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Chipanina NN, Shainyan BA, Oznobikhina LP, Lazareva NF. The Rivalry between Intramolecular Tetrel Bonds and Intermolecular Hydrogen Bonds in (O-Si) Chelates of N-Silylmethylamides and -ureas. A Theoretical Study. Chemphyschem 2024:e202400410. [PMID: 39005005 DOI: 10.1002/cphc.202400410] [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: 04/10/2024] [Revised: 05/21/2024] [Indexed: 07/16/2024]
Abstract
The comparison of the results of theoretical calculations of (O-Si) chelates of N-silylmethylated amides and ureas with the axial chlorine or fluorine atom at silicon to the data of X-ray analysis of related compounds revealed the formation of covalent O-Si tetrel bonds (TB) or noncovalent O⋅⋅⋅Si tetrel bonds (NTB). The nature of the formed tetrel bond depends on the substituents at silicon and the polarity of the medium. The competition between the intramolecular TB and intermolecular hydrogen bonds (HB) with proton donors depends on the center of basicity involved in the formation of HB, which could be either oxygen or halogen. The hydrogen bonding can result in changing the nature of the tetrel bonds from covalent to noncovalent and vice versa by varying their lengths and energies. The O-Si bond energies estimated by QTAIM analysis of N-[(chlorodimethylsilyl)methyl]-N-methylacetamide and its H-complexes vary within the range of 7.2 and 12 kcal/mol in gas and solution, respectively, and correlate with the O-Si bond lengths.
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Affiliation(s)
- Nina N Chipanina
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Division of the Russian Academy of Sciences, 1 Favorsky Street, 664033, Irkutsk, Russian Federation
| | - Bagrat A Shainyan
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Division of the Russian Academy of Sciences, 1 Favorsky Street, 664033, Irkutsk, Russian Federation
| | - Larisa P Oznobikhina
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Division of the Russian Academy of Sciences, 1 Favorsky Street, 664033, Irkutsk, Russian Federation
| | - Nataliya F Lazareva
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Division of the Russian Academy of Sciences, 1 Favorsky Street, 664033, Irkutsk, Russian Federation
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Menchikov LG, Popov AV. Physiological Activity of Trace Element Germanium including Anticancer Properties. Biomedicines 2023; 11:1535. [PMID: 37371629 PMCID: PMC10295216 DOI: 10.3390/biomedicines11061535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/20/2023] [Accepted: 05/24/2023] [Indexed: 06/29/2023] Open
Abstract
Germanium is an essential microelement, and its deficiency can result in numerous diseases, particularly oncogenic conditions. Consequently, water-soluble germanium compounds, including inorganic and coordination compounds, have attracted significant attention due to their biological activity. The review analyzes the primary research from the last decade related to the anticancer activity of germanium compounds. Furthermore, the review clarifies their actual toxicity, identifies errors and misconceptions that have contributed to the discrediting of their biological activity, and briefly suggests a putative mechanism of germanium-mediated protection from oxidative stress. Finally, the review provides clarifications on the discovery history of water-soluble organic germanium compounds, which was distorted and suppressed for a long time.
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Affiliation(s)
- Leonid G. Menchikov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prosp. 47, 119991 Moscow, Russia;
| | - Anatoliy V. Popov
- Department of Radiology, University of Pennsylvania, 3620 Hamilton Walk, Anatomy Chemistry Building, Rm 317, Philadelphia, PA 19104, USA
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Kramarova EP, Negrebetskii VV, Volodin AD, Buikin PA, Lalov AV, Novikov RA, Aliev TM, Korlyukov AA, Vologzhanina AV. Synthesis, Crystal Structure, and Properties of Phenylsilicon(IV) Bis-catecholate Complexes. RUSS J COORD CHEM+ 2022. [DOI: 10.1134/s1070328422090019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Lazareva NF, Alekseev MA, Sterkhova IV. Structure of novel N-fluorosilylmethyl-N-isopropylureas. MENDELEEV COMMUNICATIONS 2022. [DOI: 10.1016/j.mencom.2022.09.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Buikin PA, Vologzhanina AV, Arkhipov DE, Korlyukov AA. Electronic structure of substituted catecholate complexes of hexacoordinated silicon: a quantum chemical study. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3511-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ryll C, Kraushaar K, Wagler J, Brendler E, Kroke E. Disilanes with Pentacoordinate Si Atoms by Carbon Dioxide Insertion into Aminodisilanes: Syntheses, Molecular Structures, and Dynamic Behavior. ACS OMEGA 2022; 7:9527-9536. [PMID: 35350308 PMCID: PMC8945131 DOI: 10.1021/acsomega.1c06868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
The insertion of carbon dioxide into the Si-N bonds of aminodisilanes ((RR'N) n Me3-n Si)2 affords carbamoyloxydisilanes ((RR'NC(O)O) n Me3-n Si)2. Some of the obtained insertion products feature pentacoordinate silicon atoms in the solid state and in solution, with two carbamoyloxy moieties bridging the Si-Si bond. The aminodisilanes and their insertion products were extensively analyzed, including single-crystal X-ray structure analyses. The temperature dependence of the higher coordination was investigated using variable temperature NMR experiments.
