Syntheses, Crystal Structures and Magnetic Properties of 4,4′‐Bipyridine Bridged Dinuclear MnII and NiII Complexes with the Ligand BMA [BMA = N,N‐bis(benzimidazol‐2‐yl‐methyl)amine]

Liu, Yan‐Zhao; Su, Qiaojuan; Qiao, Xuguang; Xie, Cheng‐Zhi; Ouyang, Yan; Xu, Jing‐Yuan; Liao, Dai‐Zheng; Yan, Shi‐Ping

doi:10.1002/zaac.200900344

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…Several nickel(II) complexes with bis(bbma) have been structurally characterized [9]. To the best of our knowledge, only three nickel(II) complexes of bbma containing picolinate, thiocyanate and dicyandiamide as coligands have been reported [10][11][12]. The title compound consists of a neutral [Ni(bbma)(pht)(H 2 O) 2 ] and two methanol molecules.…”

Section: Commentmentioning

confidence: 99%

Crystal structure of diaqua[bis(benzimidazol-2-yl-methyl)amine-κ³ N,N′,N″]-phthalato-κ¹ O-nickel(II)-methanol (1/2), C₂₆H₃₁N₅NiO₈

Chen

Luo

Zhang

et al. 2020

Zeitschrift Für Kristallographie - New Crystal Structures

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Section: Commentmentioning

confidence: 99%

Crystal structure of diaqua[bis(benzimidazol-2-yl-methyl)amine-κ³ N,N′,N″]-phthalato-κ¹ O-nickel(II)-methanol (1/2), C₂₆H₃₁N₅NiO₈

Chen

Luo

Zhang

et al. 2020

Zeitschrift Für Kristallographie - New Crystal Structures

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“…4,4 0 -bpy is used as a rigid spacer in the modular design of coordination networks, [66][67][68][69] but it is known to be a weak transmitter of magnetic interactions, because of (i) large length of the 4,4 0 -bpy bridge, (ii) unfavorable orbital overlap across the bridge, influenced by the torsion angle between the pyridine rings, and (iii) the single C-C bond between the pyridine rings, which suppresses the conjugation of the two halved 4,4 0 -bpy molecules. 70 The importance of the first of these factors should not be overestimated, considering the recent report of measurable magnetic coupling at the CuÁ Á ÁCu distance equal to 22 Å. 71 As can be noticed, the magnetic coupling is generally antiferromagnetic and very weak for 3d ions.…”

Section: Spectroscopic Magnetic and Thermal Studiesmentioning

confidence: 99%

Structural, spectroscopic, magnetic behavior and DFT investigations ofl-tyrosinato nickel(ii) coordination polymer

et al. 2015

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New 1D-coordination polymer {[Ni(L-Tyr) 2 (m-4,4 0 -bpy)]Á4H 2 O} n (1) (L-Tyr = L-tyrosine, 4,4 0 -bpy = 4,4 0 -bipyridine) is composed of L-tyrosinate anions chelated nickel(II) centres via N amino and O carboxylate atoms, whereas the apices of the elongated octahedral coordination sphere are occupied by the N atoms of 4,4 0 -bipyridine. Its molecular structure was determined by single-crystal X-ray diffraction and characterized using vibrational (FT-IR), Raman spectroscopy (FT-Raman), electronic (NIR-Vis-UV) and high field electron paramagnetic resonance (HF-EPR) spectroscopy and thermal (TG-DTA, DSC) and magnetic methods. The tetragonality distortion parameter (T) equals 0.945. The g x , g y and g z parameters (HF-EPR spectra) are slightly temperature dependent and the set g x = 2.178(5), g y = 2.156(4), g z = 2.19(1), D = À5.76(2) cm À1 , E = À0.41(1) cm À1 was found at 5 K. The analysis of the temperature and field dependent magnetization shows the weakness of magnetic interactions in 1.

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Directed assembly and characterization of 1D polymers based on [MII(BMA)]2+ node (M = Cu, Mn, Ni and Zn; BMA = N,N-bis (benzimidazol-2-yl-methyl)amine) with linear bridging dicyanamide and terephthalate ligands

Xie

Xue

et al. 2010

Dalton Trans.

