1
|
Zainuri DA, Razak IA, Arshad S. Crystal structure, spectroscopic characterization and DFT study of two new linear fused-ring chalcones. Acta Crystallogr E Crystallogr Commun 2018; 74:1427-1432. [PMID: 30319794 PMCID: PMC6176429 DOI: 10.1107/s2056989018012641] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 09/06/2018] [Indexed: 12/02/2022]
Abstract
The structures of two new anthracenyl chalcones, namely (E)-1-(anthracen-9-yl)-3-(4-nitro-phen-yl)prop-2-en-1-one, C23H15NO3, and (E)-1-(anthracen-9-yl)-3-(4-iodo-phen-yl)prop-2-en-1-one, C23H15IO are reported. A structural comparative study between the two chalcones was performed and some effects on the geometrical parameters, such as planarity and dihedral angles, are described. The mol-ecular geometry was determined by single-crystal X-ray diffraction, and density functional theory (DFT) at B3LYP with the 6-311++G(d,p) basis set was applied to optimize the ground-state geometry. In addition, inter-molecular inter-actions responsible for the crystal packing were analysed. The electronic properties, such as excitation energies and HOMO-LUMO energies were calculated by time-dependent density functional theory (TD-DFT) and the results complement the experimental findings. The mol-ecular electrostatic potential (MEP) was also investigated at the same level of theory in order to identify and qu-antify the possible reactive sites.
Collapse
Affiliation(s)
- Dian Alwani Zainuri
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Ibrahim Abdul Razak
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Suhana Arshad
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| |
Collapse
|
2
|
Zainuri DA, Razak IA, Arshad S. Crystal structures, DFT studies and UV-visible absorption spectra of two anthracenyl chalcone derivatives. Acta Crystallogr E Crystallogr Commun 2018; 74:1491-1496. [PMID: 30319808 PMCID: PMC6176452 DOI: 10.1107/s2056989018013087] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 09/15/2018] [Indexed: 11/24/2022]
Abstract
The crystal structures of (E)-1-(anthracen-9-yl)-3-(3H-indol-2-yl)prop-2-en-1-one, C25H17NO, and (E)-1-(anthracen-9-yl)-3-[4-(di-methyl-amino)-naphthalen-1-yl]prop-2-en-1-one, C29H23NO, are reported. In each case the anthracene ring system and pendant ring system are almost perpendicular to each other [dihedral angles = 75.57 (7)° and 70.26 (10)°, respectively]. In the extended structures, weak N-H⋯O, C-H⋯O and C-H⋯π inter-actions influence the centrosymmetric crystal packing. Density functional theory calculations were carried out using a 6-311 G++(d,p) basis set and the calculated structures are in good agreement with the crystal structures. The compounds were also characterized by UV-Vis absorption spectroscopy and the smallest (HOMO-LUMO) energy gaps of 2.89 and 2.54 eV indicate the enhanced non-linear responses (inter-molecular charge transfers) of these systems.
Collapse
Affiliation(s)
- Dian Alwani Zainuri
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Ibrahim Abdul Razak
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Suhana Arshad
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| |
Collapse
|
3
|
Zainuri DA, Razak IA, Arshad S. Mol-ecular structure, DFT studies and UV-Vis absorption of two new linear fused ring chalcones: ( E)-1-(anthracen-9-yl)-3-(2-meth-oxy-phen-yl)prop-2-en-1-one and ( E)-1-(anthracen-9-yl)-3-(3-fluoro-4-meth-oxy-phen-yl)prop-2-en-1-one. Acta Crystallogr E Crystallogr Commun 2018; 74:1087-1092. [PMID: 30116568 PMCID: PMC6072983 DOI: 10.1107/s205698901800974x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 07/09/2018] [Indexed: 11/10/2022]
Abstract
The title compounds, C24H18O2 and C24H17FO2, were synthesized using the Claisen-Schmidt condensation method and characterized by UV-Vis spectroscopy. Weak inter-molecular C-H⋯O, C-H⋯π and π-π hydrogen-bonding inter-actions help to stabilize the crystal structures of both compounds. The geometrical parameters obtained from the mol-ecular structure were optimized using density functional theory (DFT) calculations at the B3LYP/6-311++G(d,p) level, showing a good correlation with the experimental results. The small HOMO-LUMO energy gaps of 3.11 and 3.07 eV enhances the non-linear responses of these mol-ecular systems.