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Nikolin AA, Korlyukov AA, Kramarova EP, Romanenko AR, Arkhipov DE, Tarasenko DV, Bylikin SY, Baukov YI, Negrebetsky VV. Synthesis and structure of (O → Si)-chelate fluorosilane, a novel complex of pentacoordinate silicon with N-acetylvaline. MENDELEEV COMMUNICATIONS 2022. [DOI: 10.1016/j.mencom.2022.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Isomer-selective dative bond O→M (M = Si, Ge) for designing new photochromic hemi-indigo systems. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122189] [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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Valinate and SiMe2 – An interesting couple in pentacoordinate Si-complexes: Templated generation of the dipeptide val-val and formation of an organosilicon-ammonia-adduct. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Belogolova EF, Shlykov SA, Eroshin AV, Doronina EP, Sidorkin VF. The hierarchy of ab initio and DFT methods for describing an intramolecular non-covalent SiN contact in the silicon compounds using electron diffraction geometries. Phys Chem Chem Phys 2021; 23:2762-2774. [PMID: 33496285 DOI: 10.1039/d0cp05872f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the series of silatranes XSi(OCH2CH2)3N, 1 (X = Me, 1a; H, 1b; F, 1c) with the known gas electron diffraction (GED) structures, the problematic geometry of 1-methylsilatrane 1a has been revised. In particular, the new value of the SiN distance (dSiN) in 1a turned out to be ∼0.06 Å longer than the generally accepted one. This dSiN resolves the long-standing contradiction between the data of the structural and spectral experiments regarding the sensitivity of 1 to the medium effect. We also performed the ab initio and DFT study of the combined series of silatranes 1a-c, silylalkylamines H3Si(CH2)3NMe2 (2a) and F3SiCH2NMe2 (2b), silylhydrazines F3SiN(Me)NMe2 (2c) and F3SiN(SiMe3)NMe2 (2d), and silyloxyamines ClH2SiONMe2 (2e,f), (F3C)F2SiONMe2 (2g,h) and F3SiONMe2 (2i), in which the GED dSiN values are in a wide range of 2-3 Å. None of the involved quantum chemical methods has succeeded in reproducing all the experimental gas-phase dSiN values in 1a-c, 2a-i with an acceptable accuracy (0.01-0.03 Å). The problems of the used methods, primarily CCSD with the Pople basis sets, are caused by four molecules with the geminal SiNN and SiON fragments (2d,f-i) and dSiN < 2.3 Å. A reasonable hierarchy of computationally accessible theory levels for studying the physicochemical manifestation of the non-covalent intramolecular SiN interactions can be constructed only at dSiN > 2.3 Å: MP2 < PBE0 ∼ B3PW91 ∼ SCS-MP2 < CCSD < CCSD(T).
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Affiliation(s)
- Elena F Belogolova
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Street, 664033 Irkutsk, Russian Federation.
| | - Sergey A Shlykov
- Ivanovo State University of Chemistry and Technology, Sheremetievskiy ave. 7, 153000 Ivanovo, Russian Federation.
| | - Alexey V Eroshin
- Ivanovo State University of Chemistry and Technology, Sheremetievskiy ave. 7, 153000 Ivanovo, Russian Federation.
| | - Evgeniya P Doronina
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Street, 664033 Irkutsk, Russian Federation.
| | - Valery F Sidorkin
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Street, 664033 Irkutsk, Russian Federation.
