1. Allen, A.D. & Bottomley, F. (1968) ‘Fixation of atmospheric nitrogen by ruthenium compounds’. Can. J. Chem. 46, 469.
2. Allen, A.D. & Senoff, C.V. (1965) ‘Nitrogen pentaammineruthenium(II) complexes’. J. Chem. Soc. Chem. Comm., 621–622.
3. Anderson, S.N., Richards, R.L. & Hughes, D.L. (1982) ‘Preparation and crystal structure of [{W(N2)2(PEt2Ph)3}3N2]’. J. Chem. Soc. Chem. Comm., 1291–1292.
4. Baumann, J.A. & George, T.A. (1980) ‘Formation of ammonia by protonation of a molybdenum-dinitrogen complex and isolation and characterisation of the molybdenum-containing product’. J. Am. Chem. Soc. 102, 6153–6154.
5. Bulen, W.A. (1976) ‘Nitrogenase from Azotobacter vinelandii and reactions affecting mechanistic interpretations’. In Proc. 1st Int. Symp. on Nitrogen Fixation (eds. W.E. Newton & C.J. Nyman) Washington State Univ. Press, Pullman, Wash., pp. 177–186.