Synthesis, structures, and properties of two new binuclear complexes based on carboxyl-substituted nitronyl nitroxide: [M₂(NITpBA)₄(H₂O)₂] (M = Zn and Cu)

Jing Chen, You-Juan Zhang, Kun-Tao Huang, Qiang Huang, Jun-Jie Wang

College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, China.
School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, China.

DOI: 10.4236/ojic.2013.32005                

Abstract

Two new binuclear complexes, [M₂(μ-NITpBA)₄(H₂O)₂] (M = Zn 1 and Cu 2) [where NIpBA = 2-(4-carboxyl-phenyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-1-oxyl-3-oxide], were stylized and characterized. Magnetic susceptibility measurements revealed antiferromagnetic exchange interactions in two complexes.

Keywords

Binuclear Complex; Carboxyl-Substituted; Nitronyl Nitroxide; Antiferromagnetic Exchange

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Caneschi, A., Gatteschi, D., Sessoli, R. and Rey, P. (1989) Toward molecular magnets: The metal-radical approach. Accounts of Chemical Research, 22, 392-398. doi:10.1021/ar00167a004
[2]	Boskovic, C., Pink, M., Huffman, J.C., Hendrickson, D.N. and Christou, G. (2001) Single-molecule magnets:? Ligand-induced core distortion and multiple Jahn-Teller isomerism in [Mn12O12(O2CMe)8(O2PPh2) 8(H2O)4]. Journal of the American Chemical Society, 123, 9914-9915. doi:10.1021/ja016341+
[3]	Aubin, S.M.J., Sun, Z., Eppley, H.J., Rumberger, E.M., Guzei, I.A., Folting, K., Gantzel, P.K., Rheingold, A.L., Christou, G. and Hendrickson, D.N. (2001) Single-molecule magnets:? Jahn-Teller isomerism and the origin of two magnetization relaxation processes in Mn12 complexes. Inorganic Chemistry, 40, 2127-2146. doi:10.1021/ic000911+
[4]	Kahn, O. (1993) Molecular magnetism. VCH, Weinheim.
[5]	Inoue, K. and Iwamura, H. (1993) Magnetic properties of the crystals of p-(1-oxyl-3-oxido-4,4,5,5-tetramethyl-2-imidazolin-2-yl)benzoic acid and its alkali metal salts. Chemical Physics Letters, 207, 551-554. doi:10.1016/0009-2614(93)89046-K
[6]	Ballester, G., Coronado, E., Galán-Mascarós, J.R., Giménez-Saiz, C., Nuez, A. and Romero, F.M. (2001) A new approach for the synthesis of magnetic materials based on nitroxide free radicals and inorganic coordination polymers. Polyhedron, 20, 1659-1662.
[7]	Schi?dt, N.C., Fabrizi de Biani, F., Caneschi, A. and Gatteschi, D. (1996) Structure and magnetism of nickel (II) and manganese (II) complexes of a nitronyl nitroxide carboxylic acid. Inorganica Chimica Acta, 248, 139-146. doi:10.1016/0020-1693(95)04996-7
[8]	Zhao, Q.H., Li, L.C., Jiang, Z.H., Liao, D.Z., Yan, S.P. and Fang, R.B. (2004) Synthesis and structure of a novel one-dimensional chain compound formed by copper (II) and nitronyl nitroxide radical. Journal of Chemical Crystallography, 34, 191-193. doi:10.1023/B:JOCC.0000021563.00957.85
[9]	Del Sesto, R.E., Arif, A.M. and Miller, J.S. (2000) Copper (II) benzoate nitroxide dimers and chains: Structure and magnetic studies. Inorganic Chemistry, 39, 4894-4902. doi:10.1021/ic0007106
[10]	Schatzschneider, U., Weyhermüller, T. and Rentschler, E. (2002) Copper complexes with mono nd bidentatebridging nitronyl nitroxide-substituted benzoate ligands. Inorganica Chimica Acta, 337, 122-130. doi:10.1016/S0020-1693(02)01103-9
