A Novel Dimanganese(II) Complex with Two Chloride Bridges − A Two-Electron Oxidation System

Romero, Isabel; Collomb, Marie‐Noëlle; Deronzier, Alain; Llobet, Antoni; Perret, Emmanuel; Pécaut, Jacques; Pape, Laurent Le; Latour, Jean‐Marc

doi:10.1002/1099-0682(20011)2001:1<69::aid-ejic69>3.0.co;2-6

Cited by 67 publications

(41 citation statements)

References 19 publications

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“…The bipyridyl ring vibration bands at 1578 and 1433 cm À 1 for complex were shifted to 1539 and 1411 cm À 1 , respectively; the d(CH) vibration band (841 cm À 1 ) of bipyridyl ring for the complexes was shifted to 786 cm À 1 . These shifts can be explained by the fact that the nitrogen atoms of bipyridyl ring of the H 2 bpdc donate a pair of electrons each to the central metal forming coordinate covalent bond [18,19]. The monodeprotonated form of the molecule seems to be the common isolable form, judging by the broad, relatively low-frequency C¼O stretch in the IR spectrum [20].…”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization and fluorescence studies of a novel europium complex based sensor

Chen

Wang

et al. 2010

Journal of Luminescence

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Section: Resultsmentioning

confidence: 99%

Synthesis, characterization and fluorescence studies of a novel europium complex based sensor

Chen

Wang

et al. 2010

Journal of Luminescence

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“…According to trigonality index parameter τ [ = 0.21 (0.34)] (τ = 0 for an ideal square-pyramid and τ = 1 for an ideal trigonal bipyramid) [ (6) Å. These are as expected from other closely similar manganese(II) compounds with pyridyl and amine donors [40]. It is interesting to note that the closely similar ligand bpea [N,N-bis(2-pyridylmethyl)ethylamine] binds Mn(II) in a facial mode and forms a novel dimanganese(II) complex [(bpea) 2 Mn 2 (µ-Cl) 2 Cl 2 ] with di-µ-chloro-bridged Mn 2 Cl 2 core [40].…”

Section: Synthesis and General Characterizationmentioning

confidence: 95%

“…These are as expected from other closely similar manganese(II) compounds with pyridyl and amine donors [40]. It is interesting to note that the closely similar ligand bpea [N,N-bis(2-pyridylmethyl)ethylamine] binds Mn(II) in a facial mode and forms a novel dimanganese(II) complex [(bpea) 2 Mn 2 (µ-Cl) 2 Cl 2 ] with di-µ-chloro-bridged Mn 2 Cl 2 core [40]. The differing coordinating behavior of otherwise two closely similar ligands can be rationalized if we compare Mn-N/Cl bond distances between the two complexes.…”

Section: Synthesis and General Characterizationmentioning

confidence: 99%

Supramolecular architectures with ladder and lamellar topologies using metal-ligand coordination units via C–H···Cl and O–H···Cl hydrogen bonding

et al. 2006

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New Mn II /Cu II /Zn II complexes [(L 1 )MnCl 2 ] (1), [(L 2 )CuCl 2 ]·0.5H 2 O (2) and [(L 2 )ZnCl(H 2 O)][ClO 4 ] (3), containing (2-pyridyl)alkylamine ligands, N -methyl-N,N-bis(2-pyridylmethyl)amine (L 1 ) and methyl[2-(2-pyridyl)ethyl](2-pyridylmethyl)amine (L 2 ), have been prepared and characterized, including X-ray crystallography. The most striking feature of the structures of these complexes is the formation of molecular ladder and lamellar topology through the crystal packing arrangement, determined by both strong O-H···Cl and weak (however, multiple) C-H···Cl hydrogen-bonding interactions, to maintain the neutral/cationic metal-ligand coordination units linked to each other. In 3, additional secondary interactions are observed involving coordinated solvent and the counter-ion. The results presented here demonstrate that (i) the choice of organic ligands to provide flexibility and inherent potential to participate in hydrogen-bonding interactions, (ii) the coordination geometry preferences of metal ions, (iii) the number of metal-bound chloride ion and (iv) the presence of solvent/counter-anion have a great influence on supramolecular network topology.

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“…In our case, the H4L NMR-1 H spectrum changes drastically when coordinated to Mn(II), (III), (IV). According to the Mixed-valence Mn ion complexes have been studied deeply by various spectroscopies [62][63][64]. Many of these reports disregarded the changes in the vibrational information promoted by the differences in the oxidation states.…”

Section: Proton Nuclear Magnetic Resonancementioning

confidence: 99%

Tetramer Compound of Manganese Ions with Mixed Valence [MnII MnIII MnIV] and Its Spatial, Electronic, Magnetic, and Theoretical Studies

et al. 2018

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Using different spectroscopic techniques and computational calculations, we describe the structural and electromagnetic relationship that causes many interesting phenomena within a novel coordination compound with mixed valence manganese (II, III and IV) in its crystal and powder state. The novel compound [MnII MnIII MnIV(HL)2(H2L)2(H2O)4](NO3)2(H2O) 1 was obtained with the Schiff base (E)-2-((2-hydroxybenzylidene)amine)-2-(hydroximethyl)propane-1,3-diol, (H4L), and Mn(NO3)2.4H2O. The coordination reaction was promoted by the deprotonation of the ligand by the soft base triethylamine. The paper’s main contribution is the integration of the experimental and computational studies to explain the interesting magnetic behavior that the mixed valence manganese multimetallic core shows. The results presented herein, which are rarely found for Mn(II), (III) and (IV) complexes, will contribute to the understanding of the magnetic communication generated by the valence electrons and its repercussion in the local geometry and in the overall crystalline structure.

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A Novel Dimanganese(II) Complex with Two Chloride Bridges − A Two-Electron Oxidation System

Abstract: A new kind of binuclear µ-chloro complex of manganese with two bpea ligands [bpea = N,N-bis(2-pyridyl methyl) ethylamine] has been synthesized and structurally character-

Cited by 67 publications

References 19 publications

Synthesis, characterization and fluorescence studies of a novel europium complex based sensor

Synthesis, characterization and fluorescence studies of a novel europium complex based sensor

Supramolecular architectures with ladder and lamellar topologies using metal-ligand coordination units via C–H···Cl and O–H···Cl hydrogen bonding

Tetramer Compound of Manganese Ions with Mixed Valence [MnII MnIII MnIV] and Its Spatial, Electronic, Magnetic, and Theoretical Studies

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