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Synthesis and Structure Elucidation of Novel Spirooxindole Linked to Ferrocene and Triazole Systems via [3 + 2] Cycloaddition Reaction. Molecules 2022; 27:molecules27134095. [PMID: 35807340 PMCID: PMC9268063 DOI: 10.3390/molecules27134095] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 06/20/2022] [Accepted: 06/23/2022] [Indexed: 12/23/2022] Open
Abstract
In the present work, a novel heterocyclic hybrid of a spirooxindole system was synthesized via the attachment of ferrocene and triazole motifs into an azomethine ylide by [3 + 2] cycloaddition reaction protocol. The X-ray structure of the heterocyclic hybrid (1″R,2″S,3R)-2″-(1-(3-chloro-4-fluorophenyl)-5-methyl-1H-1,2,3-triazole-4-carbonyl)-5-methyl-1″-(ferrocin-2-yl)-1″,2″,5″,6″,7″,7a″-hexahydrospiro[indoline-3,3″-pyrrolizin]-2-one revealed very well the expected structure, by using different analytical tools (FTIR and NMR spectroscopy). It crystallized in the triclinic-crystal system and the P-1-space group. The unit cell parameters are a = 9.1442(2) Å, b = 12.0872(3) Å, c = 14.1223(4) Å, α = 102.1700(10)°, β = 97.4190(10)°, γ = 99.1600(10)°, and V = 1484.81(7) Å3. There are two molecules per unit cell and one formula unit per asymmetric unit. Hirshfeld analysis was used to study the molecular packing of the heterocyclic hybrid. H···H (50.8%), H···C (14.2%), Cl···H (8.9%), O···H (7.3%), and N···H (5.1%) are the most dominant intermolecular contacts in the crystal structure. O···H, N···H, H···C, F···H, F···C, and O···O are the only contacts that have the characteristic features of short and significant interactions. AIM study indicated predominant covalent characters for the Fe–C interactions. Also, the electron density (ρ(r)) at the bond critical point correlated inversely with the Fe–C distances.
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2
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Synthesis, X-ray, Hirshfeld, and AIM Studies on Zn(II) and Cd(II) Complexes with Pyridine Ligands. CRYSTALS 2022. [DOI: 10.3390/cryst12050590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The synthesis and crystal structures of three heteroleptic complexes of Zn(II) and Cd(II) with pyridine ligands (ethyl nicotinate (EtNic), N,N-diethylnicotinamide (DiEtNA), and 2-amino-5-picoline (2Ampic) are presented. The complex [Zn(EtNic)2Cl2] (1) showed a distorted tetrahedral coordination geometry with two EtNic ligand units and two chloride ions as monodentate ligands. Complexes [Zn(DiEtNA)(H2O)4(SO4)]·H2O (2) and [Cd(OAc)2(2Ampic)2] (3) had hexa-coordinated Zn(II) and Cd(II) centers. In the former, the Zn(II) was coordinated with three different monodentate ligands, which were DiEtNA, H2O, and SO42−. In 3, the Cd(II) ion was coordinated with two bidentate acetate ions and two monodentate 2Ampic ligand units. The supramolecular structures of the three complexes were elucidated using Hirshfeld analysis. In 1, the most important interactions that governed the molecular packing were O···H (15.5–15.6%), Cl···H (13.6–13.8%), Cl···C (6.3%), and C···H (10.3–10.6%) contacts. For complexes 2 and 3, the H···H, O···H, and C···H contacts dominated. Their percentages were 50.2%, 41.2%, and 7.1%, respectively, for 2 and 57.1%, 19.6%, and 15.2%, respectively, for 3. Only in complex 3, weak π-π stacking interactions between the stacked pyridines were found. The Zn(II) natural charges were calculated using the DFT method to be 0.8775, 1.0559, and 1.2193 for complexes 1–3, respectively. A predominant closed-shell character for the Zn–Cl, Zn–N, Zn–O, Cd–O, and Cd–N bonds was also concluded from an atoms in molecules (AIM) study.