[11]	B?tz, C., Amann, P., Deiseroth, H.J. and Dulog, L. (1994) Die oxidation zweier neuer 1,3-dihydroxyimidazolidinedarstellung und Struktur von Nitronylnitroxid-Radikalen. Liebigs Annalen der Chemie, 7, 739-740. doi:10.1002/jlac.199419940715
[12]	Sheldrick, G.M. (1997) SHELXS97, program for the solution of crystal structure. University of G?ttingen, G?ttingen.
[13]	Sheldrick, G.M. (1997) SHELXS97, program for the refinement of crystal structure. University of G?ttingen, G?ttingen.
[14]	Sheldrick, G.M. (1996) SADABS. University of G?ttingen, G?ttingen.
[15]	Ohmura, T., Mori, W., Takei, T., Ikeda, T. and Maeda, A. (2005) Structure and magnetic behaviour of mononuclear and dinuclear Cu (II)/Zn (II) monocarboxylate-pyridine derivatives studied by crystal engineering. Materials Science-Poland, 23, 729-732.
[16]	Chui, S.S.Y.S., Lo, M.F., Chammant, J.P.H., Orpen, A.G. and Williams, I.D. (1999) A chemically functionalizable nanoporous material [Cu3(TMA)2(H2O)3]n. Science, 283, 1148-1150. doi:10.1126/science.283.5405.1148
[17]	Deacon, G.B. and Phillips, R.J. (1980) Relationships between the carbon-oxygen stretching frequencies of carboxylato complexes and the type of carboxylate coordination. Coordination Chemistry Reviews, 33, 227-250. doi:10.1016/S0010-8545(00)80455-5
[18]	Alcock, N.W., Tracy, V.M. and Waddington, T.C. (1976) Acetates and acetato-complexes. Part 2. Spectroscopic studies. Journal of the Chemical Society, Dalton Transactions, 21, 2243-2245. doi:10.1039/dt9760002243
[19]	Lewis, J., Lin, Y., Royston, L. and Thompson, R. (1965) The chemistry of polynuclear compounds. Part III. Magnetic properties of some carboxylic acid derivatives of copper (II). Journal of the Chemical Society, 17, 6464-6477. doi:10.1039/jr9650006464
[20]	Lippard, S.J. and Doedens, R.J. (2007) Structure and metal-metal interactions in copper (II) carboxylate complexes. Progress in Inorganic Chemistry, 21, 209-231.
[21]	Castro, I., Sletten, J., Calatayud, M.L., JuIve, M., Cano, J., Lloret, F. and Caneschi, A. (1995) Synthesis and magnetic properties of a tetranuclear copper (II) complex with a mu.-1,2,3,4-squarato coordination mode. Crystal structure of u-1,2,3,4-squarato)tetrakis [(tris(2-aminoethyl)amine)copper (II)] perchlorate. Inorganic Chemistry, 34, 4903-4909. doi:10.1021/ic00123a027
[22]	Gao, D.Z., Zhao, W.W., Chen, Y.W. and Sun, Y.Q. (2009) Synthesis, crystal structure and magnetic behavior of a new Zn (II) nitronyl nitroxide complex [Zn(NIT3Py)2Cl2]. Chinese Journal of Inorganic Chemistry, 25, 738-741.
[23]	Wang, S.P., Gao, D.Z., Liao, D.Z., Jiang. Z.H. and Yan, S.P. (2006) Two novel diamagnetic-metal coordination polymers of nitronyl nitroxide radical incorporating isophthalate bridges. Transition Metal Chemistry, 31, 214-219. doi:10.1007/s11243-005-6396-x
[24]	Chen, J., Liao, D.Z., Jiang, Z.H. and Yan, S.P. (2005) A new heterospin complex from oxamide-bridged Cu (II) binuclear units and carboxyl-phenyl-substituted nitronyl nitroxide. Inorganic Chemistry Communications, 8, 564- 567. doi:10.1016/j.inoche.2005.02.015