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Shenderovich, Ilya G. ; Denisov, Gleb S.

NMR Properties of the Cyanide Anion, a Quasisymmetric Two-Faced Hydrogen Bonding Acceptor

Shenderovich, Ilya G. und Denisov, Gleb S. (2021) NMR Properties of the Cyanide Anion, a Quasisymmetric Two-Faced Hydrogen Bonding Acceptor. Symmetry 13 (7), S. 1298.

Veröffentlichungsdatum dieses Volltextes: 01 Sep 2021 10:18
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.47925


Zusammenfassung

The isotopically enriched cyanide anion, (C-13 equivalent to N-15)(-), has a great potential as the NMR probe of non-covalent interactions. However, hydrogen cyanide is highly toxic and can decompose explosively. It is therefore desirable to be able to theoretically estimate any valuable results of certain experiments in advance in order to carry out experimental studies only for the most ...

The isotopically enriched cyanide anion, (C-13 equivalent to N-15)(-), has a great potential as the NMR probe of non-covalent interactions. However, hydrogen cyanide is highly toxic and can decompose explosively. It is therefore desirable to be able to theoretically estimate any valuable results of certain experiments in advance in order to carry out experimental studies only for the most suitable molecular systems. We report the effect of hydrogen bonding on NMR properties of N-15 equivalent to(CH)-C-13 center dot center dot center dot X and C-13 equivalent to(NH)-N-15 center dot center dot center dot X hydrogen bonding complexes in solution, where X = F-19, N-15, and O=P-31, calculated at the omega B97XD/def2tzvp and the polarizable continuum model (PCM) approximations. In many cases, the isotropic C-13 and N-15 chemical shieldings of the cyanide anion are not the most informative NMR properties of such complexes. Instead, the anisotropy of these chemical shieldings and the values of scalar coupling constants, including those across hydrogen bonds, can be used to characterize the geometry of such complexes in solids and solutions. (1)J((NC)-N-15-C-13) strongly correlates with the length of the N equivalent to C bond.



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Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftSymmetry
Verlag:MDPI
Ort der Veröffentlichung:BASEL
Band:13
Nummer des Zeitschriftenheftes oder des Kapitels:7
Seitenbereich:S. 1298
Datum19 Juli 2021
InstitutionenChemie und Pharmazie > Institut für Organische Chemie
Identifikationsnummer
WertTyp
10.3390/sym13071298DOI
Stichwörter / KeywordsSPIN COUPLING-CONSTANTS; PROTON-BOUND HOMODIMERS; NUCLEAR-MAGNETIC-RESONANCE; CHEMICAL-SHIFT TENSOR; X-RAY-DIFFRACTION; AB-INITIO; BASIS-SETS; N-15 NMR; HCN; COMPLEXES; cyanide; hydrogen bonding; non-covalent interactions; NMR; chemical shift anisotropy; scalar coupling; DFT; GIAO
Dewey-Dezimal-Klassifikation500 Naturwissenschaften und Mathematik > 540 Chemie
StatusVeröffentlicht
BegutachtetJa, diese Version wurde begutachtet
An der Universität Regensburg entstandenJa
URN der UB Regensburgurn:nbn:de:bvb:355-epub-479251
Dokumenten-ID47925

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