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3
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Stereoselective synthesis, structural determination, computational studies and antimicrobial activity of novel class of spiropyrroloquinoxaline engrafted ferrocenoindole hybrid heterocycle. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Molecular, Supramolecular Structures Combined with Hirshfeld and DFT Studies of Centrosymmetric M(II)-azido {M=Ni(II), Fe(II) or Zn(II)} Complexes of 4-Benzoylpyridine. Symmetry (Basel) 2021. [DOI: 10.3390/sym13112026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The supramolecular structures of the three metal (II) azido complexes [Fe(4bzpy)4(N3)2]; 1, [Ni(4bzpy)4(N3)2]; 2 and [Zn(4bzpy)2(N3)2]n; 3 with 4-benzoylpyridine (4bzpy) were presented. All complexes contain hexa-coordinated divalent metal ions with a slightly distorted octahedral MN6 coordination sphere. Complexes 1 and 2 are monomeric with terminal azido groups while 3 is one-dimensional coordination polymer containing azido groups with μ(1,1) and μ(1,3) bridging modes of bonding. Hirshfeld analysis was used to quantitatively determine the different contacts affecting the molecular packing in the studied complexes. The most common interactions are the polar O…H and N…H interactions and the hydrophobic C…H contacts. The charges at the M(II) sites are calculated to be 1.004, 0.847, and 1.147 e for complexes 1–3, respectively. The degree of asymmetry is the highest in the case of the terminal azide in complexes 1 and 2 while was found the lowest in the μ(1,1) and μ(1,3) azide bonding modes in the Zn(II) complex 3. These facts were further explained in terms of atoms in molecules (AIM) topological parameters.
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Arumugam N, Almansour AI, Kumar RS, Soliman SM, Viswanathan E, Dege N, Karuppiah P, Al-Dhabi NA. Synthesis, X-ray structural determination and biological evaluation of novel ferrocene grafted spiroquinoxalinopyrrolidine. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mechachti F, Lakehal S, Lakehal A, Morell C, Merzoud L, Chermette H. Predicted structure and selectivity of 3d transition metal complexes with glutamic N, N-bis(carboxymethyl) acid. NEW J CHEM 2021. [DOI: 10.1039/d1nj03298d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structure and selectivity of 3d transition metal complexes with glutamic N,N-bis(carboxymethyl) acid are analyzed and predicted from DFT calculations.
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Affiliation(s)
- Fatima Mechachti
- Laboratoire de Chimie des Matériaux et des Vivants, Activité & Réactivité, Université Batna1, Batna, Algerie
| | - Salima Lakehal
- Laboratoire de Chimie des Matériaux et des Vivants, Activité & Réactivité, Université Batna1, Batna, Algerie
- Institut des Sciences de La Terre et de L'univers, Université de Batna2, Batna, Algerie
| | - Aicha Lakehal
- Faculté des Sciences Techniques, Université de Batna2, Batna, Algerie
| | - Christophe Morell
- Université de Lyon, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR CNRS 5280, 69622 Villeurbanne Cedex, France
| | - Lynda Merzoud
- Université de Lyon, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR CNRS 5280, 69622 Villeurbanne Cedex, France
| | - Henry Chermette
- Université de Lyon, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR CNRS 5280, 69622 Villeurbanne Cedex, France
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Kowalik M, Brzeski J, Gawrońska M, Kazimierczuk K, Makowski M. Experimental and theoretical investigation of conformational states and noncovalent interactions in crystalline sulfonamides with a methoxyphenyl moiety. CrystEngComm 2021. [DOI: 10.1039/d1ce00869b] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The conformational and noncovalent interaction properties of sulfonamides with a methoxyphenyl moiety were examined by both experimental and theoretical methods.
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Affiliation(s)
- Mateusz Kowalik
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Jakub Brzeski
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Małgorzata Gawrońska
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Katarzyna Kazimierczuk
- Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Mariusz Makowski
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
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Soliman SM, Haukka M, Al-Rasheed HH, El-Faham A. Molecular and supramolecular structures of self-assembled Cu(II) and Co(II) complexes with 4,4’-[6-(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazine-2,4-diyl]dimorpholine ligand. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Dinuclear uranyl coordination compound: Structural investigations and selective fluorescence sensing properties. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114745] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Lasri J, Al-Rasheed HH, El-Faham A, Haukka M, Abutaha N, Soliman SM. Synthesis, structure and in vitro anticancer activity of Pd(II) complexes of mono- and bis-pyrazolyl-s-triazine ligands. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Soliman SM, Elsilk SE, El-Faham A. Syntheses, structure, Hirshfeld analysis and antimicrobial activity of four new Co(II) complexes with s-triazine-based pincer ligand. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119753] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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12
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Soliman SM, Elsilk SE, El-Faham A. Synthesis, structure and biological activity of zinc(II) pincer complexes with 2,4-bis(3,5-dimethyl-1H-pyrazol-1-yl)-6-methoxy-1,3,5-triazine. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119627] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Soliman SM, El‐Faham A, El Silk SE. Novel one‐dimensional polymeric Cu(II) complexes via Cu(II)‐assisted hydrolysis of the 2,4‐
bis
(3,5‐dimethyl‐1
H
‐pyrazol‐1‐yl)‐6‐methoxy‐1,3,5‐triazine pincer ligand: Synthesis, structure, and antimicrobial activities. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5941] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Saied M. Soliman