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Trofimova O, Grebneva E, Bolgova Y, Belogolova E, Emel’yanov A, Albanov A, Borodina T, Ivanova A, Korzhova S, Pozdnyakov A. The synthesis, characterization, and theoretical analysis of novel Si-substituted silylethyl derivatives of 2-mercaptobenzoxazole and 2-mercaptobenzothiazole. NEW J CHEM 2021. [DOI: 10.1039/d1nj00793a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Trifluorosilylethyl derivatives of 2-mercaptobenzoxazole and 2-mercaptobenzothiazole C6H4NYCS(CH2)2SiF3 (Y = O, S) have been synthesized in order to study the intramolecular N → Si interaction in compounds with the SiCCSCN fragment.
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Affiliation(s)
- Olga Trofimova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Ekaterina Grebneva
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Yuliya Bolgova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Elena Belogolova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Artem Emel’yanov
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Alexander Albanov
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Tat’yana Borodina
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Anastasiya Ivanova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Svetlana Korzhova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Alexander Pozdnyakov
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
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Chachkov D, Ismagilova R, Vereshchagina Y. Mechanism of Reactions of 1-Substituted Silatranes and Germatranes, 2,2-Disubstituted Silocanes and Germocanes, 1,1,1-Trisubstituted Hyposilatranes and Hypogermatranes with Alcohols (Methanol, Ethanol): DFT Study. Molecules 2020; 25:molecules25122803. [PMID: 32560499 PMCID: PMC7356647 DOI: 10.3390/molecules25122803] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/11/2020] [Accepted: 06/15/2020] [Indexed: 11/21/2022] Open
Abstract
The mechanism of reactions of silatranes and germatranes, and their bicyclic and monocyclic analogues with one molecule of methanol or ethanol, was studied at the Density Functional Theory (DFT) B3PW91/6-311++G(df,p) level of theory. Reactions of 1-substituted sil(germ)atranes, 2,2-disubstituted sil(germ)ocanes, and 1,1,1-trisubstituted hyposil(germ)atranes with alcohol (methanol, ethanol) proceed in one step through four-center transition states followed by the opening of a silicon or germanium skeleton and the formation of products. According to quantum chemical calculations, the activation energies and Gibbs energies of activation of reactions with methanol and ethanol are close, their values decrease in the series of atranes–ocanes–hypoatranes for interactions with both methanol and ethanol. The reactions of germanium-containing derivatives are characterized by lower activation energies in comparison with the reactions of corresponding silicon-containing compounds. The annular configurations of the product molecules with electronegative substituents are stabilized by the transannular N→X (X = Si, Ge) bond and different intramolecular hydrogen contacts with the participation of heteroatoms of substituents at the silicon or germanium.
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Affiliation(s)
- Denis Chachkov
- Kazan Department of Joint Supercomputer Center of Russian Academy of Sciences–Branch of Federal State Institution “Scientific Research Institute for System Analysis of the RAS”, Lobachevskogo 2/31, 420111 Kazan, Russia;
| | - Rezeda Ismagilova
- Department of Physical Chemistry, A.M. Butlerov Institute of Chemistry, Kazan Federal University, Kremlevskaya 18, 420008 Kazan, Russia;
| | - Yana Vereshchagina
- Department of Physical Chemistry, A.M. Butlerov Institute of Chemistry, Kazan Federal University, Kremlevskaya 18, 420008 Kazan, Russia;
- Correspondence: or
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Sidorkin VF, Belogolova EF, Doronina EP, Liu G, Ciborowski SM, Bowen KH. “Outlaw” Dipole-Bound Anions of Intra-Molecular Complexes. J Am Chem Soc 2020; 142:2001-2011. [DOI: 10.1021/jacs.9b11694] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Valery F. Sidorkin
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences Favorsky, 1, Irkutsk 664033, Russian Federation
| | - Elena F. Belogolova
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences Favorsky, 1, Irkutsk 664033, Russian Federation