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The directed assembly of N,N-bis(benzimidazol-2-yl-methyl)amine (BMA) with Cu(II), Mn(II), Ni(II) and Zn(II) salts based on dicyanamide (mu(1,5)-dca) and terephthalate (mu-ta) linear bridging ligands, respectively, leads to four novel compounds: [Cu(BMA)(mu(1,5)-dca)(ClO(4))](n) (1), {[Mn(BMA)(mu(1,5)-dca)(CH(3)OH)] x ClO(4) x C(10)H(9)N(3)O x CH(3)OH}(n) (2), {[Ni(2)(BMA)(2)(mu-ta)(mu(1,5)-dca)] x ClO(4) x CH(3)OH x H(2)O}(n) (3), and {[Zn(2)(BMA)(2)(mu-ta)(mu(1,5)-dca)] x ClO(4) x CH(3)OH}(n) (4), which were characterized by single-crystal X-ray diffraction, elemental analysis, IR, fluorescence spectroscopy, and magnetic measurement. X-Ray analysis revealed that 1 and 2 are two infinite 1D coordination polymers, in which dca units serving as an end-to-end out-of-plane bridge bring about linear chains for 1 and zigzag chains for 2. Complexes 3 and 4 are similar, in which the metal atoms are bridged alternately by terephthalate and mu(1,5)-dicyanamide ligands into 1D zigzag chains. In all these complexes, each BMA ligand adopts a tridentate chelating mode to coordinate with a transition metal forming a [M(BMA)](2+) node. Different rigidity bridging ligands together with the stereochemistry and supramolecular effects of benzimidazol planes may result in the dramatic structural changes from 1D to multidimensional networks for all 1-4. Fluorescent measurements established that, in solution, complex 3 displays weak blue luminescence which originates from the BMA but is significantly red-shifted and has a much lower emission intensity, compared to the free BMA ligand. Complex 4 shows stronger luminescence than 3 and still reduces luminescence efficiency compared to the free BMA ligand. The variable-temperature magnetic susceptibility measurements (2-300 K) of 1 and 3 show the dominant weak ferromagnetic interactions between the copper(II) centers with J = 3.02 cm(-1), zJ' = -2.70 cm(-1) for 1, and the nickel(II) centers with J = 1.94 cm(-1), J'; = -0.38 cm(-1) for 3, while weak antiferromagnetic interactions between the Mn(II) centers for 2 with J = -0.27 cm(-1).

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Syntheses, Crystal Structures and Magnetic Properties of 4,4′‐Bipyridine Bridged Dinuclear Mn^II and Ni^II Complexes with the Ligand BMA [BMA = N,N‐bis(benzimidazol‐2‐yl‐methyl)amine]

Cited by 4 publications

References 19 publications

Crystal structure of diaqua[bis(benzimidazol-2-yl-methyl)amine-κ³ N,N′,N″]-phthalato-κ¹ O-nickel(II)-methanol (1/2), C₂₆H₃₁N₅NiO₈

Crystal structure of diaqua[bis(benzimidazol-2-yl-methyl)amine-κ³ N,N′,N″]-phthalato-κ¹ O-nickel(II)-methanol (1/2), C₂₆H₃₁N₅NiO₈

Structural, spectroscopic, magnetic behavior and DFT investigations ofl-tyrosinato nickel(ii) coordination polymer

Directed assembly and characterization of 1D polymers based on [MII(BMA)]2+ node (M = Cu, Mn, Ni and Zn; BMA = N,N-bis (benzimidazol-2-yl-methyl)amine) with linear bridging dicyanamide and terephthalate ligands

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Syntheses, Crystal Structures and Magnetic Properties of 4,4′‐Bipyridine Bridged Dinuclear MnII and NiII Complexes with the Ligand BMA [BMA = N,N‐bis(benzimidazol‐2‐yl‐methyl)amine]

Cited by 4 publications

References 19 publications

Crystal structure of diaqua[bis(benzimidazol-2-yl-methyl)amine-κ3 N,N′,N″]-phthalato-κ1 O-nickel(II)-methanol (1/2), C26H31N5NiO8

Crystal structure of diaqua[bis(benzimidazol-2-yl-methyl)amine-κ3 N,N′,N″]-phthalato-κ1 O-nickel(II)-methanol (1/2), C26H31N5NiO8

Structural, spectroscopic, magnetic behavior and DFT investigations ofl-tyrosinato nickel(ii) coordination polymer

Directed assembly and characterization of 1D polymers based on [MII(BMA)]2+ node (M = Cu, Mn, Ni and Zn; BMA = N,N-bis (benzimidazol-2-yl-methyl)amine) with linear bridging dicyanamide and terephthalate ligands

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Syntheses, Crystal Structures and Magnetic Properties of 4,4′‐Bipyridine Bridged Dinuclear Mn^II and Ni^II Complexes with the Ligand BMA [BMA = N,N‐bis(benzimidazol‐2‐yl‐methyl)amine]

Crystal structure of diaqua[bis(benzimidazol-2-yl-methyl)amine-κ³ N,N′,N″]-phthalato-κ¹ O-nickel(II)-methanol (1/2), C₂₆H₃₁N₅NiO₈

Crystal structure of diaqua[bis(benzimidazol-2-yl-methyl)amine-κ³ N,N′,N″]-phthalato-κ¹ O-nickel(II)-methanol (1/2), C₂₆H₃₁N₅NiO₈