1. Summers, M.F., Toscano, P.J., Bresciani-Pahor, N., Nardin, G., Randaccio, L., Marzilli, L.G. "A Very Long Cobalt to Nitrogen Bond in a Coenzyme B12 Model. Relevance to the Role of the 5,6-Dimethylbenzimidazole in Co-C Bond Cleavage in Coenzyme B12," J. Am. Chem. Soc. 105, 6259 (1983).

2. Bresciani-Pahor, N., Randaccio, L., Summers, M.F., Toscano, P.J. "Structural Distortions in Alkylcobaloximes Containing Triphenylphosphine as Axial Ligand. The X-Ray Structures of trans-Bis(dimethylglyoximato)(bromo-methyl) (triphenylphosphine)cobalt(III) and trans-Bis(dimethyl-glyoximato)-(cyanomethyl) (triphenylphosphine)cobalt(III)," Inorg. Chim. Acta, 68, 69 (1983).

3. Marzilli, L.G., Summers, M.F., Ramsden, J.H., Bresciani-Pahor, N., Randaccio, L. "Synthesis, Structure and Solution Behavior of trans-Bis- (dimethylglyoximato)(ethyl) (4-methylpyridylimidate)cobalt(III)," J. Chem. Soc. Dalton Trans., 511 (1984).

4. Summers, M.F., Marzilli, L.G. "Observation of Distinct Cadmium-113 NMR Signals for Complexes of N-Donor Ligands in Solution at Ambient Temperature," Inorg. Chem., 23, 512 (1984).

5. Summers, M.F., Marzilli, L.G., Bresciani-Pahor, N., Randaccio, L. "Unusual Bond Lengths, Conformations, and Ligand Exchange Rates in B12 Models with the Bis(salicylidine)-o-phenylenediamine Equatorial Ligand," J. Am. Chem. Soc., 106, 4478 (1984).

6. Bauman, G.C., Summers, M.F., Hutchinson, J.P. Zubietta, J., Marzilli, J.G. "Preparation of a New Ligand Containing Disulfide and Imidazole Donor Groups. Structure of Dibromo[5-(1,2,5-dithiazepan-5-ylmethylene) -4-methyl-2-ethylimidazole]cadmium(II). 113Cd and 13C NMR Studies of Complex Formation," Inorg. Chem., 23, 3104 (1984).

7. Randaccio, L., Bresciani-Pahor, N., Orbell, J.D., Calligaris, M., Summers, M.F., Snyder, B., Toscano, P.J., Marzilli, J.G. "Correlation of Rate, Spectroscopic and Structural Data for (L)bis(dimethylglyoximato)-organocobalt complexes, where L = Pyridine or Triphenylphosphine," Organometallics, 4, 469 (1985).

8. Rossi, M., Glusker, J.P., Randaccio, L., Summers, M.J., Toscano, P.J., Marzilli, L.G. "The Structure of a B12 Coenzyme: Methylcobalamin Studies by X-ray and NMR Methods," J. Am. Chem. Soc., 107, 1729 (1985).

9. Bresciani-Pahor, N., Forcolin, M., Marzilli, L.G., Randaccio, L., Summers, M.F., Toscano, P.J. "Organocobalt B12 Models: Axial Ligand Effects of the Structural and Coordination Chemistry of Cobaloximes," Coord. Chem. Revs., 63, 1 (1985).

10. Marzilli, L.G., Summers, M.F., Bresciani-Pahor, N., Zangrando, E., Charland, J.P., Randaccio, L. "Rare Examples of Structurally Characterized Five-Coordinate Organocobalt Complexes. Novel Dynamic NMR Evidence For Synergistic Enhancement of Cis and Trans Effects in B12 Models," J. Am. Chem. Soc., 107, 6880 (1985).

11. Bresciani-Pahor, N., Calligaris, M., Randaccio, L., Marzilli, L.G., Summers, M.F., Toscano, P.J., Grossman, J., Liotta, D. "The 2,2,2-Trifluoreothyl Ligand: A Structural "Reporter" Group for Its Carbanion Character in Organometallic Compounds," Organometallics, 4, 630 (1985).

12. Bresciani-Pahor, N., Randaccio, L., Zangrando, E., Summers, M.F., Ramsden, J., Marzilli, P., Marzilli, L.G. "Organocobalt B12 Models with Very Long Co-C (tertiary) Bonds. Synthesis, Spectroscopic, Kinetic, and Structural Properties of trans-Bis(dimethylglyoximato)- (adamantyl)(L)Co(III) with L = Trimethylphosphite and Triisopropylphosphite," Organometallics, 4, 2086 (1985).

13. Summers, M.F., Andrew Byrd, R., Gallo, K.A., Samson, C.J., Zon, G., Egan, W. "Nuclear Magnetic Resonance Studies of the Duplex-Single Stranded Hairpin Loop Equilibrium for the Oligodeoxyribonucleotide Sequence d(CGCGATTCGCG)," Nucl. Acids Res., 13, 6375 (1985).

14. Zon, G., Gallo, K.A., Samson, C.J., Shao, K., Summers, M.F., Byrd, R.A. "Analytical Studies of Mixed Sequence Oligodeoxyribonucleotides Synthesized by Competitive Coupling of either Methyl- or b-Cyanoethyl-N,N-diisopropylamino Phosphoramidite Reagents," Nucl. Acids. Res., 13, 8181 (1985).

15. Marzilli, L.G., Parker, Jr., W.O., Charland, J.P., Summers, M.F. "Relevance of Organocobalt B12 Models to B12 Biochemistry", in "Frontiers in Bioinorganic Chemistry," A. V. Xavier, Ed., VCH: Fed. Republic of Germany, p. 647 (1986).

16. Byrd, R.A., Summers, M.F., Fouts, C.S., Marzilli, L.G. "A New Approach for Assigning 31P Signals and Correlating Adjacent Nucleotide Moieties via 1H Detected Multiple Quantum NMR. Application to the Adduct of d(TGGT) with the Anti-Cancer Agent, Pt(ethylenediamine)Cl2," J. Am. Chem. Soc., 108, 504 (1986).

17. Bax, A., Summers, M.F. "1H and 13C Assignments from Sensitivity Enhanced Detection of Heteronuclear Multiple Bond Connectivity by 2D Multiple Quantum NMR," J. Am. Chem. Soc., 108, 2093 (1986).

18. Marzilli, L.G., Summers, M.F., Zangrando, E., Bresciani-Pahor, N., Randaccio, L. "Unusually Detailed Insight into the Dynamic Behavior of Coordinated Ambidentate Ligands. Factors Influencing the Binding Mode of 2-Aminopyridines in B12 Models," J. Am. Chem. Soc., 108, 4830 (1986).

19. Summers, M.F., van Rijn, J., Reedijk, J., Marzilli, L.G. "Unusual Slow-Exchange 113Cd NMR Spectra Observed at Ambient Temperature for Halide, Cyanide, and Mercaptide Cadmium Coordination Compounds with Benzimidazole Ligands. Applications to Cd-Substituted Metalloproteins," J. Am. Chem. Soc., 108, 4285 (1986).

20. Summers, M.F., Bax, A., Marzilli, L.G. "Complete 1H and 13C Assignment of Coenzyme B12 Through the Use of New Two-Dimensional NMR Experiments," J. Am. Chem. Soc., 108, 4285 (1986).