| | - Evgeniya P. Doronina
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences Favorsky, 1, Irkutsk 664033, Russian Federation
| | - Gaoxiang Liu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Sandra M. Ciborowski
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Kit H. Bowen
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
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Feshin VP, Feshina EV. Structure of the SiCl4←O=C[N(CH3)2]2 Complex and Electron Density Redistribution upon Its Formation according to ab initio Calculations. RUSS J INORG CHEM+ 2019. [DOI: 10.1134/s0036023619090110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Korlyukov AA, Arkhipov DE, Volodin AD, Negrebetskii VV, Nikolin AA, Kramarova EP, Shipov AG, Baukov YI. Mono-C,O-chelated bromo- and triflatosilanes with an amino acid moiety: salts or covalently bonded complexes? Russ Chem Bull 2019. [DOI: 10.1007/s11172-019-2429-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Matczak P. N → Sn coordination in the complexes of tin halides with pyridine: A comparison between Sn(II) and Sn(IV). Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4811] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Piotr Matczak
- Department of Physical Chemistry, Faculty of Chemistry; University of Łódź; Pomorska 163/165 90-236 Lodz Poland
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Vereshchagina YA, Ismagilova RR, Chachkov DV. Mechanism of Hydrolysis of 1,1,1-Trisubstituted Hyposilatranes and Hypogermatranes. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2019. [DOI: 10.1134/s1070428019020143] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Nikolin AA, Korlyukov AA, Kramarova EP, Arkhipov DE, Shipov AG, Baukov YI, Negrebetsky VV. Synthesis and structural features of new pentacoordinated monofluorosilanes containing C,O-chelate ligands based on 2-amino acid N-methylamides. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2215-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Konovalov AI, Antipin IS, Burilov VA, Madzhidov TI, Kurbangalieva AR, Nemtarev AV, Solovieva SE, Stoikov II, Mamedov VA, Zakharova LY, Gavrilova EL, Sinyashin OG, Balova IA, Vasilyev AV, Zenkevich IG, Krasavin MY, Kuznetsov MA, Molchanov AP, Novikov MS, Nikolaev VA, Rodina LL, Khlebnikov AF, Beletskaya IP, Vatsadze SZ, Gromov SP, Zyk NV, Lebedev AT, Lemenovskii DA, Petrosyan VS, Nenaidenko VG, Negrebetskii VV, Baukov YI, Shmigol’ TA, Korlyukov AA, Tikhomirov AS, Shchekotikhin AE, Traven’ VF, Voskresenskii LG, Zubkov FI, Golubchikov OA, Semeikin AS, Berezin DB, Stuzhin PA, Filimonov VD, Krasnokutskaya EA, Fedorov AY, Nyuchev AV, Orlov VY, Begunov RS, Rusakov AI, Kolobov AV, Kofanov ER, Fedotova OV, Egorova AY, Charushin VN, Chupakhin ON, Klimochkin YN, Osyanin VA, Reznikov AN, Fisyuk AS, Sagitullina GP, Aksenov AV, Aksenov NA, Grachev MK, Maslennikova VI, Koroteev MP, Brel’ AK, Lisina SV, Medvedeva SM, Shikhaliev KS, Suboch GA, Tovbis MS, Mironovich LM, Ivanov SM, Kurbatov SV, Kletskii ME, Burov ON, Kobrakov KI, Kuznetsov DN. Modern Trends of Organic Chemistry in Russian Universities. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2018. [DOI: 10.1134/s107042801802001x] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Doronina EP, Sidorkin VF, Belogolova EF, Jouikov V. Hypervalent benzophenones. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.01.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Vereshchagina YA, Chachkov DV, Ismagilova RR, Vedeneeva EA. Mechanism of Hydrolysis of 2,2-Disubstituted Silocanes and Germocanes and 1-Substituted Silatranes and Germatranes. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2018. [DOI: 10.1134/s1070428018030181] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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23
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Belogolova EF, Doronina EP, Sidorkin VF. Assignment of photoelectron spectra of intramolecular silicon complexes: 1-vinyl- and 1-phenylsilatranes. Phys Chem Chem Phys 2018; 20:26210-26220. [DOI: 10.1039/c8cp04582h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The problematic photoelectron spectra of 1-vinyl- and 1-phenylsilatranes were theoretically studied and the correlation between the VIE and thedSiNwas proposed to be used for the identification of orbitals in the Si←N coordination bond in XSi[OCH2CH2]3N.