- Department of Chemistry, Faculty of Science Alexandria University PO Box 426, Ibrahimia Alexandria 21321 Egypt
| | - Ayman El‐Faham
- Department of Chemistry, Faculty of Science Alexandria University PO Box 426, Ibrahimia Alexandria 21321 Egypt
- Department of Chemistry College of Science King Saud University, PO Box 2455 Riyadh 11451 Saudi Arabia
| | - Sobhy E. El Silk
- Bacteriology Unit, Botany Department, Faculty of Science Tanta University Tanta 31527 Egypt
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Hudson HR, Tajti Á, Bálint E, Czugler M, Karaghiosoff K, Keglevich G. Microwave-assisted synthesis of α-aminophosphonates with sterically demanding α-aryl substituents. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2019.1679186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Harry R. Hudson
- Faculty of Life Sciences and Computing, London Metropolitan University, London, UK
| | - Ádám Tajti
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Erika Bálint
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Mátyás Czugler
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | | | - György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
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Barakat A, Soliman SM, Ali M, Elmarghany A, Al-Majid AM, Yousuf S, Ul-Haq Z, Choudhary MI, El-Faham A. Synthesis, crystal structure, evaluation of urease inhibition potential and the docking studies of cobalt(III) complex based on barbituric acid Schiff base ligand. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119405] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Synthesis, X-ray Crystal Structure and Antimicrobial Activity of Unexpected Trinuclear Cu(II) Complex from s-Triazine-Based Di-Compartmental Ligand via Self-Assembly. CRYSTALS 2019. [DOI: 10.3390/cryst9120661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The synthesis and X-ray crystal structure of the trinuclear [Cu3(HL)(Cl)2(NO3)(H2O)5](NO3)2 complex of the s-triazine-based di-compartmental ligand, 2-methoxy-4,6-bis(2-(pyridin-2-ylmsethylene)hydrazinyl)-1,3,5-triazine (H2L), are presented. The Cu1 and Cu2 are penta-coordinated with CuN3ClO coordination environment, distorted square pyramidal coordination geometry while Cu3 is hexa-coordinated with CuN2O4 coordination sphere, and distorted octahedral geometry. The complex crystallized in the primitive P-1 triclinic crystal system with two molecular units per unit cell. Its packing is dominated by the O–H (35.5%) and Cl–H (8.8%) hydrogen bonding interactions as well as the π–π stacking (2.3%) and anion–π-stacking interactions (3.7%). The different coordination interactions were analyzed using atoms in molecules (AIM) theory, and the number of charge transferences from the ligand group to Cu(II) were determined using natural bond orbital calculations. The effect of the free ligand and its Cu(II) complex on the tested pathogenic microbes (Staphylococcus aureus, S. epidermidis, Enterococcus faecalis, Escherichia coli, Salmonella typhi and Pseudomonas aeruginosa) and one fungal isolate (Candida albicans) is presented. Both have wide spectrum antimicrobial activity against the selected microorganism. It is observed that the free ligand at 180 µg/mL was more effective than its Cu(II) complex and showed close results compared to the positive control gentamicin. At higher concentrations (1 mg/mL), the Cu(II) complex was found to be more active against S. epidermidis, E. coli and C. albicans than the lower concentration. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values are also lower for the Cu(II) complex than the free ligand.
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Bis-pyrazolyl-s-triazine Ni(II) pincer complexes as selective gram positive antibacterial agents; synthesis, structural and antimicrobial studies. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.05.103] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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18
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Soliman SM, El-Faham A. Synthesis, molecular structure and DFT studies of two heteroleptic nickel(II) s-triazine pincer type complexes. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.089] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Synthesis, Molecular and Supramolecular Structures of New Cd(II) Pincer-Type Complexes with s-TriazineCore Ligand. CRYSTALS 2019. [DOI: 10.3390/cryst9050226] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The manuscript described the synthesis and characterization of the new [Cd(BDMPT)2](ClO4)2; 1 and [Cd2(MBPT)2(H2O)2Cl](ClO4)3.4H2O ; 2s-triazine pincer-type complexes, where BDMPT and MBPT are 2,4-bis(3,5-dimethyl-1H-pyrazol-1-yl)-6-methoxy-1,3,5-triazine and 2-methoxy-4,6-bis(2-(pyridin-2-ylmsethylene)hydrazinyl)-1,3,5-triazinerespectively.The synthesized complexes were characterized using Fourier-transform infrared spectroscopy (FTIR), 1H and 13C NMR spectroscopy, and the single-crystal X-ray diffraction technique.The homoleptic mononuclear complex (1)contains a hexa-coordinated Cd(II) center with two tridentate N-pincer ligand (BDMPT) with a highly distorted octahedral coordination environment located as an intermediate case between the octahedron and trigonal prism. The heteroleptic dinuclear complex (2) contains two hepta-coordinated Cd(II) coordination spheres where each Cd(II) is coordinated with one pentadentate pincer N-chelate (MBPT), one water, and one bridged chloride ligand connecting the two metal ions. The different intermolecular interactions in the studied complexes were quantified using Hirshfeld analysis. Their thermal stabilities and FTIR spectra were compared with the corresponding free ligands. The strength and nature of Cd–N, Cd–O, and Cd–Cl coordination interactions were discussed in light of atoms in molecules calculations (AIM). The M(II)–BDMPT and M(II)–MBPT interaction energies revealed that such sterically hindered ligands have higher affinity toward large-size metal ions (M =Cd) compared to smaller ones (M= Ni or Mn).
