Synthesis and Crystal Structure of Cobalt(III) Complexes of Salen Type Schiff Bases and Tertiary Phosphanes as Ligands

Document Type : Research Paper

Authors

1 Department of Chemistry, Isfahan University of Technology, Isfahan, Iran, 84156-83111

2 Department of Chemistry, Shahid Beheshti University, G. C., Evin, Tehran 1983963113, Iran

Abstract

The new [Co(Salen)(PBu3)2]ClO4, [Co(Salen)(PBu3)2]BF4, [Co(Salpn)(PBu3)2]ClO4 and [Co(Salen)(PMe2Ph)2]ClO4 ( where salen = bis(salisylaldehyde)ethylenediimine)) complexes were synthesiszed and chracterized by IR, UV-Vis, 1H NMR spectroscopy and elemental analysis. The IR and 1H NMR spectra cofirmed that the synthesised complexes contain Schiff base ligand, phosphane and conter ion and the elemental analysis is in good agreement with those calculated for the proposed formula. The coordination geometry of [Co(Salen)(PMe2Ph)2]ClO4 and [Co(Salen)(PBu3)2]ClO4 complexes were determined by X-ray crystallography. It has been found that all the complexes are hexa coordinate in the solid state. Cobalt atom exhibits a distorted octahedral geometry and the salen ligand has the N2O2 coordinated environment in the equatorial plane.
Cobalt complexes with ligands derived from salicylaldehyde have been well studied.[1] They are regarded as models for the Cobalamine (B12) coenzymes [2-4] classified as an oxygen carrier [5] and used as a catalyst for the preparative oxygenation of phenols [6] indols [7] and amines.[8]. The catalytic activity of Co(III) with salen complexes has been investigated. It was shown the catalytically active species contains cobalt in the Co(III) oxidation state [9-15].

