Copyright © 2009 Awni Khatib et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

1. L. Pickart, W. H. Goodwin, W. Burgua, T. B. Murphy, and D. K. Johnson, “Inhibition of the growth of cultured cells and an implanted fibrosarcoma by aroylhydrazone analogs of the Gly-His-Lys-Cu(II) complex,” Biochemical Pharmacology, vol. 32, no. 24, pp. 3868–3871, 1983. View at Publisher · View at Google Scholar
2. P. Zanello, S. Tamburini, P. A. Vigato, and G. A. Mazzocchin, “Syntheses, structure and electrochemical characterization of homo- and heterodinuclear copper complexes with compartmental ligands,” Coordination Chemistry Reviews, vol. 77, no. 4, pp. 165–273, 1987. View at Publisher · View at Google Scholar
3. G. D. Whitener, J. R. Hagadorn, and J. Arnold, “Synthesis and characterization of a new class of chelating bis(amidinate) ligands,” Journal of the Chemical Society, Dalton Transactions, no. 8, pp. 1249–1256, 1999. View at Publisher · View at Google Scholar
4. L. Que, Jr. and A. E. True, “Dinuclear iron- and manganese-oxo sites in biology,” in Progress in Inorganic Chemistry, vol. 38, pp. 97–200, John Wiley & Sons, New York, NY, USA, 1990. View at Publisher · View at Google Scholar
5. E. Colacio, M. Ghazi, R. Kivekäs, and J. M. Moreno, “Helical-chain copper(II) complexes and a cyclic tetranuclear copper(II) complex with single syn-anti carboxylate bridges and ferromagnetic exchange interactions,” Inorganic Chemistry, vol. 39, no. 13, pp. 2882–2890, 2000. View at Publisher · View at Google Scholar
6. J. T. Rhule, C. L. Hill, D. A. Judd, and R. F. Schinazi, “Polyoxometalates in medicine,” Chemical Reviews, vol. 98, no. 1, pp. 327–358, 1998. View at Publisher · View at Google Scholar
7. M. Inoue and T. Yamase, “Synthesis and crystal structures of $\gamma$-type octamolybdates coordinated by chiral lysines,” Bulletin of the Chemical Society of Japan, vol. 68, no. 11, pp. 3055–3063, 1995. View at Publisher · View at Google Scholar
8. C. K. Jørgensen, “Comparative crystal field studies. II. Nickel(II) and copper(II) complexes with polydentate ligands and the behaviour of the residual places for co-ordination,” Acta Chemica Scandinavica, vol. 10, no. 6, pp. 887–910, 1956. View at Publisher · View at Google Scholar
9. R. A. Palmer and P. L. Meredith, “Polarized crystal spectra of bis(DL-histidinato)nickel(II) monohydrate and bis(L-histidinato)nickel(II) monohydrate,” Inorganic Chemistry, vol. 10, no. 5, pp. 1049–1056, 1971. View at Publisher · View at Google Scholar
10. K. A. Fraser and M. M. Harding, “The crystal and molecular structure of bis(histidino)nickel(II) monohydrate,” Journal of the Chemical Society A, pp. 415–420, 1967. View at Publisher · View at Google Scholar
11. A. Bose and R. Chatterjee, “Orthorhombic crystalline field theory of ${\text{Ni}}^{2+}$. 6${\text{H}}_2\text{O}$ complex,” Proceedings of the Physical Society, vol. 82, no. 1, pp. 23–32, 1963.
12. A. B. P. Lever, I. M. Walker, and P. J. McCarthy, “The single crystal polarised electronic spectrum of all-trans Ni${(\text{as N,N-dimethylethylenediamine})}_2$${(\text{trichloroacetate})}_2$ at 10 K,” Inorganica Chimica Acta, vol. 44, no. 2, pp. L143–L145, 1980. View at Publisher · View at Google Scholar
13. G. G. Smith, A. Khatib, and G. S. Reddy, “The effect of nickel(II) and cobalt(III) and other metal ions on the racemization of free and bound L-alanine,” Journal of the American Chemical Society, vol. 105, no. 2, pp. 293–295, 1983. View at Publisher · View at Google Scholar
14. K. A. Kochetkov, “Modern asymmetric synthesis of $\alpha$-aminoacids,” Russian Chemical Reviews, vol. 56, no. 11, pp. 1045–1067, 1987. View at Publisher · View at Google Scholar
15. A. A. Khatib and M. H. Engel, “Electronic spectral studies of nickel(II) alanine complexes,” Inorganica Chimica Acta, vol. 166, no. 2, pp. 273–277, 1989. View at Publisher · View at Google Scholar
16. APEX-II, Area-Detector Software Package v2.1, Bruker Analytical X-ray Systems, Inc., Madison, Wis, USA, 2006.
17. SAINT, SAX Area-Detector Integration Program, 7.34A, Siemens Industrial Automation, Inc., Madison, Wis, USA, 2006.
18. XPREP, Part of the SHELXTL Crystal Structure Determination Package, v6.14, Siemens Industrial Automation, Inc., Madison, Wis, USA, 1995.
19. G. M. Sheldrick, SADABS: Siemens Area Detector ABSorption Correction Program, v2.10, Bruker Analytical X-ray Systems Inc., Madison, Wis, USA, 2005.
20. XS, Program for the Solution of X-Ray Crystal Structures, Part of the SHELXTL Crystal Structure Determination Package, Bruker Analytical X-ray Systems Inc., Madison, Wis, USA, 1995.
21. C. K. Johnson, “ORTEPII Report ORNL-3794, revised,” Oak Ridge National Laboratory, Oak Ridge, Tenn, USA, 1971.
22. J. Drummond and J. S. Wood, “Crystal and molecular structure of tetraphenylarsonium tetranitratomanganate(II) and X-ray study of other $\text{M}{({\text{NO}}_3)}_4^{2-}$ ions (M = Ni, Cu, or Zn),” Journal of the Chemical Society A, pp. 226–232, 1970. View at Publisher · View at Google Scholar
23. R. Vicente, A. Escuer, J. Ribas, and X. Solans, “The first nickel(II) alternating chain with two different end-to-end azido bridges,” Inorganic Chemistry, vol. 31, no. 9, pp. 1726–1728, 1992. View at Publisher · View at Google Scholar
24. T. Ito, M. Kato, and H. Ito, “X-ray structural study on molecular stereochemistries of six-coordinate Zn(II) complexes of trans-${\text{ZnX}}_2{\text{N}}_4$ type. Out-of-plane displacement of Zn(II) from a plane formed by in-plane four nitrogens,” Bulletin of the Chemical Society of Japan, vol. 57, no. 9, pp. 2634–2640, 1984. View at Publisher · View at Google Scholar
25. K. Rajagopal, R. V. Krishnakumar, M. Subha Nandhini, K. Ravikumar, and S. Natarajan, “Bis(DL-alanine)tetraaquacobalt(II) dinitrate,” Acta Crystallographica Section E, vol. 59, part 8, pp. m562–m564, 2003. View at Publisher · View at Google Scholar