Synthesis and structural characterization of an unsymmetrical (μ-OXO)-DI-(μ-ACETATO) manganese(III,III) complex ([Mn2O(OAc)2(H2O)(NO3)(bpy)2](ClO4)·CH3COOH)

Reddy, K. Rajender; Rajasekharan, M. V.; Sukumar, Sunanda

doi:10.1016/0277-5387(96)00179-9

Cited by 16 publications

(13 citation statements)

References 29 publications

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“…When the distance values for the x and y axis are similar, and smaller than the distance value found for the z 3 (phtha = phthalate). [10] polyhedron is considered elongated, while if the distance for the x axis is shorter than the distances for the z and y axis ···N t ), and the greater values of this parameter correspond to the compounds with a major antiferromagnetic coupling.…”

Section: Magnetic Propertiesmentioning

confidence: 81%

“…For compounds 1 and 3 the intense band of NO 3 -appears overlapped with the carboxylate one (ca. 1380 cm -1 ) and it is not possible to distinguish between the coordinated and free ion.…”

Section: Synthesesmentioning

confidence: 96%

“…However, tridentate amines TMIP (tris(N-methylimidazol-2-yl)phosphane) and HB-(pz) 3 (hidrotris(1-pyrazolyl)borate) lead to a rhombic distortion, (antiferromagnetic and ferromagnetic contributions are similar) and a small antiferromagnetic interaction was found for compounds [{Mn(HBpz 3 )} 2 (µ-CH 3 COO) 2 -(µ-O)] [14] (J ≈ -1 cm -1 ) and [{Mn(TMIP)} 2 (µ-CH 3 COO) 2 (µ-O)](ClO 4 ) 2 (J ≈ -0.4 cm -1 ). [15] When the blocking ligand is bpy (2,2Ј-bipyridine) the sixth position of the octahedron is occupied by a monodentate ligand; this situation provides a major flexibility to the coordination polyhedron and different types and degrees of distortion can be found.…”

Section: (µ-O)]mentioning

confidence: 99%

“…n+ with RCOO = 2-MeC 6 H 4 COO (1, 2) and 2-FC 6 H 4 COO (3, 4); the counteranion could be NO 3 -(1, 3) or ClO 4 -(2, 4). A monodentate ligand (L, LЈ) completes the octahedral environment of the manganese ions and could be H 2 O, NO 3 -or ClO 4 -.…”

Section: (µ-O){mn(bpy)lј}]mentioning

confidence: 99%

“…A monodentate ligand (L, LЈ) completes the octahedral environment of the manganese ions and could be H 2 O, NO 3 -or ClO 4 -. The coordination of the counteranion to the manganese ion enables us to study the effect of these ligands on the magnetic properties.…”

Section: (µ-O){mn(bpy)lј}]mentioning

confidence: 99%

See 4 more Smart Citations

New Dinuclear Mn^III Compounds with 2‐MeC₆H₄COO and 2‐FC₆H₄COO Bridges – Effect of Terminal Monodentate Ligands (H₂O, ClO₄^– and NO₃^–) on the Magnetic Properties

et al. 2007

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Section: Magnetic Propertiesmentioning

confidence: 81%

“…For compounds 1 and 3 the intense band of NO 3 -appears overlapped with the carboxylate one (ca. 1380 cm -1 ) and it is not possible to distinguish between the coordinated and free ion.…”

Section: Synthesesmentioning

confidence: 96%

Section: (µ-O)]mentioning

confidence: 99%

Section: (µ-O){mn(bpy)lј}]mentioning

confidence: 99%

Section: (µ-O){mn(bpy)lј}]mentioning

confidence: 99%

See 3 more Smart Citations

New Dinuclear Mn^III Compounds with 2‐MeC₆H₄COO and 2‐FC₆H₄COO Bridges – Effect of Terminal Monodentate Ligands (H₂O, ClO₄^– and NO₃^–) on the Magnetic Properties

et al. 2007

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Dinuclear Mn^III Compounds [{Mn(bpy)(H₂O)}₂(μ‐4‐RC₆H₄COO)₂(μ‐O)](NO₃)₂ (R = Me, F, CF₃, MeO, tBu): Effect of the R Group on the Magnetic Properties and the Catalase Activity

et al. 2012

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Five new dinuclear Mn III compounds [{Mn(bpy)(H 2 O)} 2 (μ-4-RC 6 H 4 COO) 2 (μ-O)](NO 3 ) 2 [R = Me (1), F (2), CF 3 (3), MeO (4) and tBu (5); bpy = 2,2Ј-bipyridine] have been synthesized; compounds 1-3 have been characterized by X-ray diffraction. Moreover, a few crystals of the Mn III compound [{Mn(bpy)(H 2 O)}(μ-4-FC 6 H 4 COO)(μ-O){Mn(NO 3 )(bpy)(H 2 O)}]-(NO 3 ) 2 (6) have been obtained. Variable-temperature magnetic susceptibility data of 1-5 were recorded; all compounds show ferromagnetic behaviour with J = 1.48 cm -1 for 1, 1.44 cm -1 for 2, 5.66 cm -1 for 3, 3.22 cm -1 for 4 and 2.68 cm -1 for 5 (H = -JS 1 ·S 2 ); and |D Mn | = 1.5 cm -1 and |E Mn | = 0.5 cm -1 for all compounds except for 2, for which these values are [c]

