Third-order NLO properties of the DMF solutions of 3-D network and 2-D layered organic–metal polymers with (4, 4) grid units

Chang, Qing; Meng, Xiangru; Ye, Song; Hou, Hongwei

doi:10.1016/j.ica.2004.12.021

Cited by 33 publications

(14 citation statements)

References 47 publications

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“…In polymer (II), the Ni1-N and Ni1-O bond lengths (see Table 3) are close to those reported in another Ni II polymer (Chang et al, 2005). The dihedral angle between the imidazole and benzimidazole planes is 85.9 (5) .…”

Section: Tablesupporting

confidence: 83%

Syntheses, structures and characterization of isomorphous Co^II and Ni^II coordination polymers based on 2-[(1H-imidazol-1-yl)methyl]-6-methyl-1H-benzimidazole and benzene-1,4-dicarboxylate

2017

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Careful choice of the organic ligands is one of the most important parameters in the rational design and synthesis of coordination polymers. Aromatic polycarboxylates have been widely used in the preparation of metal-organic polymers since they can utilize various coordination modes to form diverse structures and can act as hydrogen-bond acceptors and donors in the assembly of supramolecular structures. Nitrogen-heterocyclic organic compounds have also been used extensively as ligands for the construction of polymers with interesting structures. In the polymers catena-poly[[[diaquabis{2-[(1H-imidazol-1-yl)methyl]-6-methyl-1H-benzimidazole-κN}cobalt(II)]-μ-benzene-1,4-dicarboxylato-κO:O] dihydrate], {[Co(CHO)(CHN)(HO)]·2HO}, (I), and catena-poly[[[diaquabis{2-[(1H-imidazol-1-yl)methyl]-6-methyl-1H-benzimidazole-κN}nickel(II)]-μ-benzene-1,4-dicarboxylato-κO:O] dihydrate], {[Ni(CHO)(CHN)(HO)]·2HO}, (II), the Co or Ni ion lies on an inversion centre and exhibits a slightly distorted octahedral coordination geometry, coordinated by two N atoms from two imidazole rings and four O atoms from two monodentate carboxylate groups and two water molecules. The dicarboxylate ligands bridge metal ions forming a polymeric chain. The 2-[(1H-imidazol-1-yl)methyl]-6-methyl-1H-benzimidazole ligands coordinate to the Co or Ni centres in monodentate modes through an imidazole N atom and are pendant on opposite sides of the main chain. The two structures are isomorphous. In the crystal, the one-dimensional chains are further connected through O-H...O, O-H...N and N-H...O hydrogen bonds, leading to a three-dimensional supramolecular architecture. In addition, the IR spectroscopic properties, PXRD patterns, thermogravimetric behaviours and fluorescence properties of both polymers have been investigated.

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Section: Tablesupporting

confidence: 83%

Syntheses, structures and characterization of isomorphous Co^II and Ni^II coordination polymers based on 2-[(1H-imidazol-1-yl)methyl]-6-methyl-1H-benzimidazole and benzene-1,4-dicarboxylate

2017

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“…Among multitudinous organic ligands, benzimidazole-containing ligands, in particular, have proven to be good candidates for the construction of novel MOFs due to their remarkable coordination ability and versatile conformations [7][8][9][10]. To date, some bis(benzimidazole) derivatives such as 1,1-(1,4-butanediyl)bis-1H-benzimidazole, 1,1-(1,4-butanediyl) bis(2-methyl-benzimidazole have been reported in the assembly of preparing such crystalline materials [11][12][13][14][15]. However, MOFs constructed from a flexible 1,3-bis(5,6-dimethylbenzimidazol)propane (L) ligand are relatively scarce, in which 5,6-dimethylbenzimidazole serves as an axial ligand for cobalt in vitamin B 12 [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Structural modulation of Co(II) coordination polymers with flexible bis(benzimidazole) and different dicarboxylate ligands

