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Abstract
The properties of the bond between a N-ligand and a Lewis acid containing a σ-hole are studied by quantum chemical methods. Interactions considered include pnicogen bonds involving SbX5, PX5, and PX3, where X represents any of the halogen atoms F, Cl, Br, or I. Also studied are the tetrel bonds of PbX4 and SiX4, as well as the chalcogen bond involving TeOX4. Both NH3 and NCH are applied as two possible bases of differing potency. Some of the bonds are very strong with interaction energies easily exceeding 25 kcal/mol and with AIM bond critical point densities much higher than 0.04 au, suggesting their classification as coordinate covalent bonds. The pentavalent SbX5 and PX5 fall into this category when combined with NH3, as does TeOX4. Although the tetrel bonds involving PbX4 are only slightly weaker, they are probably better viewed as a strong noncovalent bond on the cusp of covalency. Changing the internal bonding of hypervalent SbX5 to the more conventional SbX3 weakens the interaction to a classical noncovalent pnicogen bond. Reducing the base nucleophilicity from NH3 to NCH weakens the bonds so that they are clearly noncovalent.
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Affiliation(s)
- Steve Scheiner
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300, United States
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2
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Li DJ, Tang SL, Ma FJ, Zhang LL, Cheng YZ, Zhang LP. Synthesis, crystal structure, and properties of three lead(II) complexes based on the 1,10-phenanthroline ligand. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2022. [DOI: 10.1515/znb-2022-0035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Three new lead(II) complexes containing the 1,10-phenanthroline ligand, [Pb(phen)2(3,5-DNB)2] (1), [Pb(phen)2(3,5-DNB)(NO3)]2·H2O (2), and [Pb(phen)(HCOO)(NO3)(H2O)]
n
(3) (phen = 1,10-phenanthroline, 3,5-DNB = 3,5-dinitrobenzoate anion) have been synthesized and characterized by elemental analyses, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analyses (TGA), and single-crystal X-ray diffraction. The complexes 1 and 2 are monomeric species, whereas complex 3 is a one-dimensional polymer. In the three complexes, the ligand phen creates a number of π···π stacking interactions and hydrogen bonds, which play an important role in extending complexes 1–3 to supramolecular architectures. The Pb(II) ion of complexes 1 and 2 shows hemidirected geometry with noncovalent Pb···O/C tetrel bonds formed which further stabilize the supramolecular structures.
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Affiliation(s)
- De-Jun Li
- School of Pharmacy, Weifang Medical University , Weifang 261053 , P. R. China
| | - Shi-Li Tang
- School of Pharmacy, Weifang Medical University , Weifang 261053 , P. R. China
| | - Feng-Jie Ma
- School of Pharmacy, Weifang Medical University , Weifang 261053 , P. R. China
| | - Lu-Lin Zhang
- School of Pharmacy, Weifang Medical University , Weifang 261053 , P. R. China
| | - Yuan-Zheng Cheng
- School of Pharmacy, Weifang Medical University , Weifang 261053 , P. R. China
| | - Li-Ping Zhang
- School of Pharmacy, Weifang Medical University , Weifang 261053 , P. R. China
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García-Santos I, Castiñeiras A, Mahmoudi G, Babashkina MG, Zangrando E, Gomila RM, Frontera A, Safin DA. Supramolecular aggregation of lead(II) perchlorate and a thiosemicarbazide derivative linked by a myriad of non-covalent interactions. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120974] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Mahmoudi G, García-Santos I, Pittelkow M, Kamounah FS, Zangrando E, Babashkina MG, Frontera A, Safin DA. The tetrel bonding role in supramolecular aggregation of lead(II) acetate and a thiosemicarbazide derivative. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2022; 78:685-694. [PMID: 35975834 DOI: 10.1107/s2052520622005789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 05/29/2022] [Indexed: 06/15/2023]