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Aliphatic Dicarboxylate Ligands Assemble Weakly Coupled Molecular Pairs of [Mn^III]₂ Units

et al. 2012

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Seven new tetranuclear MnIII compounds have been obtained by assembling two dinuclear units, [{Mn(L)(NN)}2(μ‐O)]4+, with aliphatic dicarboxylate ligands COO(CH2)nCOO2–: succinato (n = 2, C42–), glutarato (n = 3, C52–) and adipato (n = 4, C62–), and NN = 2,2′‐bipyridine (bpy) or 1,10‐phenanthroline (phen). The general formula for these compounds is [{Mn(L)(NN)}4(μ‐Cm)2(μ‐O)2]X4 [X = ClO4, NN = bpy and Cm = C4 (1), C5 (2) and C6 (3); X = ClO4, NN = phen and Cm = C4 (4), C5 (5) and C6 (6); X = NO3, NN = bpy and Cm = C5 (7)]. Compounds 1, 2 and 4 were characterized by X‐ray diffraction, which confirmed the assembly of two dinuclear entities. The magnetic properties of the seven compounds were studied and the results indicate that the main interaction takes place within the dinuclear units. Compound 4 shows a dominant ferromagnetic coupling with J = 4.0 cm–1, while the rest of compounds display antiferromagnetic couplings with J values of –2.8 (1), –1.9 (2), –3.3 (3), –0.3 (5), –0.4 (6) and –9.3 cm–1 (7), which are all in agreement with magneto‐structural correlations. In the case of compound 4, a weak but significant antiferromagnetic coupling of the S = 4 [MnIII]2 subunits with an interaction constant of –0.9 cm–1 was observed.

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Synthesis and structural characterization of an unsymmetrical (μ-OXO)-DI-(μ-ACETATO) manganese(III,III) complex ([Mn2O(OAc)2(H2O)(NO3)(bpy)2](ClO4)·CH3COOH)

Cited by 16 publications

References 29 publications

New Dinuclear Mn^III Compounds with 2‐MeC₆H₄COO and 2‐FC₆H₄COO Bridges – Effect of Terminal Monodentate Ligands (H₂O, ClO₄^– and NO₃^–) on the Magnetic Properties

New Dinuclear Mn^III Compounds with 2‐MeC₆H₄COO and 2‐FC₆H₄COO Bridges – Effect of Terminal Monodentate Ligands (H₂O, ClO₄^– and NO₃^–) on the Magnetic Properties

Dinuclear Mn^III Compounds [{Mn(bpy)(H₂O)}₂(μ‐4‐RC₆H₄COO)₂(μ‐O)](NO₃)₂ (R = Me, F, CF₃, MeO, tBu): Effect of the R Group on the Magnetic Properties and the Catalase Activity

Aliphatic Dicarboxylate Ligands Assemble Weakly Coupled Molecular Pairs of [Mn^III]₂ Units

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Synthesis and structural characterization of an unsymmetrical (μ-OXO)-DI-(μ-ACETATO) manganese(III,III) complex ([Mn2O(OAc)2(H2O)(NO3)(bpy)2](ClO4)·CH3COOH)

Cited by 16 publications

References 29 publications

New Dinuclear MnIII Compounds with 2‐MeC6H4COO and 2‐FC6H4COO Bridges – Effect of Terminal Monodentate Ligands (H2O, ClO4– and NO3–) on the Magnetic Properties

New Dinuclear MnIII Compounds with 2‐MeC6H4COO and 2‐FC6H4COO Bridges – Effect of Terminal Monodentate Ligands (H2O, ClO4– and NO3–) on the Magnetic Properties

Dinuclear MnIII Compounds [{Mn(bpy)(H2O)}2(μ‐4‐RC6H4COO)2(μ‐O)](NO3)2 (R = Me, F, CF3, MeO, tBu): Effect of the R Group on the Magnetic Properties and the Catalase Activity

Aliphatic Dicarboxylate Ligands Assemble Weakly Coupled Molecular Pairs of [MnIII]2 Units

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New Dinuclear Mn^III Compounds with 2‐MeC₆H₄COO and 2‐FC₆H₄COO Bridges – Effect of Terminal Monodentate Ligands (H₂O, ClO₄^– and NO₃^–) on the Magnetic Properties

New Dinuclear Mn^III Compounds with 2‐MeC₆H₄COO and 2‐FC₆H₄COO Bridges – Effect of Terminal Monodentate Ligands (H₂O, ClO₄^– and NO₃^–) on the Magnetic Properties

Dinuclear Mn^III Compounds [{Mn(bpy)(H₂O)}₂(μ‐4‐RC₆H₄COO)₂(μ‐O)](NO₃)₂ (R = Me, F, CF₃, MeO, tBu): Effect of the R Group on the Magnetic Properties and the Catalase Activity

Aliphatic Dicarboxylate Ligands Assemble Weakly Coupled Molecular Pairs of [Mn^III]₂ Units