Keywords

References

[1] J. Costamagna, J. Vargas, R. Latorre, A. Alvarado, G.
Mena, Coord. Chem. Rev. 119 (1992) 67.
[2] M.M. Aly, J. Cood. Chem. 43 (1998) 89.
[3] R. Cmi, S.J. Moore, L.G. Marzilli, Inorg. Chem. 37
(1998) 6890.
[4] S.M. Polson, R. Cini, C. Pifferi, L.G. Marzilli, Inorg.
Chem. 36 (1997) 314.
[5] E.C. Niederhoffer, J.H. Timmons, A.E. Martell, Chem.
Rev. 84 (1984) 137.
[6] K.Matsuura, S. Maeda, Y. Araki, Y. Ishido, T. Murai,
Tetrahedron 33 (1977) 2869.
[7] A. Nishinaga, T. Tsutsui, H. Moniyama, T. Wazaki, T.
Mashino, Y.J. Fujii, Mo. Catalysis 83 (1993) 117.
[8] A. Nishinaga, T. Tsutsui, S. Yamazaki, T. Matsuura,
Tetrahedron Lett. 29 (1988) 4115.
[9] A. Nishinaga, H. Ohara, H. Tomito, T. Matsuura,
Tetrahedron Lett. 24 (1983) 213.
[10] E. Eichhorn, A. Rieker, B. Speiser, Angw. Chem., Int.
Ed. Engl. 31 (1992) 1215.
[11] E. Eichhorn, A. Rieker, B. Speiser, J. Sieglen, J.
Strahle, Z. Natureforsch 48b (1993) 418.
[12] E. Eichhorn, A. Rieker, B. Speiser, H. Stahl, Inorg.
Chem. 36 (1997) 3307.
[13] E. Eichhorn, B. Speiser, J. Electroanal. Chem.
Interfatial Elecrochem. 365 (1994) 207.
[14] B. Speiser, H. Stahl, Angw. Chem., Int. Ed. Engl. 34
(1995) 1086.
[15] B. Golles, B. Speiser, H. Stahl, J. Sieglen, J. Strahle, Z.
Natureforsch, 51b (1996) 388.
[16] M. Asadi, A.H. Sarvestani, Can. J. Chem. 79 (2001)
1360.
[17] M. Asadi, A.H. Sarvestani, B. Hemateenejad, J. Chem.
Res. (2002) 520.
[18] A.H. Sarvestani, A. Salimi, S. Mohebbi, R. Hallaj. J.
Chem. Res. (2005) 190.
[19] A.H. Sarvestani, S. Mohebbi. J. Chem. Res. (2006)
257.
[20] A.H. Kianfar, S. Zargari. J. Cood. Chem. 61 (2008)
341.
[21] M. Asadi, M.B. Ahmadi, Kh. Mohammadi, Z. Asadi,
A.H. Sarvestani, J. Chem. Thermodynamics 36 (2004)
141.
[22] J. Kjeld, C. van Bommel, W. Verboom, H. Kooijman,
A.L. Spek, N.D. Reinhoudt. Inorg. Chem. 37 (1998)
4197.
[23] Stoe & Cie, X-AREA, vesion 1.30, Program for the
acquisition and analysis of data; Stoe & Cie GmbH:
Darmatadt, Germany, 2005.
[24] Stoe & Cie, X-RED, vesion 1.28b, Program for data
reduction and absorption correction; Stoe & Cie
GmbH: Darmatadt, Germany, 2005.
[25] Stoe & Cie, X-SHAPE, vesion 2.05, Program for
crystal optimization for numerical absorption
correction; Stoe & Cie GmbH: Darmatadt, Germany,
2004.
[26] G.M. Sheldrick, SHELX97. Program for crystal
structure solution. University of Göttingen, Germany,
1997.
[27] G.M. Sheldrick, SHELX97. Program for crystal
structure refinement. University of Göttingen,
Germany, 1997.
[28] International Tables Foe X-ray Crystallography, Vol C,
Kluwer Academic Publisher, Doordrecht, The
Netherlands, 1995.
[29] Stoe & Cie, X-STEP32, Version 1.07b:
Crystallographic package; Stoe & Cie GmbH:
Darmstadt, Germany, 2000.
[30] A.H. Kianfar, V. Sobhani, M. Dostani, M. Shamsipur, M. Roushani, Inorg. Chim. Acta 355 (2011) 108.
[31] G. Tauzher, G. Mestroni, A. Puxeddu, R. Costanzo, G.
Costa, J. Chem. Soc. (A). (1971) 2504.
[32] N.S. Biradar, V.H. Kulkarni, J. Inorg. Nucl. Chem. 8
(1971) 2451.
[33] N.S. Biradar, G.V. Karajagi, T.M. Aminabhavi, Inorg.
Chim. Acta 82 (1984) 211.
[34] J.A. Bertrand, P.G. Eller, Inorg. Chem. 4 (1974) 927.
[35] B. Bosnich, J. Am. Chem. Soc. 90 (1968) 627.
[36] E. Ochiai, K. Long, C.R. Sperati, D.H. Busch, J. Am.
Chem. Soc. 91 (1969) 3201.
[37] D.F. Shriver, P.W. Atkins, Inorganic Chemistry
OxfordUnivrsity Press, 1999, pp. 240.
[38] Y.-L. Zhang, W.-J. Ruan, X.-J. Zhao, H.-G. Wang, Z.-
A. Zhu, Polyhedron 22 (2003) 1535.
[39] J. Welby, L.N. Rusere, J.M. Tanski, L.A. Tyler, Inorg.
Chim. Acta 362 (2009) 1405.
[40] C. Huilan, H. Deyan, L. Tian, Y. Hong, T. Wenxia,
Inorg. Chem. 35 (1996) 1502.
[41] M. Amirnasr, R. Vafazadeh, A.H. Mahmoudkhani,
Can. J. Chem. 80 (2002) 1196.
[42] T.L. Brown, K.J. Lee, Coord. Chem. Rev. 128 (1993)
89.
Inorganic Chemistry Research
Volume 2, Issue 1
Autumn and Winter
2018
Pages 105-114

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History

  • Receive Date: 19 April 2015
  • Revise Date: 14 July 2015
  • Accept Date: 04 July 2016

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