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Insertion of Carbon Dioxide into Main‐Group Complexes: Formation of the [N(CO 2 ) 3 ] 3− Ligand
Author(s) -
Dickie Diane A.,
Parkes Marie V.,
Kemp Richard A.
Publication year - 2008
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/anie.200804218
Subject(s) - ligand (biochemistry) , cleave , chemistry , carbon dioxide , group (periodic table) , carbamate , medicinal chemistry , stereochemistry , organic chemistry , receptor , biochemistry , enzyme
Under mild conditions CO 2 reacts with [Sr{N(PPh 2 ) 2 } 2 ](THF) 3 to oxidatively cleave PPh 2 groups, resulting in the new ligand [N(CO 2 ) 3 ] 3− in [Sr 6 {O 2 CN(PPh 2 ) 2 } 6 {N(CO 2 ) 3 } 2 ] (see core structure; Sr green, O red, N blue, C black). The Sr 6 framework chemically fixates twelve equivalents of CO 2 , half by the formation of two [N(CO 2 ) 3 ] 3− ligands and the other half by CO 2 insertion to form the unprecedented phosphanyl‐substituted carbamate ligand O 2 CN(PPh 2 ) 2 .