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Two Cadmium(II) Complexes Constructed by 2-(3-(Pyridin-2-yl)-1H-pyrazol-1-yl)benzoate: Crystal Structures, Luminescent Properties and Hirshfeld Surface Analyses.

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Title: Two Cadmium(II) Complexes Constructed by 2-(3-(Pyridin-2-yl)-1H-pyrazol-1-yl)benzoate: Crystal Structures, Luminescent Properties and Hirshfeld Surface Analyses.
Authors: Zhang, Li-Yang1,2 (AUTHOR), Lu, Li-Ping1 (AUTHOR) luliping@sxu.edu.cn, Zhu, Miao-Li1,3 (AUTHOR) miaoli@sxu.edu.cn
Source: Journal of Chemical Crystallography. Jun2020, Vol. 50 Issue 2, p122-132. 11p.
Subjects: Benzoic acid, Surface analysis, Luminescence, Benzoates, Crystal structure, Chemical formulas, Cadmium, Surface properties
Abstract: Two cadmium(II) complexes based on 2-(3-(pyridin-2-yl)-1H-pyrazol-1-yl)benzoate with chemical formulas of [Cd2(ppb)4(H2O)2]·8H2O (1) and [Cd(Hppb)I2]n (2) (Hppb = 2-(3-(pyridin-2-yl)-1H-pyrazol-1-yl)benzoic acid), have been synthesized. Both complexes are well characterized by IR, TGA and X-ray single-crystal as well as powder diffraction. Structural analyses reveal that 1 is a binuclear complex and 2 has one-dimensional polymers, respectively, in which they are expanded to three-dimensional supramolecular structures by hydrogen bonds. The Cd(II) coordinated environments in 1 are slightly distorted octahedral geometries, but central atoms in 2 display distorted square pyramidal geometries. There are obvious differences in ligation modes of the ppb− or Hppb ligands for both complexes. In 1, four ppb− ligands are divided into two groups, displaying µ1-kN, N′ and µ2-kN, N′: kO coordination modes. Two ppb− ligands act as two µ1,6-bridges linking the binuclear Cd(II) cations with a distance of 6.282(2) Å. In 2 the neutral Hppb ligands exhibit a µ2-kN, N′: kO coordination mode, and connecting Cd(II) ions by µ1,6-bridges and forming an infinite 1D chain along b axis. Hirshfeld surfaces and fingerprint plots analyses indicate that weak interactions of C–H···π, π···π, O–H···O or O–H···I play important roles in crystal packings of 1 and 2. Luminescent measurements in solid-state show their different intensities in the luminescences of 1 and 2. A binuclear complex [Cd2(ppb)4(H2O)2]·8H2O (1) and a one-dimensional complex [Cd(Hppb)I2]n (2) were synthesized and characterized by X-ray crystal diffraction. Investigation of solid-state luminescence properties indicates the blue shifts of the emission λmax of complexes. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Chemical Crystallography is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Two Cadmium(II) Complexes Constructed by 2-(3-(Pyridin-2-yl)-1H-pyrazol-1-yl)benzoate: Crystal Structures, Luminescent Properties and Hirshfeld Surface Analyses.
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  Data: Two cadmium(II) complexes based on 2-(3-(pyridin-2-yl)-1H-pyrazol-1-yl)benzoate with chemical formulas of [Cd2(ppb)4(H2O)2]·8H2O (1) and [Cd(Hppb)I2]n (2) (Hppb = 2-(3-(pyridin-2-yl)-1H-pyrazol-1-yl)benzoic acid), have been synthesized. Both complexes are well characterized by IR, TGA and X-ray single-crystal as well as powder diffraction. Structural analyses reveal that 1 is a binuclear complex and 2 has one-dimensional polymers, respectively, in which they are expanded to three-dimensional supramolecular structures by hydrogen bonds. The Cd(II) coordinated environments in 1 are slightly distorted octahedral geometries, but central atoms in 2 display distorted square pyramidal geometries. There are obvious differences in ligation modes of the ppb− or Hppb ligands for both complexes. In 1, four ppb− ligands are divided into two groups, displaying µ1-kN, N′ and µ2-kN, N′: kO coordination modes. Two ppb− ligands act as two µ1,6-bridges linking the binuclear Cd(II) cations with a distance of 6.282(2) Å. In 2 the neutral Hppb ligands exhibit a µ2-kN, N′: kO coordination mode, and connecting Cd(II) ions by µ1,6-bridges and forming an infinite 1D chain along b axis. Hirshfeld surfaces and fingerprint plots analyses indicate that weak interactions of C–H···π, π···π, O–H···O or O–H···I play important roles in crystal packings of 1 and 2. Luminescent measurements in solid-state show their different intensities in the luminescences of 1 and 2. A binuclear complex [Cd2(ppb)4(H2O)2]·8H2O (1) and a one-dimensional complex [Cd(Hppb)I2]n (2) were synthesized and characterized by X-ray crystal diffraction. Investigation of solid-state luminescence properties indicates the blue shifts of the emission λmax of complexes. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Group: Ab
  Data: <i>Copyright of Journal of Chemical Crystallography is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1007/s10870-019-00781-w
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 11
        StartPage: 122
    Subjects:
      – SubjectFull: Benzoic acid
        Type: general
      – SubjectFull: Surface analysis
        Type: general
      – SubjectFull: Luminescence
        Type: general
      – SubjectFull: Benzoates
        Type: general
      – SubjectFull: Crystal structure
        Type: general
      – SubjectFull: Chemical formulas
        Type: general
      – SubjectFull: Cadmium
        Type: general
      – SubjectFull: Surface properties
        Type: general
    Titles:
      – TitleFull: Two Cadmium(II) Complexes Constructed by 2-(3-(Pyridin-2-yl)-1H-pyrazol-1-yl)benzoate: Crystal Structures, Luminescent Properties and Hirshfeld Surface Analyses.
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            NameFull: Zhang, Li-Yang
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            NameFull: Lu, Li-Ping
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            NameFull: Zhu, Miao-Li
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            – D: 01
              M: 06
              Text: Jun2020
              Type: published
              Y: 2020
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