1998
DOI: 10.1021/ic970362g
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Competing Exchange Interactions and Ground-State Variability:  Linear Homo- and Heterotrinuclear Manganese(III, IV) Complexes with Tris(dimethylglyoximato)metalate(II) Tetraanions as Bridging Ligands

Abstract: Two series of linear homo- and heterotrinuclear complexes, MnIIIMIIMnIII and MnIVMIIMnIV, where MII represents MnII (1 and 5), NiII (2 and 6), CuII (3 and 7), or ZnII (4 and 8), containing three dimethylglyoximato dianions (dmg2-) as bridging ligands and 1,4,7-trimethyl-1,4,7-triazacyclononane (L) as the capping ligand for the terminal MnIII or MnIV ions, have been synthesized. Compounds 1−8 have been characterized on the basis of elemental analyses, IR, UV−vis, and EPR spectroscopy, and variable-temperature (… Show more

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Cited by 80 publications
(47 citation statements)
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“…41 For the analysis of the exchange coupling constants in model compounds we selected the oxalato-bridged Cu(II) complexes. Because we have previously studied 42 the magnetostructural correlations and the influence of the ligands on the exchange coupling of oxalato-bridged Cu(II) dinuclear complexes using the same computational approach, we wish to find out if new unenvisaged features appear in the case of polynuclear analogues.…”
Section: Application To Polynuclear Transition Metal Complexesmentioning
confidence: 99%
See 1 more Smart Citation
“…41 For the analysis of the exchange coupling constants in model compounds we selected the oxalato-bridged Cu(II) complexes. Because we have previously studied 42 the magnetostructural correlations and the influence of the ligands on the exchange coupling of oxalato-bridged Cu(II) dinuclear complexes using the same computational approach, we wish to find out if new unenvisaged features appear in the case of polynuclear analogues.…”
Section: Application To Polynuclear Transition Metal Complexesmentioning
confidence: 99%
“…41 We have chosen this compound to consider a case with different paramagnetic centers having more than one unpaired electron in two of the paramagnetic centers. The calculated coupling constants are Ϫ141.3 cm Ϫ1 for the Mn(III)Cu(II) interaction and Ϫ6.2 cm Ϫ1 for the Mn(III)Mn(III) one, that com- …”
mentioning
confidence: 99%
“…The search for new materials with potential adsorption and luminescent properties explains recent interest in d 10 transition metal polynuclear compounds and coordination polymers [1,2]. Oxime ligands exhibit a notable ability to bridge metal ions [3].…”
mentioning
confidence: 99%
“…39,40 Additionally there are several examples of cryptands consisting of tris-glyoximato moieties with the oxygen donors bound to antimony, tin, iron, manganese, or chromium. [41][42][43][44][45][46][47] Given the utilization of macrocycles for many applications including biomimetic chemistry, catalysis, and solar fuels, facile synthetic access to diverse metallomacrocycles is of interest as a complementary strategy for tuning of the electronic and steric environment of coordinated metal centers. We report herein on the synthesis of metallomacrocycles based on aluminium bridged bisglyoximato frameworks and their coordination chemistry with iron and palladium.…”
Section: Introductionmentioning
confidence: 99%