SYNTHESIS AND CRYSTAL STRUCTURE OF A MANGANESE(III) COMPLEX WITH THE TETRADENTATE SCHIFF BASE N, N'-ETHYLENEBIS(SALICYLIDENEIMINATO)

Abstract The complex [Mn(salen)NCS] (H2salen=N,N′-ethylenebis(salicylideneiminato)) has been synthesized by the reaction of [Mn(salen)]ClO4 · 2H2O with KSCN. It crystallizes in space group Pbca, a=12.453(1), b=13.756(2), c=18.777(1)A, V=3216.6(16)A3, Z=8. X-ray structure analysis revealed a dimeric structure, in which two Mn (III) ions are bridged by two phenoxo oxygen atoms, O(2) and O(2A), of the salen ligand in an out-of-plane fashion with an Mn-O(2A) distance of 2.742(2)A. Each manganese atom has distorted octahedral coordination geometry. The thiocyanate ion coordinates to Mn(III) with the N-atom with Mn-N(3) equal to 2.160(2)A.

[1]  K. Nakajima,et al.  MANGANESE(III) COMPLEXES CONTAINING OPTICALLY ACTIVE TETRADENTATE SCHIFF BASE LIGANDS. EFFECT OF PHENYL SUBSTITUENTS , 1995 .

[2]  Tasuku Ito,et al.  Incorporation of MnIII and FeII Complexes into TCNQ Networks: Preparations, Crystal Structures, and Magnetic Properties of [MnIII(salen)(TCNQ)0.5][MnIII(salen)(TCNQ)0.5(CH3OH)]CH3OH·H2O and [FeII(CH3OH)4(TCNQ)2]TCNQ·2CH3CN , 1995 .

[3]  X. You,et al.  Synthesis, crystal structure and properties of a linear trinuclear manganese(II) complex [Mn3(CH3CO2)2(bpc)2(py)4(H2O)2].0.5H2O , 1994 .

[4]  Y. Katsube,et al.  A High-Speed Data-Collection System for Large-Unit-Cell Crystals using an Imaging Plate as a Detector , 1992 .

[5]  G. Sheldrick.  Phase annealing in SHELX-90: direct methods for larger structures , 1990 .

[6]  H. O̅kawa,et al.  Crystal structure and magnetic property of the binuclear manganese(III) complex [Mn(L)H2O]2(ClO4)2(L N-(acetylaceto nylidene)-N′-(α-methylsalicylidene)-ethylenediamine) , 1989 .

[7]  J. Kochi,et al.  Epoxidation of olefins with cationic (salen)manganese(III) complexes. The modulation of catalytic activity by substituents. , 1986, Journal of the American Chemical Society.

[8]  B. Kennedy,et al.  Magnetic properties and zero-field splitting in high-spin manganese(III) complexes. 1. Mononuclear and polynuclear Schiff-base chelates , 1985 .

[9]  M. Mikuriya,et al.  Binuclear Metal Complexes. XXXVII. Crystal and Molecular Structure of a Binuclear Manganese(III) Complex Bridged by Two Alkoxo Oxygens and Two Bidentate Acetate Ions , 1981 .

[10]  V. Day,et al.  Manganese Schiff base complexes. 5. Synthesis and spectroscopy of some anion complexes of N,N'-ethylenebis(acetylacetone iminato)manganese(III) , 1977 .

[11]  C. Raston,et al.  Crystal structure of mer-tris-(N-benzylsalicylaldiminato)manganese(III) , 1974 .

[12]  M. Farrell,et al.  Manganese Schiff's base complexes—I: Synthesis and spectroscopy of some anion complexes of (4-sec-butylsalicylaldehydeethylenediiminato) manganese(III) , 1973 .

[13]  M. R. Bermejo,et al.  The visible light induced rearrangement of a manganese(III) complex of an unsymmetrical tetradentate Schiff's base ligand, 4-[2-(2-hydroxyphenylmethyleneamino)ethylamino]pent-3-en-2-one, to a manganese(III) complex of the symmetrical ligand salen , 1991 .

[14]  D. I. Stuart,et al.  An empirical method for correcting diffractometer data for absorption effects , 1983 .

[15]  J. Davies,et al.  Crystal and molecular structure and magnetic properties of catena-µ-acetato-[NN′-ethylenebis(salicylaldiminato)]manganese(III). A linear-chain complex containing a single anti-anti acetate bridge , 1973 .

[16]  K. Murray,et al.  N-Substituted salicylaldimine complexes of manganese(III). Synthesis, magnetism, and spectra , 1969 .

[17]  H. Weigold,et al.  The magnetic properties of some manganese(II) Schiff-base complexes and the oxidation products of NN′-ethylenebis(salicylaldiminato)manganese(II) , 1968 .

[18]  A. Earnshaw,et al.  Transition metal–Schiff's base complexes. Part IV. Investigations of some iron(II) and manganese(II) systems , 1968 .

[19]  G. Brauer.  Handbook of Preparative Inorganic Chemistry , 1963 .

[20]  G. D. Rieck,et al.  International tables for X-ray crystallography , 1962 .