Norbornadiene-Quadricyclane Valence Isomerism for a Tetraphosphorus Derivative The Netherlands Organization for Scientific Research (NOW/CW) is acknowledged for partial support (A.L.S., M.L., K.L.), as are the NSERC of Canada for a scholarship (S.B.C.), and EPSRC for funding phosphaorganometallic chemistry at Sussex University (J.F.N.). Dr. H. Zappey is thanked for the HR-MS spectra and J. C. Slootweg for his initiative
Angew Chem Int Ed Engl. 2001 Dec 3;40(23):4412-4415.
doi: 10.1002/1521-3773(20011203)40:23<4412::aid-anie4412>3.0.co;2-i.