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Affiliation(s)
- Elena F. Belogolova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences Favorsky
- Irkutsk 664033
- Russian Federation
| | - Evgeniya P. Doronina
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences Favorsky
- Irkutsk 664033
- Russian Federation
| | - Valery F. Sidorkin
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences Favorsky
- Irkutsk 664033
- Russian Federation
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Donor-stabilized germylium cations. To the scheme of formation of bis(chelate) germylium ions using the complexes with lactamomethyl (С,О)-chelate ligand (enantolactam derivatives) as an example. Russ Chem Bull 2017. [DOI: 10.1007/s11172-016-1622-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Sidorkin VF, Belogolova EF, Wang Y, Jouikov V, Doronina EP. Electrochemical Oxidation and Radical Cations of Structurally Non-rigid Hypervalent Silatranes: Theoretical and Experimental Studies. Chemistry 2017; 23:1910-1919. [PMID: 27906483 DOI: 10.1002/chem.201604663] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Indexed: 11/06/2022]
Abstract
Using 18 silatranes XSi(OCH2 CH2 )3 N (1) as examples, the potentials of electrochemical oxidation E0 of the hypervalent compounds of Si were calculated for the first time at the ab initio and DFT levels. The experimental peak potentials Ep (acetonitrile) show an excellent agreement (MAE=0.03) with the MP2//B3PW91 calculated E0 (C-PCM). Radical cations of 1 reveal a stretch isomerism of the N→Si dative bond. Localization of the spin density (SD) on the substituent X and the short (s) coordination contact Si⋅⋅⋅N (dSiN <2.13 Å) along with the high five-coordinate character of Si are typical for the first isomer 1+.(s) , whereas the second one, 1+.(l) , has a longer (l) Si⋅⋅⋅N distance (dSiN >3.0 Å), the four-coordinate Si and the SD localized on the silatrane nitrogen atom Ns . The vertical model of adiabatic ionization (1→1+.(s) or 1→1+.(l) ) was developed. It allows, in accordance with an original experimental test (electrooxidation of 1 in the presence of ferrocene), a reliable prediction of the most probable pathways of the silatrane oxidation. The reliable relationships of E0 (1) with the strength characteristics of the dative contact N→Si were revealed.
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Affiliation(s)
- Valery F Sidorkin
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky, 1, Irkutsk, 664033, Russian Federation
| | - Elena F Belogolova
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky, 1, Irkutsk, 664033, Russian Federation
| | - Yu Wang
- University of Rennes I, Molecular Chemistry and Photonics, UMR 6226 ISCR, 35042, Rennes, France
| | - Viatcheslav Jouikov
- University of Rennes I, Molecular Chemistry and Photonics, UMR 6226 ISCR, 35042, Rennes, France
| | - Evgeniya P Doronina
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky, 1, Irkutsk, 664033, Russian Federation
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Hoeksema C, Adler MJ, Gilbert TM. Computational Study of Ways by Which exo-Silatranes Might Be Prepared. J Phys Chem A 2016; 120:9315-9323. [PMID: 27805402 DOI: 10.1021/acs.jpca.6b09346] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
exo-Silatranes involve cage structures where the nitrogen lone pair points away from the cage rather than into it. This distinguishes them from the well-established endo-silatranes. exo-Silatranes have not been observed experimentally, consistent with a significant benefit to silicon-nitrogen interactions inside the cages as suggested for endo-silatranes. Identifying examples of exo-silatranes would prove useful in understanding Si-N interactions, as they would represent the "no interaction" extreme of the spectrum. We have found four means by which exo-silatranes might be synthesized: (1) employing smaller cages; (2) employing constrained rings to stiffen the cage backbones; (3) employing steric interactions to enhance preference for the less crowded exo-geometry around nitrogen; (4) modifying the Lewis acidity and basicity of the silicon and nitrogen so significantly as to remove their desire to interact. The preference for exo geometries is established using the parameter Δ, representing the distance between the nitrogen atom and the least-squares plane containing the adjacent carbon atoms. In some cases, Δ values for exo-silatranes are greater than 0.3 Å. In others, they are near zero, indicating a nearly planar nitrogen atom. There are no obvious structural markers besides Δ that distinguish between exo- and endo-silatranes.