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Soliman SM, El-Faham A. Synthesis and structure diversity of high coordination number Cd(II) complexes of large s-triazine bis-Schiff base pincer chelate. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.01.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Combined QTAIM and ETS-NOCV investigation of the interactions in Cl nM[PhB(N tBu) 2] complexes with M = Si & Ge (n = 0), As & Sb (n = 1), Te & Po (n = 2). J Mol Model 2018; 24:327. [PMID: 30370435 DOI: 10.1007/s00894-018-3852-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 10/04/2018] [Indexed: 10/28/2022]
Abstract
In this work, the nature of the chemical interactions between the metalloid atom (M = Si, Ge, As, Sb, Te, Po) and the nitrogen atoms in the bora-amidinate (bam) complexes (ClnM[PhB(NtBu)2]) are investigated, mainly via density-based indices. The descriptors used are derived using the quantum theory of atoms in molecules and natural orbitals for chemical valence approaches. It is shown that the strongest interaction is achieved with silicon. Indeed, it is generally the lightest metalloid in a particular group of the periodic table (i.e., Si, As, and Te for groups 14-16, respectively) that exhibits the strongest bond in the bam complex. This suggests that the atomic radius of the metalloid is a useful parameter for predicting the bonding strength. Extended transition state (ETS) decomposition results indicate that the interactions are more electrostatic than due to orbital interactions.
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Synthesis, X-ray structure, DFT and antimicrobial studies of Ag(I) complexes with nicotinic acid derivatives. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 187:48-53. [DOI: 10.1016/j.jphotobiol.2018.07.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/18/2018] [Accepted: 07/29/2018] [Indexed: 01/21/2023]
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23
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Dutta D, Chetry S, Gogoi A, Choudhury B, Guha AK, Bhattacharyya MK. Supramolecular association involving anion–π interactions in Cu(II) coordination solids: Experimental and theoretical studies. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.05.039] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Soliman SM, El-Faham A, Elsilk SE, Farooq M. Two heptacoordinated manganese(II) complexes of giant pentadentate s -triazine bis -Schiff base ligand: Synthesis, crystal structure, biological and DFT studies. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.04.043] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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25
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One pot synthesis of two Mn(II) perchlorate complexes with s -triazine NNN -pincer ligand; molecular structure, Hirshfeld analysis and DFT studies. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.03.037] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Soliman SM, El-Faham A. Synthesis, characterization, and structural studies of two heteroleptic Mn(II) complexes with tridentate N,N,N-pincer type ligand. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1475660] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Saied M. Soliman
- Department of Chemistry, Rabigh College of Science and Art, King Abdulaziz University, Jeddah, Saudi Arabia
- Faculty of Science, Department of Chemistry, Alexandria University, Alexandria, Egypt
| | - Ayman El-Faham
- Faculty of Science, Department of Chemistry, Alexandria University, Alexandria, Egypt
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
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Varadwaj A, Varadwaj PR, Marques HM, Yamashita K. Revealing Factors Influencing the Fluorine-Centered Non-Covalent Interactions in Some Fluorine-Substituted Molecular Complexes: Insights from First-Principles Studies. Chemphyschem 2018; 19:1486-1499. [PMID: 29569853 DOI: 10.1002/cphc.201800023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Indexed: 01/13/2023]
Abstract
We examine the equilibrium structure and properties of six fully or partially fluorinated hydrocarbons and several of their binary complexes using computational methods. In the monomers, the electrostatic surface of the fluorine is predicted to be either entirely negative or weakly positive. However, its lateral sites are always negative. This enables the fluorine to display an anisotropic distribution of charge density on its electrostatic surface. While this is the electrostatic surface scenario of the fluorine atom, its negative sites in some of these monomers are shown to have the potential to engage in attractive engagements with the negative site(s) on the same atom in another molecule of the same type, or a molecule of a different type, to form bimolecular complexes. This is revealed by analyzing the results of current state-of-the-art computational approaches such as DFT, together with those obtained from the quantum theory of atoms in molecules, molecular electrostatic surface potential and symmetry adapted perturbation theories. We demonstrate that the intermolecular interaction energy arising in part from the universal London dispersion, which has been underappreciated for decades, is an essential factor in explaining the attraction between the negative sites, although energy arising from polarization strengthens the extent of the intermolecular interactions in these complexes.
