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Title: Synthesis, crystal structure and magnetic properties of new MnIII-CuII heterometallic aggregates based on multidentate Schiff-base ligands.
Authors: Wu, Qiong; Shi, Quan; Li, Yang-Guang; Wang, En-Bo
Abstract: Reaction of copper powder, manganese(II) nitrates and multidentate Schiff-base ligands in hot methanol solution led to the isolation of two new MnIII-CuII heterometallic aggregates, [Mn2IIICu2II(H2L)4] · (NO3)2 · 2CH3OH (1) (H4L=2-[(2-hydroxy-benzylidene)-amino]-2-hydroxymethyl-proane-1,3-diol) and [MnIIICuII3(sae)4(MeOH)(H2O)3] · NO3 · MeOH (2) (H2sae = salicylidene-2-ethanolamine). Both compounds were characterized by elemental analysis, IR, XPS, EPR, XRPD and single crystal X-ray diffraction. Compound 1 crystallizes in the triclinic space group P1 with a = 11.1268(4) Å, b = 11.6153(4) Å, c = 11.8129(5) Å, α = 88.435(10)°, β = 80.203(10)°, γ = 77.572(10)°, V = 1469.13(10) Å3, Z = 1, R1(wR2) =0.0300(0.0771). Compound 2 crystallizes in the monoclinic space group P21/n with a = 18.1715(7), b = 12.9931(5), c = 19.5903(8) Å, β = 97.1980(10)°, V = 4588.9(3) Å3, Z = 4, R1(wR2) = 0.0667 (0.1998). The magnetic susceptibilities of 1 and 2 display the antiferromagnetic interactions in both compounds.
Subjects: MANGANESE; COPPER; SCHIFF bases; LIGANDS (Chemistry); MAGNETISM
Publication: Journal of Coordination Chemistry, 2008, Vol 61, Issue 19, p3080
ISSN: 0095-8972
Publication type: Academic Journal
DOI: 10.1080/00958970801998945

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Synthesis, crystal structure and magnetic properties of new MnIII-CuII heterometallic aggregates based on multidentate Schiff-base ligands.