Abstract
A new PbII coordination complex [PbL(OAc)], which was readily synthesized from a mixture of Pb(OAc)2·3H2O and 1-(pyridin-2-yl)benzylidene-4-phenylthiosemicarbazide (HL) is reported. The crystal structure analysis of [PbL(OAc)] showed that the PbII cation is N,N',S-chelated by the tridentate pincer-type ligand L and by the oxygen atoms of the acetate anion. In addition, the metal centre forms Pb...O and Pb...S tetrel bonds with an adjacent complex molecule, yielding a 1D zigzag polymeric chain, which is reinforced by N-H...O hydrogen bonds and π...π interactions. These chains are interlinked by C-H...py non-covalent interactions, realized between one of the acetate hydrogen atoms and the pyridine rings. According to the Hirshfeld surface analysis, the crystal packing is mainly characterized by intermolecular H...H, H...C and H...O contacts, followed by H...N, H...S, C...C, C...N, Pb...H, Pb...O and Pb...S contacts. The FTIR and 1H NMR spectra of [PbL(OAc)] testify to the deprotonation of the parent ligand HL, while the acetate ligand exhibits an anisobidentate coordination mode as established by means of single-crystal X-ray diffraction and FTIR spectroscopy. Lastly, theoretical calculations at the PBE0-D3/def2-TZVP level of theory have been used to analyze and characterize the Pb...O and Pb...S tetrel bonds observed in the crystal of [PbL(OAc)], using a combination of QTAIM (Quantum Theory of Atoms in Molecules) and NCIPlot (Non-Covalent Interaction Plot) computational tools.
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Affiliation(s)
- Ghodrat Mahmoudi
- Department of Chemistry, Faculty of Science, University of Maragheh, PO Box 55181-83111, Maragheh, Iran
| | - Isabel García-Santos
- Departamento de Química Inorgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Michael Pittelkow
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Fadhil S Kamounah
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Ennio Zangrando
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Maria G Babashkina
- Advanced Materials for Industry and Biomedicine Laboratory, Kurgan State University, Sovetskaya Str. 63/4, 640020 Kurgan, Russian Federation
| | - Antonio Frontera
- Departament de Química, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122 Palma de Mallorca, Spain
| | - Damir A Safin
- Advanced Materials for Industry and Biomedicine Laboratory, Kurgan State University, Sovetskaya Str. 63/4, 640020 Kurgan, Russian Federation
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Unravelling the Synthetic Mimic, Spectroscopic Insights, and Supramolecular Crystal Engineering of an Innovative Heteronuclear Pb(II)-Salen Cocrystal: An Integrated DFT, QTAIM/NCI Plot, NLO, Molecular Docking/PLIP, and Antibacterial Appraisal. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02448-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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García-Santos I, Castiñeiras A, Mahmoudi G, Babashkina MG, Zangrando E, Gomila RM, Frontera A, Safin DA. Lead(ii) supramolecular structures formed through a cooperative influence of the hydrazinecarbothioamide derived and ancillary ligands. CrystEngComm 2022. [DOI: 10.1039/d1ce01251g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on tetrel bonding and other noncovalent interactions in the lead(ii)-derived complexes with the hydrazinecarbothioamide derived and ancillary ligands, which predominantly drive the formation of extended architectures.