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Affiliation(s)
- Arpita Varadwaj
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo 7-3-1, Hongo, Bunkyo-ku, Japan 113-8656, and CREST-JST, 7 Gobancho, Chiyoda-ku, Tokyo, Japan 102-0076
| | - Pradeep R Varadwaj
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo 7-3-1, Hongo, Bunkyo-ku, Japan 113-8656, and CREST-JST, 7 Gobancho, Chiyoda-ku, Tokyo, Japan 102-0076
| | - Helder M Marques
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg, 2050, South Africa
| | - Koichi Yamashita
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo 7-3-1, Hongo, Bunkyo-ku, Japan 113-8656, and CREST-JST, 7 Gobancho, Chiyoda-ku, Tokyo, Japan 102-0076
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Non-Covalent Interactions in Hydrogen Storage Materials LiN(CH3)2BH3 and KN(CH3)2BH3. CRYSTALS 2016. [DOI: 10.3390/cryst6030028] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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Matczak P. Intramolecular C–H···H–C Contacts in Diheteroaryl Ketones and Thioketones: A Theoretical Analysis. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20150229] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Piotr Matczak
- Department of Theoretical and Structural Chemistry, Faculty of Chemistry, University of Łódź
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30
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Varadwaj PR, Varadwaj A, Jin BY. Hexahalogenated and their mixed benzene derivatives as prototypes for the understanding of halogen···halogen intramolecular interactions: New insights from combined DFT, QTAIM-, and RDG-based NCI analyses. J Comput Chem 2015; 36:2328-43. [DOI: 10.1002/jcc.24211] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 08/28/2015] [Accepted: 08/31/2015] [Indexed: 01/21/2023]
Affiliation(s)
| | - Arpita Varadwaj
- Department of Chemistry; National Taiwan University; Taipei 10617 Taiwan
| | - Bih-Yaw Jin
- Department of Chemistry; National Taiwan University; Taipei 10617 Taiwan
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31
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Łukomska M, Rybarczyk-Pirek AJ, Jabłoński M, Palusiak M. The nature of NO-bonding in N-oxide group. Phys Chem Chem Phys 2015; 17:16375-87. [PMID: 26051488 DOI: 10.1039/c5cp02148k] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The nature of the NO-bond in the N-oxide group was investigated by means of combined theoretical calculations (including QTAIM and NBO approaches) and statistical analyses of the contents of crystal structure databases. The N-O bond in the N-oxide group should be classified as the NO donating bond with an important contribution of ON back-donation (of the π-electron type, when available). The visualization of the Laplacian of electron density in the region of an oxygen valence sphere suggests the presence of two lone pairs for the imine-N-oxide group (characterized by effective ON back-donation). A detailed bonding analysis performed by means of natural resonance theory indicates that the N→O bond is of an order of magnitude clearly greater than 1. In addition, the stability of the N→O bond in various N-oxides was estimated. The analyses of the hydrogen- and halogen-bonded complexes of the N-oxides reveal strong Lewis basicity of the N-oxide group. The formation of H- and X-bonding leads to N→O bond elongation due to its structural, topological and spectroscopic characteristics. Moreover, in pyridine-N-oxide, the electron-withdrawing -NO2 group additionally stabilizes the N→O bond, whereas the opposite effect can be observed for the electron-donating-NH2 substituent. This is due to a substituent effect on the π-type ON back-donation. As a result, the oxygen atom in pyridine-N-oxide may change its availability during intermolecular interaction formation, as revealed in the interaction energy, which changes by about half of the estimated total interaction energy.
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Affiliation(s)
- Marlena Łukomska
- Department of Theoretical and Structural Chemistry, Faculty of Chemistry, University of Łódź, 163/165 Pomorska St., 90-236 Łódź, Poland.
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32
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Synthesis, crystal structure, antimicrobial screening and density functional theory calculation of nickel(II), cobalt(II) and zinc(II) mononuclear Schiff base complexes. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.10.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Monteiro NKV, Firme CL. Hydrogen-hydrogen bonds in highly branched alkanes and in alkane complexes: A DFT, ab initio, QTAIM, and ELF study. J Phys Chem A 2014; 118:1730-40. [PMID: 24533436 DOI: 10.1021/jp500131z] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The hydrogen-hydrogen (H-H) bond or hydrogen-hydrogen bonding is formed by the interaction between a pair of identical or similar hydrogen atoms that are close to electrical neutrality and it yields a stabilizing contribution to the overall molecular energy. This work provides new, important information regarding hydrogen-hydrogen bonds. We report that stability of alkane complexes and boiling point of alkanes are directly related to H-H bond, which means that intermolecular interactions between alkane chains are directional H-H bond, not nondirectional induced dipole-induced dipole. Moreover, we show the existence of intramolecular H-H bonds in highly branched alkanes playing a secondary role in their increased stabilities in comparison with linear or less branched isomers. These results were accomplished by different approaches: density functional theory (DFT), ab initio, quantum theory of atoms in molecules (QTAIM), and electron localization function (ELF).
