , norbornadiene , ab initio , valence (chemistry) , phosphorus , chemistry , computational chemistry , derivative (finance) , organic chemistry , catalysis , financial economics , economics
Phosphorus changes stability : Investigation of the phosphorus polycycles 1 and 2 , prepared according to Equation (1), show that the relative stability of the norbornadiene and quadricyclane frameworks is inverted when four of the framework carbon atoms are replaced by phosphorus atoms. These organophosphorus compounds can be isolated at room temperature but are in equilibrium at elevated temperatures. The experimental findings are in agreement with the results of ab initio MO theory calculations.