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Affiliation(s)
- Isabel García-Santos
- Departamento de Química Inorgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Alfonso Castiñeiras
- Departamento de Química Inorgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Ghodrat Mahmoudi
- Department of Chemistry, Faculty of Science, University of Maragheh, P.O. Box 55181-83111, Maragheh, Iran
| | - Maria G. Babashkina
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Ennio Zangrando
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Rosa M. Gomila
- Departament de Química, Universitat de les Illes Balears, Crta. de Valldemossa km. 7.5, 07122 Palma de Mallorca, Baleares, Spain
| | - Antonio Frontera
- Departament de Química, Universitat de les Illes Balears, Crta. de Valldemossa km. 7.5, 07122 Palma de Mallorca, Baleares, Spain
| | - Damir A. Safin
- University of Tyumen, Volodarskogo Str. 6, 625003 Tyumen, Russian Federation
- “Advanced Materials for Industry and Biomedicine” Laboratory, Kurgan State University, Sovetskaya Str. 63/4, 640020 Kurgan, Russian Federation
- Innovation Center for Chemical and Pharmaceutical Technologies, Ural Federal University named after the First President of Russia B. N. Eltsin, Mira Str. 19, Ekaterinburg, 620002, Russian Federation
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de Las Nieves-Piña M, Frontera A, Mooibroek TJ, Bauzá A. Frustrated Lewis Pairs Based on Carbon⋅⋅⋅Carbon + Tetrel Bonds: A DFT Study. Chemphyschem 2021; 22:2478-2483. [PMID: 34596315 DOI: 10.1002/cphc.202100613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/30/2021] [Indexed: 01/02/2023]
Abstract
The ability of Triangulenium (TA+ ) compounds to form Frustrated Lewis Pairs (FLPs) with N-HeteroCycle Carbenes (NHCs) is analysed in this manuscript at the PBE0-D3/def2-TZVP level of theory. We have used six TA+ -based moieties, three presenting similar bridging groups (O (trioxo), -CH2 (triaryl) and -NH (triaza)) and another three mixing, O, -CH2 and NH moieties. In addition, several aryl-substituted NHCs have been used as electron donor moieties to undergo carbon⋅⋅⋅carbon+ tetrel bonds with the TA+ derivatives. More precisely, -Me,-iPr, -tBu and -Ph groups were used. Finally, we have used Bader's quantum theory of "atoms in molecules" (QTAIM) and Natural Bonding Analysis (NBO) to characterize the carbon⋅⋅⋅carbon+ tetrel bonds described herein. We expect the results gathered herein will be useful for further exploitation of carbon⋅⋅⋅carbon+ bonds in the formation of FLPs as well as to expand the current knowledge of tetrel bonds to the fields of synthetic chemistry and catalysis.
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Affiliation(s)
- María de Las Nieves-Piña
- Department of Chemistry, Universitat de les Illes Balears, Crta. de Valldemossa km 7.7, 07122, Palma de Mallorca, Baleares, Spain
| | - Antonio Frontera
- Department of Chemistry, Universitat de les Illes Balears, Crta. de Valldemossa km 7.7, 07122, Palma de Mallorca, Baleares, Spain
| | - Tiddo J Mooibroek
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park A, 904, E1.26, 1098 XH, Amsterdam, The Netherlands
| | - Antonio Bauzá
- Department of Chemistry, Universitat de les Illes Balears, Crta. de Valldemossa km 7.7, 07122, Palma de Mallorca, Baleares, Spain
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Evaluation of the antitumor activity of a series of the pincer-type metallocomplexes produced from isonicotinohydrazide derivative. J Inorg Biochem 2021; 223:111525. [PMID: 34237626 DOI: 10.1016/j.jinorgbio.2021.111525] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/18/2021] [Accepted: 06/25/2021] [Indexed: 01/30/2023]
Abstract
In this work we report on the antitumor properties of a series of pincer-type metallocomplexes [Hg2(HL-keto)Cl4]n (1), [Hg(HL-keto)I2] (2) and [Mn(HL-zwitterion)Cl2]∙MeOH (3∙MeOH), derived from N'-(1-(pyridin-2-yl)ethylidene)isonicotinohydrazide (HL) and corresponding metal salts. The Hg(II) and Mn(II) salts are chelated by the keto (HL-keto) or zwitterionic (HL-zwitterion) form of HL, respectively. The cytotoxic effects of these compounds have been accessed against lung adenocarcinoma (A549) and hepatocellular carcinoma (HepG2 and Huh7) cell lines. Complexes 1 and 2 were found to be most efficient against the cell line Huh7 with IC50 value of 2.56 and 9.90 μM, respectively, while they exhibit moderate activity towards cell lines A549 and HepG2, as evidenced from IC50 values in the range 27.98-56.99 μM. Complex 3∙MeOH is less efficient towards all the three cell lines with relatively high IC50 values. The mechanisms of the metallocomplexes killing the aforementioned cells were elucidated by flow cytometry, colony formation and polymerase chain reaction (PCR) analysis of apoptosis related expression of the genes. The results of the cytotoxic effects and antitumor activity on different cell lines are affected by the metal nature and the presence of the coordinated halide.
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