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Affiliation(s)
- Norberto K V Monteiro
- Institute of Chemistry, Federal University of Rio Grande do Norte , Natal, Rio Grande do Norte, Brazil , CEP 59078-970
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34
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Hazari A, Das LK, Bauzá A, Frontera A, Ghosh A. The influence of H-bonding on the ‘ambidentate’ coordination behaviour of the thiocyanate ion to Cd(ii): a combined experimental and theoretical study. Dalton Trans 2014; 43:8007-15. [DOI: 10.1039/c3dt53318b] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The importance of H-bonding in stabilizing the unusual S-coordination of the thiocyanate ion to Cd(ii) in hetero-metallic Cu2Cd compounds has been established by structural analyses and DFT studies.
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Affiliation(s)
- Alokesh Hazari
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009, India
| | - Lakshmi Kanta Das
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009, India
| | - Antonio Bauzá
- Department of Chemistry
- Universitat de les Illes Balears
- 07122 Palma de Mallorca, Spain
| | - Antonio Frontera
- Department of Chemistry
- Universitat de les Illes Balears
- 07122 Palma de Mallorca, Spain
| | - Ashutosh Ghosh
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009, India
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35
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Hassan A, Dinadayalane TC, Grabowski SJ, Leszczynski J. Structural, energetic, spectroscopic and QTAIM analyses of cation–π interactions involving mono- and bi-cyclic ring fused benzene systems. Phys Chem Chem Phys 2013; 15:20839-56. [PMID: 24196371 DOI: 10.1039/c3cp53927j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Ayorinde Hassan
- Interdisciplinary Center for Nanotoxicity, Department of Chemistry and Biochemistry, Jackson State University, 1400 J.R. Lynch Street, P.O. Box 17910, Jackson, MS 39217, USA.
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36
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Mitra M, Manna P, Seth SK, Das A, Meredith J, Helliwell M, Bauzá A, Choudhury SR, Frontera A, Mukhopadhyay S. Salt-bridge–π (sb–π) interactions at work: associative interactions of sb–π, π–π and anion–π in Cu(ii)-malonate–2-aminopyridine–hexafluoridophosphate ternary system. CrystEngComm 2013. [DOI: 10.1039/c2ce26790j] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Das LK, Kadam RM, Bauzá A, Frontera A, Ghosh A. Differences in Nuclearity, Molecular Shapes, and Coordination Modes of Azide in the Complexes of Cd(II) and Hg(II) with a “Metalloligand” [CuL] (H2L = N,N′-Bis(salicylidene)-1,3-propanediamine): Characterization in Solid and in Solutions, and Theoretical Calculations. Inorg Chem 2012; 51:12407-18. [DOI: 10.1021/ic301773h] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lakshmi Kanta Das
- Department
of Chemistry, University
College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata-700 009, India
| | - Ramakant M. Kadam
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085,
India
| | - Antonio Bauzá
- Department of Chemistry, Universitat de les Illes Balears, Crta de Valldemossa
km 7.5, 07122 Palma de Mallorca, Baleares, Spain
| | - Antonio Frontera
- Department of Chemistry, Universitat de les Illes Balears, Crta de Valldemossa
km 7.5, 07122 Palma de Mallorca, Baleares, Spain
| | - Ashutosh Ghosh
- Department
of Chemistry, University
College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata-700 009, India
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38
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A cross-metathesis approach to the synthesis of new etretinate type retinoids, ethyl retinoate and its 9Z-isomer. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.07.122] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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39
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Cañellas P, Torres M, Bauzá A, Cánaves MM, Sánchez K, Cabra MI, García‐Raso A, Fiol JJ, Deyà PM, Molins E, Mata I, Frontera A. Complexes of Zinc(II) with
N
‐Imidazolyl‐ and
N
‐Pyrazolylpyrimidine Donor Ligands: Synthesis, Crystal Structures, and Theoretical Study. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200379] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Pablo Cañellas
- Department of Chemistry, Universitat de les Illes Balears, Crta. Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain, Fax: +34‐971‐173426, http://www.uib.es/depart/dqu/supramolecular/index.html
| | - Marta Torres