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Affiliation(s)
- Carolynn Hoeksema
- Department of Chemistry & Biochemistry, Northern Illinois University , DeKalb, Illinois 60115, United States
| | - Marc J Adler
- Department of Chemistry & Biochemistry, Northern Illinois University , DeKalb, Illinois 60115, United States
| | - Thomas M Gilbert
- Department of Chemistry & Biochemistry, Northern Illinois University , DeKalb, Illinois 60115, United States
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Varjosaari SE, Skrypai V, Suating P, Hurley JJM, Gilbert TM, Adler MJ. 1-Hydrosilatrane: A Locomotive for Efficient Ketone Reductions. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601256] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Sami E. Varjosaari
- Department of Chemistry & Biochemistry; Northern Illinois University; 1425 W. Lincoln Hwy 60115-2828 DeKalb IL USA
| | - Vladislav Skrypai
- Department of Chemistry & Biochemistry; Northern Illinois University; 1425 W. Lincoln Hwy 60115-2828 DeKalb IL USA
| | - Paolo Suating
- Department of Chemistry & Biochemistry; Northern Illinois University; 1425 W. Lincoln Hwy 60115-2828 DeKalb IL USA
| | - Joseph J. M. Hurley
- Department of Chemistry & Biochemistry; Northern Illinois University; 1425 W. Lincoln Hwy 60115-2828 DeKalb IL USA
| | - Thomas M. Gilbert
- Department of Chemistry & Biochemistry; Northern Illinois University; 1425 W. Lincoln Hwy 60115-2828 DeKalb IL USA
| | - Marc J. Adler
- Department of Chemistry & Biochemistry; Northern Illinois University; 1425 W. Lincoln Hwy 60115-2828 DeKalb IL USA
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Portius P, Davis M. Synthesis of six-coordinate mono-, bis-, and tris(tetrazolato) complexes via [3 + 2] cycloadditions of nitriles to silicon-bound azido ligands. Dalton Trans 2016; 45:17141-17152. [PMID: 27735013 DOI: 10.1039/c6dt02867e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient synthetic route to poly(tetrazolato) silicon complexes is described based on the four reactive centres of the N-rich, highly endothermic tetraazides of the type Si(N3)4(L2). Hypercoordinate azido(tetrazolato) silicon complexes Si(N3)2(N4C-R)2(L2), R = CH3, C6H5, 4-C6H4CH3 (4a, 5, 6, 7) and Si(N3)2(N4C-L)2 (9, L = 2-C5H4N), L2 = 2,2'-bipyridine, 1,10-phenanthroline, with SiN6 skeletons were synthesised via multiple [3 + 2] dipolar cycloaddition reactions starting from Si(N3)4(L2) and a nitrile. The isolated new complexes were characterised by standard analytical methods, single crystal X-ray diffraction and differential scanning calorimetry (4a,b). Tetrazolato ligand linkage isomerism was observed for complex 4a. The crystallographically characterised methyl tetrazolato complexes and plausible configurational and linkage isomers were evaluated by DFT calculations at the B3LYP/6-311G(d,p) level.
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Affiliation(s)
- Peter Portius
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, United Kingdom.
| | - Martin Davis
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, United Kingdom.
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Hexacoordinate Silicon Compounds with a Dianionic Tetradentate (N,N′,N′,N)-Chelating Ligand. INORGANICS 2016. [DOI: 10.3390/inorganics4020008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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30
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Coordination compounds of CuCl2 with 1-(N-heterylmethyl)silatranes. Russ Chem Bull 2016. [DOI: 10.1007/s11172-016-1410-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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31
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Matveeva AG, Vologzhanina AV, Goryunov EI, Aysin RR, Pasechnik MP, Matveev SV, Godovikov IA, Safiulina AM, Brel VK. Extraction and coordination studies of a carbonyl–phosphine oxide scorpionate ligand with uranyl and lanthanide(iii) nitrates: structural, spectroscopic and DFT characterization of the complexes. Dalton Trans 2016; 45:5162-79. [DOI: 10.1039/c5dt04963f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A scorpionate organophosphorus ligand exhibits promising extraction properties and variable denticity in f-block element complexes in the solid state and solution.
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Affiliation(s)
- Anna G. Matveeva
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow 119991
- Russia
| | - Anna V. Vologzhanina
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow 119991
- Russia
| | - Evgenii I. Goryunov
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow 119991
- Russia
| | - Rinat R. Aysin
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow 119991
- Russia
| | - Margarita P. Pasechnik
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow 119991
- Russia
| | - Sergey V. Matveev
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow 119991
- Russia
| | - Ivan A. Godovikov
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow 119991
- Russia
| | | | - Valery K. Brel
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow 119991
- Russia
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32
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Sidorkin VF, Belogolova EF, Doronina EP. Assignment of photoelectron spectra of silatranes: first ionization energies and the nature of the dative Si←N contact. Phys Chem Chem Phys 2015; 17:26225-37. [DOI: 10.1039/c5cp04341g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The problematic experimental (8–12 eV) photoelectron spectra of silatranes were theoretically studied and the correlation was found between the first vertical ionization energies, VIEs1, and the various characteristics of the coordination Si←N contact.
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Affiliation(s)
- Valery F. Sidorkin
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences Favorsky
- Irkutsk 664033
- Russian Federation
| | - Elena F. Belogolova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences Favorsky
- Irkutsk 664033
- Russian Federation
| | - Evgeniya P. Doronina
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences Favorsky
- Irkutsk 664033
- Russian Federation
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