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Nicole Holzmann, Deepak Dange, Prof. Dr. Cameron Jones and Prof. Dr. Gernot Frenking Dinitrogen as Double Lewis Acid: Structure and Bonding of Triphenylphosphinazine N2(PPh3)2 Angewandte Chemie International Edition 52

Version of Record online: 4 FEB 2013 | DOI: 10.1002/anie.201206305

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Making Ns meet: Triphenylphosphinazine N2(PPh3)2 is a donor–acceptor complex between nitrogen in the highly excited 1Γg state and two anti-periplanar coordinated phosphine ligands (see structure). Although the dissociation into N2+2 PPh3 is calculated to be exergonic by 75 kcal mol−1, the compound is kinetically very stable as a result of the very large Lewis acidity of N2 in the excited 1Γg state.

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