Collapse
Affiliation(s)
- Dian Alwani Zainuri
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Ibrahim Abdul Razak
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Suhana Arshad
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| |
Collapse
|
4
|
Zainuri DA, Razak IA, Arshad S. Mol-ecular structure, DFT studies and Hirshfeld analysis of anthracenyl chalcone derivatives. Acta Crystallogr E Crystallogr Commun 2018; 74:780-785. [PMID: 29951229 PMCID: PMC6002829 DOI: 10.1107/s2056989018006527] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 04/27/2018] [Indexed: 11/11/2022]
Abstract
The mol-ecular and crystal structure of two new chalcone derivatives, (E)-1-(anthracen-9-yl)-3-[4-(piperidin-1-yl)phen-yl]prop-2-en-1-one, C28H25NO, (I), and (E)-1-(anthracen-9-yl)-3-[4-(di-phenyl-amino)-phen-yl]prop-2-en-1-one, C35H25NO, (II), with the fused-ring system at the same position are described. In the crystals of (I) and (II), the mol-ecules are linked via C-H⋯O hydrogen bonds into inversion dimers, forming R22(22) and R22(14) ring motifs, respectively. Weak inter-molecular C-H⋯π inter-actions further help to stabilize the crystal structure, forming a two-dimensional architecture. The mol-ecular structures are optimized using density functional theory (DFT) at B3LYP/6-311 G++(d,p) level and compared with the experimental results. The smallest HOMO-LUMO energy gaps of (I) (exp . 2.76 eV and DFT 3.40 eV) and (II) (exp . 2.70 eV and DFT 3.28 eV) indicates the suitability of these crystals in optoelectronic applications. All inter-molecular contacts and weaker contributions involved in the supra-molecular stabilization are investigated using Hirshfeld surface analysis. The mol-ecular electrostatic potential (MEP) further identifies the positive, negative and neutral electrostatic potential regions of the mol-ecules.
Collapse
Affiliation(s)
- Dian Alwani Zainuri
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Ibrahim Abdul Razak
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Suhana Arshad
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| |
Collapse
|
5
|
Zainuri DA, Razak IA, Arshad S. The effect of the fused-ring substituent on anthracene chalcones: crystal structural and DFT studies of 1-(anthracen-9-yl)-3-(naphthalen-2-yl)prop-2-en-1-one and 1-(anthracen-9-yl)-3-(pyren-1-yl)prop-2-en-1-one. Acta Crystallogr E Crystallogr Commun 2018; 74:650-655. [PMID: 29850084 PMCID: PMC5947480 DOI: 10.1107/s2056989018005467] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 04/09/2018] [Indexed: 11/11/2022]
Abstract
The title chalcone compounds, C27H18O (I) and C33H20O (II), were synthesized using a Claisen-Schmidt condensation. Both compounds display an s-trans configuration of the enone moiety. The crystal structures feature inter-molecular C-H⋯O and C-H⋯π inter-actions. Quantum chemical analysis of density functional theory (DFT) with a B3LYP/6-311++G(d,p) basis set has been employed to study the structural properties of the compound. The effect of the inter-molecular inter-actions in the solid state are responsible for the differences between the experimental and theoretical optimized geometrical parameters. The small HOMO-LUMO energy gap in (I) (exp : 3.18 eV and DFT: 3.15 eV) and (II) (exp : 2.76 eV and DFT: 2.95 eV) indicates the suitability of these compounds for optoelectronic applications. The inter-molecular contacts and weak contributions to the supra-molecular stabilization are analysed using Hirshfeld surface analysis.
Collapse
Affiliation(s)
- Dian Alwani Zainuri
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Ibrahim Abdul Razak
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Suhana Arshad
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| |
Collapse
|
6
|
Zainuri DA, Razak IA, Arshad S. ( E)-1,3-Bis(anthracen-9-yl)prop-2-en-1-one: crystal structure and DFT study. Acta Crystallogr E Crystallogr Commun 2018; 74:492-496. [PMID: 29765753 PMCID: PMC5946975 DOI: 10.1107/s2056989018003791] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 03/05/2018] [Indexed: 11/11/2022]
Abstract
The title compound, C31H20O, was synthesized using a Claisen-Schmidt condensation. The enone group adopts an s-trans conformation and the anthracene ring systems are twisted at angles of 85.21 (19) and 83.98 (19)° from the enone plane. In the crystal, mol-ecules are connected into chains along [100] via weak C-H⋯π inter-actions. The observed band gap of 3.03 eV is in excellent agreement with that (3.07 eV) calculated using density functional theory (DFT) at the B3LYP/6-311++G(d,p) level. The Hirshfeld surface analysis indicates a high percentage of C⋯H/H⋯C (41.2%) contacts in the crystal.
Collapse
Affiliation(s)
- Dian Alwani Zainuri
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Ibrahim Abdul Razak
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Suhana Arshad
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| |
Collapse
|