Zinc coordination polymers with rigid dicarboxylates and semirigid 3,5-bis(imidazole-1-yl) pyridine: syntheses, structural topologies, and luminescent properties

Xu, Jiakun; Sun, Xiaochun; Ju, Caixia; Sheng, Jun; Wang, Fang; Sun, Mengtao

doi:10.1080/00958972.2013.809423

Cited by 13 publications

(3 citation statements)

References 32 publications

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“…This result is relevant because we demonstrated that it is possible to promote the synthesis of coordination compounds with supramolecular structures by controlling the concentration of the reactants and pH. The formation of the coordination compounds based on benzimidazoles and amino acid derivatives is important as these compounds have notable chemical and physical behaviors [42,[50][51][52][53][54][55].…”

Section: Resultsmentioning

confidence: 99%

Synthesis and structure of Zn(II) and Cu(II) complexes derived from 2-(aminomethyl)benzimidazole and glycine

Falcón-León

Tlahuext

Lechuga‐Islas

et al. 2014

Journal of Coordination Chemistry

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2014) Synthesis and structure of Zn(II) and Cu(II) complexes derived from 2-(aminomethyl)benzimidazole and glycine, Reactions of 2-(aminomethyl)benzimidazole di-hydrochloride (1·2HCl) and glycine with 3Zn (OH) 2 ·2ZnCO 3 or Cu(OAc) 2 ·H 2 O led to the synthesis of the quaternary coordination complexes 2 and 3. X-ray diffraction showed that these complexes are composed of 2a = [Zn(L)Cl(L′)] and 2b = [Zn(L)(H 2 O) 2 (L′)], and of 3a = [Cu(L)(H 2 O) 0.25 Cl(L′)] and 3b = [Cu(L)(H 2 O) 1.5 (L′)], respectively, where L = 2-(aminomethyl)benzimidazole and L′ = glycinate. Zn(II) in 2a has an intermediate geometry between a square-pyramid and a trigonal bipyramid structure.However, the geometry about the metal ion of units 2b, 3a, and 3b is distorted octahedral. Moreover, the supramolecular structures for 2 and 3 were assembled through N-H⋯O and O-H⋯Cl hydrogen bonds. In these complexes, H 2 O and N-H groups serve as proton donors, whereas chloride and C=O groups serve as proton acceptors. Also π-π stacking interactions between aromatic rings contribute to the stabilization of the supramolecular structure of 2 and 3. The Zn and Cu complexes were studied by infrared and Raman spectroscopy, which indicated that 2 and 3 have similar molecular structures in the solid state. Ultrasound activation at the end of the reaction was necessary to yield 2.

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Section: Resultsmentioning

confidence: 99%

Synthesis and structure of Zn(II) and Cu(II) complexes derived from 2-(aminomethyl)benzimidazole and glycine

Falcón-León

Tlahuext

Lechuga‐Islas

et al. 2014

Journal of Coordination Chemistry

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“…Among them, the newly developed 3,5-bis(imidazole-1-yl)-pyridine (BIP), has been used as a multidentate coordinated ligand to prepare coordination compounds [4][5][6][7][8]. For example, Luo [4] reported six coordination polymers containing BIP molecules, and discussed the influences of the coordination modes, metal ions and counter anions on the crystal structures of these complexes.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of 3,5-bis(imidazole-1-yl)pyridine, C11H9N5

Zhou

2015

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of material 3,5-Bis(imidazole-1-yl)pyridine (BIP) has been prepared by a procedure reported in the literature [4]. Single crystals suitable for X-ray diffraction were obtained by crystallization of the title compound from CH 2 Cl 2 . DiscussionOrganic ligands based on the rigid pyridine and imidazole rings are excellent candidates for the construction of supramolecular architectures, metal-organic frameworks and cocrystals and exhibit diverse coordination modes and desired properties [1][2][3]. Among them, the newly developed 3,5-bis(imidazole-1-yl)-pyridine (BIP), has been used as a multidentate coordinated ligand to prepare coordination compounds [4][5][6][7][8]. For example, Luo [4] reported six coordination polymers containing BIP molecules, and discussed the influences of the coordination modes, metal ions and counter anions on the crystal structures of these complexes. A view on the title molecular structure and the atom numbering is given in the figure. The asymmetric unit contains one molecule of the title compound, which is constructed by one pyridine and two imidazole moieties. All three rings of BIP are exactly not planar, and the angles between the pyridine and imidazole ring planes are 38.30°and 14.12°, respectively, which are larger than those for 2,6-bis(imidazole-1-yl)pyridine [9]. Additionally, the two imidazole rings of BIP are not equivalent expressed by the different bond lengths and angles. The crystal structure of the title compound is stabilized by two weak intermolecular C-H×××N hydrogen bonds, forming a one-dimensional chain along the a axis. Also, adjacent molecules are connected by the weak p×××p interactionst. The centroid-centroid separation between two neighboring pyridine rings is 3.783(4) Å.

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“…The χ M T value of 2 at 300 K is 11.63 cm 3 K mol À 1 (Figure 5), which is obviously larger than the value of 7.50 cm 3 K mol À 1 for four uncoupled Co II (S = 3/2) centers, probably due to the orbital contributions of the metal ions. [58][59][60][61] As the temperature is decreased, the χ M T value increased gradually to a maximum value of 15.24 cm 3 K mol À 1 at 13 K, and then sharply decreased to 11.68 cm 3 K mol À 1 at 2 K. This behavior is indicative of the presence of ferromagnetic exchange interactions between the metal ions. The reciprocal magnetic susceptibilities of 2-300 K follow the Curie-Weiss Law of 1/χ M = (T -θ)/C with Curie constant C = 11.36 cm 3 K mol À 1 and Weiss constant θ = 2.92 K. The positive θ value confirms the weak ferromagnetic Co II ⋅⋅⋅Co II interactions.…”

Section: Magnetic Properties Ofmentioning

confidence: 99%

Tetranuclear Zinc and Cobalt Clusters with Dicubane‐Type Topology: Synthesis, Structures, Luminescent and Magnetic Properties

et al. 2019

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The employment of 1‐((2‐hydroxybenzylidene)amino)‐2,3‐dihydro‐1H‐inden‐2‐ol (H2L) in ZnII and CoII coordination chemistry is reported. Two complexes of compositions [Zn4L4] (1) and [Co4L4] (2) have been synthesized under solvothermal conditions, and fully characterized by X‐ray single crystal diffraction, IR and elemental analysis. They both possess a defect dicubane core. The luminescence studies suggest strong emission for 1 in the solid state at room temperature. Variable temperature (2.0–300 K) magnetic studies for 2 indicate weak ferromagnetic CoII⋅⋅⋅CoII exchange interactions.

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Zinc coordination polymers with rigid dicarboxylates and semirigid 3,5-bis(imidazole-1-yl) pyridine: syntheses, structural topologies, and luminescent properties

Cited by 13 publications

References 32 publications

Synthesis and structure of Zn(II) and Cu(II) complexes derived from 2-(aminomethyl)benzimidazole and glycine

Synthesis and structure of Zn(II) and Cu(II) complexes derived from 2-(aminomethyl)benzimidazole and glycine

Crystal structure of 3,5-bis(imidazole-1-yl)pyridine, C11H9N5

Tetranuclear Zinc and Cobalt Clusters with Dicubane‐Type Topology: Synthesis, Structures, Luminescent and Magnetic Properties

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