Academic Journal
Synthesis and Characterization of Cu-Containing Chiral Metal Halides and Role of Halogenation of the Organic Ligand
| العنوان: | Synthesis and Characterization of Cu-Containing Chiral Metal Halides and Role of Halogenation of the Organic Ligand |
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| المؤلفون: | Andrea Dibenedetto, Clarissa Coccia, Massimo Boiocchi, Marco Moroni, Chiara Milanese, Lorenzo Malavasi |
| سنة النشر: | 2024 |
| مصطلحات موضوعية: | Biochemistry, Genetics, Immunology, Computational Biology, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Physical Sciences not elsewhere classified, two chiral samples, circular dichroism response, benzylammonium ], together, actual novel samples, 4 -( chloromethyl, 2 space group, 76 ev ), corresponding racemic compound, benzene ring halogenation, anisotropy factor values, 4 , 2 , racemic compound, anisotropy factor, 50 ev, r <, c <, b <, visible region, tetrahedra crystallizing, strong reduction, significant absorption |
| الوصف: | We report herein novel chiral copper metal chlorides, namely, ( R / S -ClMBA) 2 CuCl 4 [ClMBA = 4-(chloromethyl)benzylammonium], together with the corresponding racemic compound. The two chiral samples are composed of isolated CuCl 4 tetrahedra crystallizing in the noncentrosymmetric C 2 space group and present a significant absorption in the visible region of the spectrum with a band gap around 2.50 eV. The racemic compound, on the other hand, gives origin to a different structural topology characterized by the presence of a quite unusual five coordination for Cu(II), with Cu 2 Cl 6 – dimers forming infinite chains along the b axis and presents, in addition, a strong reduction of the band gap (around 1.76 eV). The two chiral samples display a circular dichroism response with anisotropy factor values of around 0.02. The actual novel samples are investigated in comparison to the MBA-based (MBA = methylbenzylammonium) system in order to unveil the effect of benzene ring halogenation on the structural and chiroptical properties, indicating that the presence of chlorine leads to a doubling of the anisotropy factor. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| Relation: | https://figshare.com/articles/journal_contribution/Synthesis_and_Characterization_of_Cu-Containing_Chiral_Metal_Halides_and_Role_of_Halogenation_of_the_Organic_Ligand/25360244 |
| DOI: | 10.1021/acs.jpcc.4c00150.s001 |
| الاتاحة: | https://doi.org/10.1021/acs.jpcc.4c00150.s001 https://figshare.com/articles/journal_contribution/Synthesis_and_Characterization_of_Cu-Containing_Chiral_Metal_Halides_and_Role_of_Halogenation_of_the_Organic_Ligand/25360244 |
| Rights: | CC BY-NC 4.0 |
| رقم الانضمام: | edsbas.B3ACDC3D |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acs.jpcc.4c00150.s001 |
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