- Department of Chemistry, Universitat de les Illes Balears, Crta. Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain, Fax: +34‐971‐173426, http://www.uib.es/depart/dqu/supramolecular/index.html
| | - Antonio Bauzá
- Department of Chemistry, Universitat de les Illes Balears, Crta. Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain, Fax: +34‐971‐173426, http://www.uib.es/depart/dqu/supramolecular/index.html
| | - María M. Cánaves
- Department of Chemistry, Universitat de les Illes Balears, Crta. Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain, Fax: +34‐971‐173426, http://www.uib.es/depart/dqu/supramolecular/index.html
| | - Kika Sánchez
- Department of Chemistry, Universitat de les Illes Balears, Crta. Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain, Fax: +34‐971‐173426, http://www.uib.es/depart/dqu/supramolecular/index.html
| | - María I. Cabra
- Department of Chemistry, Universitat de les Illes Balears, Crta. Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain, Fax: +34‐971‐173426, http://www.uib.es/depart/dqu/supramolecular/index.html
| | - Angel García‐Raso
- Department of Chemistry, Universitat de les Illes Balears, Crta. Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain, Fax: +34‐971‐173426, http://www.uib.es/depart/dqu/supramolecular/index.html
| | - Juan J. Fiol
- Department of Chemistry, Universitat de les Illes Balears, Crta. Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain, Fax: +34‐971‐173426, http://www.uib.es/depart/dqu/supramolecular/index.html
| | - Pere M. Deyà
- Department of Chemistry, Universitat de les Illes Balears, Crta. Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain, Fax: +34‐971‐173426, http://www.uib.es/depart/dqu/supramolecular/index.html
| | - Elies Molins
- Institut de Ciència de Materials de Barcelona (ICMAB‐CSIC), Campus de la Universitat Autònoma, 0183 Cerdanyola del Vallés, Barcelona, Spain
| | - Ignasi Mata
- Institut de Ciència de Materials de Barcelona (ICMAB‐CSIC), Campus de la Universitat Autònoma, 0183 Cerdanyola del Vallés, Barcelona, Spain
| | - Antonio Frontera
- Department of Chemistry, Universitat de les Illes Balears, Crta. Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain, Fax: +34‐971‐173426, http://www.uib.es/depart/dqu/supramolecular/index.html
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40
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Synthesis, X-ray characterization and computational Studies of N-imidazolyl and N-pyrazolyl pyrimidine derivatives. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.01.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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41
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Manna P, Seth SK, Das A, Hemming J, Prendergast R, Helliwell M, Choudhury SR, Frontera A, Mukhopadhyay S. Anion induced formation of supramolecular associations involving lone pair-π and anion-π interactions in Co(II) malonate complexes: experimental observations, Hirshfeld surface analyses and DFT studies. Inorg Chem 2012; 51:3557-71. [PMID: 22356090 DOI: 10.1021/ic202317f] [Citation(s) in RCA: 183] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Three Co(II)-malonate complexes, namely, (C(5)H(7)N(2))(4)[Co(C(3)H(2)O(4))(2)(H(2)O)(2)](NO(3))(2) (1), (C(5)H(7)N(2))(4)[Co(C(3)H(2)O(4))(2)(H(2)O)(2)](ClO(4))(2) (2), and (C(5)H(7)N(2))(4)[Co(C(3)H(2)O(4))(2)(H(2)O)(2)](PF(6))(2) (3) [C(5)H(7)N(2) = protonated 2-aminopyridine, C(3)H(4)O(4) = malonic acid, NO(3)(-) = nitrate, ClO(4)(-) = perchlorate, PF(6)(-) = hexafluorophosphate], have been synthesized from purely aqueous media, and their crystal structures have been determined by single crystal X-ray diffraction. A thorough analysis of Hirshfeld surfaces and fingerprint plots facilitates a comparison of intermolecular interactions in 1-3, which are crucial in building supramolecular architectures. When these complexes are structurally compared with their previously reported analogous Ni(II) or Mg(II) compounds, a very interesting feature regarding the role of counteranions has emerged. This phenomenon can be best described as anion-induced formation of extended supramolecular networks of the type lone pair-π/π-π/π-anion-π/π-lone pair and lone pair-π/π-π/π-anion involving various weak forces like lone pair-π, π-π, and anion-π interactions. The strength of these π contacts has been estimated using DFT calculations (M06/6-31+G*), and the formation energy of the supramolecular networks has been also evaluated. The influence of the anion (NO(3)(-), ClO(4)(-), and PF(6)(-)) on the total interaction energy of the assembly is also studied.
