Synthetic, X-ray Structure, Electron Paramagnetic Resonance, and Magnetic Studies of the Manganese(II) Complex of 1-Thia-4,7-diazacyclononane ([9]aneN2S)
- 1 January 1996
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 35 (4) , 1039-1044
- https://doi.org/10.1021/ic950549c
Abstract
Reaction of manganese(II) perchlorate hexahydrate with a methanol solution of 1-thia-4,7-diazacyclononane ([9]aneN2S) resulted in the isolation of the manganese(II) complex [Mn([9]aneN2S)2](ClO4)2. The X-ray structure of this complex is reported: crystal system orthorhombic, space group Pbam, No. 55, a = 7.937(2) Å, b = 8.811(2) Å, c = 15.531(3) Å, Z = 2, R = 0.0579. The complex is high spin (S = 5/2) with an effective magnetic moment (μeff) 5.82 μB at 298 K and 5.65 μB at 4.2 K. Computer simulation of the Q-band EPR spectrum of [Mn([9]aneN2S)2](ClO4)2 yields g = 1.99 ± 0.01, |D| = 0.19 ± 0.005 cm-1, and E/D = 0.04 ± 0.02. For the analogous hexaamine complex [Mn([9]aneN3)2](ClO4)2 ([9]aneN3 = 1,4,7-triazacyclononane) analysis of the EPR spectra produced the following values: g = 1.98 ± 0.01, |D| = 0.09 ± 0.003 cm-1, and E/D = 0.1 ± 0.01. The spin Hamiltonian parameters for [Mn([9]aneN2S)2](ClO4)2 derived from the EPR spectra produced a good fit to the magnetic susceptibility data.Keywords
This publication has 45 references indexed in Scilit:
- Coordination of 4,7-bis(2-hydroxybenzyl)-1-oxa-4,7-diazacyclononane (LH2) with manganese(II) and -(III) and zinc(II). Crystal structure of [(LH)2Zn2(.mu.-OH)](PF6).cntdot.0.5CH3OHInorganic Chemistry, 1992
- Synthesis and structural and spectroscopic studies of manganese complexes of pendant-arm macrocycles based on 1,4,7-triazacyclononane: crystal structures of the manganese(II) complex [MnLH3][MnCl4] and of the mixed-valence manganese(II)-manganese(IV) hydrogen-bridged dimer [MnLH3LMn][PF6]3 (LH3 = N,N',N''-tris[(2S)-2-hydroxypropyl]-1,4,7-triazacyclononane) and of the manganese(IV) monomer [MnL'][ClO4] (L'H3 = N,N',N''-tris(2-hydroxyethyl)-1,4,7-triazacyclononane)Inorganic Chemistry, 1991
- Magnetism and electronic structure of a series of encapsulated first-row transition metalsInorganic Chemistry, 1990
- The Active Sites in Manganese‐Containing Metalloproteins and Inorganic Model ComplexesAngewandte Chemie International Edition in English, 1989
- Synthesis and reactivity of tricarbonyl(1,4,7-trithiacyclononane)manganese(1+): kinetics and mechanism of its formation and the crystal structure of [LMn(CO)3]3(PF6)2Br.2H2O (L = 1,4,7-trithiacyclononane)Inorganic Chemistry, 1989
- Dinuclear Manganese(II,III,IV) Model Complexes for the Active Center of the Metalloprotein Photosystem II: Synthesis, Magnetism, and Crystal Structure of [LMnIII(μ‐O)(μ‐CH3CO2)2MnIVL][ClO4]3(L = N,N′N″‐Trimethyl‐1,4,7‐triazacyclononane)Angewandte Chemie International Edition in English, 1986
- Manganese(II) complexes of polydentate Schiff bases. 1. Synthesis, characterization, magnetic properties, and molecular structureInorganic Chemistry, 1986
- Synthesis of a Tetranuclear Manganese(IV) Cluster with Adamantane Skeleton: [(C6H15N3)4Mn4O6]4+Angewandte Chemie International Edition in English, 1983
- Electrochemical studies of manganese(II) complexes containing pentadentate ligands with O2N3, O3N2, and O2SN2 donor setsInorganic Chemistry, 1981
- Replacement of polydentate ligands in Mn(II) complexes by ammoniaJournal of Inorganic and Nuclear Chemistry, 1966