Synthesis and Structural Characterization of a Binuclear Mixed-Ligand (Salicylate and N, N-diethylnicotinamide) Nickel(II) Complex, Its Magnetic Properties. [Ni-2(mu-Sal)(4)(Dena)(2)]H2O


Kose D. A., Akkurt F., Sahin O., Buyukgungor O.

JOURNAL OF THE CHINESE CHEMICAL SOCIETY, vol.61, no.12, pp.1326-1332, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 61 Issue: 12
  • Publication Date: 2014
  • Doi Number: 10.1002/jccs.201400292
  • Journal Name: JOURNAL OF THE CHINESE CHEMICAL SOCIETY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1326-1332
  • Keywords: Bridge salicylate, Binuclear Ni(II) complex, Strong paramagnetic, Binuclear carboxylate complex, Paddlewheel structure, M-HYDROXYBENZOATE COMPLEXES, PURPLE ACID-PHOSPHATASES, COORDINATION POLYMERS, EXCHANGE INTERACTIONS, COPPER(II) COMPLEXES, CARBOXYLATE BRIDGES, CRYSTAL-STRUCTURES, CO(II), ZN(II), CU(II)
  • Gazi University Affiliated: Yes

Abstract

The title complex of [Ni-2(mu-Sal)(4)(Dena)(2)]H2O, [(mu-tetrakissalicylato-kappa-O,O)(bis-N,N- diethylnicotinamide-kappa-N)(binickel(II))] hydrate, C48H52Ni2N4O16, has been synthesized and explained as structure using some elemental analyses. FT-IR spectra, UV- Vis reflectance, magnetic measurements, thermal analysis and x-ray diffraction methods. The results showed that the unit cell of complex includes two molecules Ni-II cation, four molecules salicylates as bridge and two molecules N,N-diethylnicotinamide ligands, also there is one molecule hydrated aqua. The compound crystallizes in the monoclinic space group P2(1)/c with the following unit-cell parameters: a = 13.6776( 6) angstrom, b = 10.5238( 3) angstrom, c = 21.8165( 9), alpha = 90.00 degrees, beta = 126.546( 3)degrees, gamma = 90.00 degrees and Z = 2. The compound [Ni-2(mu-Sal)(4)(Dena)(2)]H2O is a typical paddle-wheel complex structure. Two Ni-II ions are bridged by four salicylate ligands (O2, O2(i), O3, O3(i), O5, O5(i), O6 and O6(i)) using a mu-COO- coordination mode [symmetry code: (i) 1-x, 1-y, 1-z]. Each Ni-II also coordinates to one nitrogen atom (N1 and N1(i)) from one N,N-diethylnicotinamide ligand molecule in the axial position. The complex has strong paramagnetic properties.