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Affiliation(s)
- Prankrishna Manna
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
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42
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Cañellas P, Bauzá A, García-Raso A, Fiol JJ, Deyà PM, Molins E, Mata I, Frontera A. Synthesis, X-ray characterization and computational studies of Cu(ii) complexes of N-pyrazolyl pyrimidine. Dalton Trans 2012; 41:11161-9. [DOI: 10.1039/c2dt31162c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Bankiewicz B, Matczak P, Palusiak M. Electron Density Characteristics in Bond Critical Point (QTAIM) versus Interaction Energy Components (SAPT): The Case of Charge-Assisted Hydrogen Bonding. J Phys Chem A 2011; 116:452-9. [DOI: 10.1021/jp210940b] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Barbara Bankiewicz
- Department of Theoretical Chemistry, University of Białystok, Hurtowa 1, 15-399, Białystok, Poland
| | - Piotr Matczak
- Department of Theoretical and Structural Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
| | - Marcin Palusiak
- Department of Theoretical and Structural Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
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44
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Cukrowski I, Govender KK, Mitoraj MP, Srebro M. QTAIM and ETS-NOCV Analyses of Intramolecular CH···HC Interactions in Metal Complexes. J Phys Chem A 2011; 115:12746-57. [DOI: 10.1021/jp203797y] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ignacy Cukrowski
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Lynnwood Road, Pretoria 0002, South Africa
| | - Krishna K. Govender
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Lynnwood Road, Pretoria 0002, South Africa
| | - Mariusz P. Mitoraj
- K. Gumiński Department of Theoretical Chemistry, Faculty of Chemistry, Jagiellonian University, R. Ingardena 3, 30-060 Cracow, Poland
| | - Monika Srebro
- K. Gumiński Department of Theoretical Chemistry, Faculty of Chemistry, Jagiellonian University, R. Ingardena 3, 30-060 Cracow, Poland
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45
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Bankiewicz B, Palusiak M. Does electron density in bond critical point reflect the formal charge distribution in H-bridges? The case of charge-assisted hydrogen bonds (CAHBs). COMPUT THEOR CHEM 2011. [DOI: 10.1016/j.comptc.2011.02.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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46
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Dihydrogen contacts in alkanes are subtle but not faint. Nat Chem 2011; 3:323-30. [PMID: 21430693 DOI: 10.1038/nchem.1004] [Citation(s) in RCA: 189] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Accepted: 01/31/2011] [Indexed: 11/08/2022]
Abstract
Alkane molecules are held together in the crystal state by purportedly weak homonuclear R-H···H-R dihydrogen interactions. In an apparent contradiction, the high melting points and vaporization enthalpies of polyhedranes in condensed phases require quite strong intermolecular interactions. Two questions arise: 'How strong can a weak C-H···H-C bond be?' and 'How do the size and topology of the carbon skeleton affect these bonding interactions?' A systematic computational study of intermolecular interactions in dimers of n-alkanes and polyhedranes, such as tetrahedrane, cubane, octahedrane or dodecahedrane, showed that attractive C-H···H-C interactions are stronger than usually thought. We identified factors that account for the strength of these interactions, including the tertiary nature of the carbon atoms and their low pyramidality. An alkane with a bowl shape was designed in the search for stronger dihydrogen intermolecular bonding, and a dissociation energy as high as 12 kJ mol⁻¹ is predicted by our calculations.
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47
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Affiliation(s)
- Sławomir Janusz Grabowski
- Kimika Fakultatea, Euskal Herriko Unibertsitatea and Donostia International Physics Center (DIPC) P.K. 1072, 20080 Donostia, Euskadi, Spain
- IKERBASQUE, Basque Foundation for Science, 48011, Bilbao, Spain
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48
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Alvaro CES, Ayala AD, Nudelman NS. Hydrogen-bonded nucleophile effects in ANS: the reactions of 1-chloro and 1-fluoro-2,4-dinitrobenzene with 2-guanidinobenzimidazole, 1-(2-aminoethyl)piperidine andN-(3-aminopropyl)morpholine in aprotic solvents. J PHYS ORG CHEM 2011. [DOI: 10.1002/poc.1712] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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49
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Garcia-Raso A, Albertí FM, Fiol JJ, Lagos Y, Torres M, Molins E, Mata I, Estarellas C, Frontera A, Quiñonero D, Deyà PM. A Combined Experimental and Theoretical Study of Anion-π Interactions in N6- and N9-Decyladenine Salts. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000436] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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50
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Cukrowski I, Govender KK. A Density Functional Theory- and Atoms in Molecules-based Study of NiNTA and NiNTPA Complexes toward Physical Properties Controlling their Stability. A New Method of Computing a Formation Constant. Inorg Chem 2010; 49:6931-41. [DOI: 10.1021/ic100453v] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ignacy Cukrowski
- Department of Chemistry, Faculty of Natural Sciences, University of Pretoria, Lynnwood Road, Hillcrest, Pretoria 0002, South Africa
| | - Krishna K. Govender
- Department of Chemistry, Faculty of Natural Sciences, University of Pretoria, Lynnwood Road, Hillcrest, Pretoria 0002, South Africa
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