Wang

et al. 2014

Journal of Molecular Structure

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“…13 The parent heterocycle on benzotirzole in its deprotonated form can coordinate with three metal ions and bridged link metal centers in N,Nchelating model. 14,15 In order to inspect the interaction of selenium with metal atoms in a same complex, we are currently engaged in the synthesis of new organoselenium as the ligand and study of the biological activity of the new ligand and its complex.…”

Section: Introductionmentioning

confidence: 99%

The synthesis, crystal structures and SOD activities of a new ligand (L^se) and Co(L^se)₂(SCN)₂ complex [L^se = selenium ether bis‐(N‐1‐methyl‐ benzotriazole)]

Tang

Gao

et al. 2007

Applied Organom Chemis

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A new ligand containing selenium, Se (CH 2 -N-Btrzole) 2 (L se ) (Btrzole = benzotriazole) and its cobalt(II) complex, Co(L se ) 2 (SCN) 2 , have been synthesized and the molecular structures of the title compounds have been determined by X-ray techniques. The L se is a meso-configuration with a symmetric plane through the Se center, the intermolecular weak interactions of Se-Se, Se-N and π -π stacking between benzotriazole rings to extend the molecular structure to two-dimensional network configuration. In the Co(II) complex, the metal center is in a six-coordinated octahedral environment. Two Co(II) atoms are linked by two ligands to form a 20-membered macrocycle; the adjacent macrocycles are linked by coordinated bond of Co-N bentrozole to extend an infinite double strained chain. The SOD activity of the ligand and Co(II) complex have been studied by using the pyrogallol autoxidation method; thermal properties and luminescent properties of Co(II) complex have been tested, and the details of those properties have been discussed.

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Third-order NLO properties of the DMF solutions of 3-D network and 2-D layered organic–metal polymers with (4, 4) grid units

Cited by 33 publications

References 47 publications

Syntheses, structures and characterization of isomorphous Co^II and Ni^II coordination polymers based on 2-[(1H-imidazol-1-yl)methyl]-6-methyl-1H-benzimidazole and benzene-1,4-dicarboxylate

Syntheses, structures and characterization of isomorphous Co^II and Ni^II coordination polymers based on 2-[(1H-imidazol-1-yl)methyl]-6-methyl-1H-benzimidazole and benzene-1,4-dicarboxylate

Structural modulation of Co(II) coordination polymers with flexible bis(benzimidazole) and different dicarboxylate ligands

The synthesis, crystal structures and SOD activities of a new ligand (L^se) and Co(L^se)₂(SCN)₂ complex [L^se = selenium ether bis‐(N‐1‐methyl‐ benzotriazole)]

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Third-order NLO properties of the DMF solutions of 3-D network and 2-D layered organic–metal polymers with (4, 4) grid units

Cited by 33 publications

References 47 publications

Syntheses, structures and characterization of isomorphous CoII and NiII coordination polymers based on 2-[(1H-imidazol-1-yl)methyl]-6-methyl-1H-benzimidazole and benzene-1,4-dicarboxylate

Syntheses, structures and characterization of isomorphous CoII and NiII coordination polymers based on 2-[(1H-imidazol-1-yl)methyl]-6-methyl-1H-benzimidazole and benzene-1,4-dicarboxylate

Structural modulation of Co(II) coordination polymers with flexible bis(benzimidazole) and different dicarboxylate ligands

The synthesis, crystal structures and SOD activities of a new ligand (Lse) and Co(Lse)2(SCN)2 complex [Lse = selenium ether bis‐(N‐1‐methyl‐ benzotriazole)]

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Syntheses, structures and characterization of isomorphous Co^II and Ni^II coordination polymers based on 2-[(1H-imidazol-1-yl)methyl]-6-methyl-1H-benzimidazole and benzene-1,4-dicarboxylate

Syntheses, structures and characterization of isomorphous Co^II and Ni^II coordination polymers based on 2-[(1H-imidazol-1-yl)methyl]-6-methyl-1H-benzimidazole and benzene-1,4-dicarboxylate

The synthesis, crystal structures and SOD activities of a new ligand (L^se) and Co(L^se)₂(SCN)₂ complex [L^se = selenium ether bis‐(N‐1‐methyl‐ benzotriazole)]