scholarly journals Complex Formation of 1,6-Anhydro-<i>β</i>-Maltose and Sodium Ions Using Single-Crystal X-Ray Crystallography and NMR Spectroscopy

2013 ◽  
Vol 04 (08) ◽  
pp. 361-367
Author(s):  
Takashi Fujimoto ◽  
Daisuke Miura ◽  
Takayuki Kato ◽  
Osamu Kamo ◽  
Yuichi Shimoikeda ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Complex Formation ◽  
Single Crystal ◽  
Sodium Ions ◽  
X Ray ◽  
X Ray Crystallography

Characterization of the complex formation of 1,6-anhydro-β-maltose and potassium ions using NMR spectroscopy and single-crystal X-ray crystallography

2011 ◽  
Vol 346 (13) ◽  
pp. 1991-1996 ◽  
Author(s):  
Takashi Fujimoto ◽  
Takayuki Kato ◽  
Yosuke Usui ◽  
Osamu Kamo ◽  
Kazuo Furihata ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Complex Formation ◽  
Single Crystal ◽  
Potassium Ions ◽  
X Ray ◽  
X Ray Crystallography

scholarly journals 2-(3,5-Dimethyl-1H-pyrazol-1-yl)thiazolo[4,5-b]pyridine

Molbank ◽  
10.3390/m1077 ◽  
2019 ◽  
Vol 2019 (3) ◽  
pp. M1077
Author(s):  
Lan ◽  
Zheng ◽  
Wang
Keyword(s):  
Nmr Spectroscopy ◽  
Single Crystal ◽  
1H Nmr ◽  
Structure Determination ◽  
1H Nmr Spectroscopy ◽  
Pyrazole Ring ◽  
Hydrogen Atoms ◽  
X Ray ◽  
X Ray Crystallography

The compound 2-(3,5-dimethyl-1H-pyrazol-1-yl)thiazolo[4,5-b]pyridine (1) was synthesized with a yield of 71% by the reaction of 1-(thiazolo[4,5-b]pyridine-2-yl)hydrazine and acetylacetone. The structure was characterized by a single-crystal X-ray structure determination as well as 1H and 13C{1H} NMR spectroscopy. X-ray crystallography on 1 confirms the molecule consists of a pyridine–thiazole moiety and the pyrazole ring, and all non-hydrogen atoms are planar.

The Conformation of Some 1,6-Disulfide-Bridged D-Hexopyranoses

2005 ◽  
Vol 58 (3) ◽  
pp. 199 ◽  
Author(s):  
Ethan D. Goddard-Borger ◽  
Brian W. Skelton ◽  
Robert V. Stick ◽  
Allan H. White
Keyword(s):  
Nmr Spectroscopy ◽  
Single Crystal ◽  
1H Nmr ◽  
1H Nmr Spectroscopy ◽  
Similar Investigation ◽  
X Ray ◽  
X Ray Crystallography ◽  
Structure Determinations ◽  
Derivatives Of

The use of 1H NMR spectroscopy, in tandem with X-ray crystallography, has cast light on the conformation of the 1,6-disulfide-bridged derivatives of d-gluco-, d-manno-, d-allo-, d-galacto-, and d-talo-pyranose. A similar investigation was performed on the thiosulfinate derived from the d-gluco disulfide. Single-crystal X-ray structure determinations are reported for (1S,5S,6S,7S,8R)-6,7,8-tribenzoyloxy-9-oxa-2,3-dithiabicyclo[3.3.1]nonane, (1S,5S,6S,7R,8R)-6,7,8-tribenzoyloxy-9-oxa-2,3-dithiabicyclo[3.3.1]nonane, and (1S,2S,5S,6S,7S,8R)-6,7,8-triacetoxy-9-oxa-2,3-dithiabicyclo[3.3.1]nonane 2-oxide.

Synthesis, Spectroscopic Characterization, and Structure of closo-1,10-B10H8F22- and Related Fluorinated Derivatives of B10H102-

1997 ◽  
Vol 62 (8) ◽  
pp. 1310-1324 ◽  
Author(s):  
Sergei V. Ivanov ◽  
Svetlana M. Ivanova ◽  
Susie M. Miller ◽  
Oren P. Anderson ◽  
Nikolai T. Kuznetsov ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Ir Spectroscopy ◽  
Single Crystal ◽  
Spectroscopic Characterization ◽  
X Ray ◽  
X Ray Crystallography ◽  
Fluorinated Derivatives ◽  
Derivatives Of

The treatment of salts of the B10H102- anion with the commercially available N-fluoro reagent 1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) (F-TEDA) resulted in the formation of fluorinated derivatives of this ten-vertex borane dianion. The effects of changing the solvent, temperature, and reagent stoichiometry were studied. The derivatives 1-B10H9F2-, 2-B10H9F2-, 1,2-B10H8F22-, 1,6-B10H8F22-, 1,10-B10H8F22-, and 1,2,10-B10H7F32- were examined by a combination of 11B and 19F NMR spectroscopy and by IR spectroscopy. The salt [Ph4P]2[1,10-B10H8F2] . 3 CH2Cl2 was structurally characterized by single-crystal X-ray crystallography: C51H48B10Cl6F2P2, monoclinic, C2/c, a = 13.8134(9), b = 19.141(1), c = 21.136(1) Å, β = 91.546(1)°, Z = 4, T = -100 °C, R = 0.077.

Pentafluorophenyl and phenyl substituted azidoborates

2002 ◽  
Vol 80 (11) ◽  
pp. 1444-1450 ◽  
Author(s):  
Wolfgang Fraenk ◽  
Thomas M Klapötke ◽  
Burkhard Krumm ◽  
Heinrich Nöth ◽  
Max Suter ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Single Crystal ◽  
Boron Atom ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Multinuclear Nmr ◽  
X Ray Crystallography ◽  
Multinuclear Nmr Spectroscopy

The azidoborates [(C6F5)4–nB(N3)n]– (n = 1–3) (1–3) were synthesized by reacting the corresponding borane with [R]N3 (R = Me4N, Ph4P). To study the influence of the electron withdrawing C6F5-substituent on the boron atom, [Me4N][(C6H5)3BN3] (4) was also prepared. All compounds were fully characterized by IR, Raman, and multinuclear NMR spectroscopy in addition to characterization by single crystal diffraction analyses.Key words: azidoborate, pentafluorophenyl, multinuclear NMR spectroscopy, X-ray crystallography.

2,9-Dimethyl-1,10-phenanthroline as Ligand in the Holo- and Hemidirected 1:1 and 1:2 Lead(II) Complexes

2005 ◽  
Vol 60 (2) ◽  
pp. 149-154 ◽  
Author(s):  
Ali Morsali
Keyword(s):  
Nmr Spectroscopy ◽  
Single Crystal ◽  
Elemental Analysis ◽  
X Ray ◽  
X Ray Crystallography ◽  
H Nmr ◽  
Coordinate Geometry ◽  
C Nmr

1:1 and 1:2 lead(II) complexes with 2,9-dimethyl-1,10-phenanthroline (Dmphen), {[Pb(Dmphen)(NO3)n] and [Pb(Dmphen)2(ClO4)2]} have been synthesized and characterized by CHN elemental analysis, IR, 1H NMR, 13C NMR and 207Pb NMR spectroscopy. The structure of these complexes was confirmed by X-ray crystallography. The single crystal X-ray data of [Pb(Dmphen)(NO3)n] show the complex to be polymeric and the Pb atom to have an unsymmetrical eight-coordinate geometry, the coordination being holodirected, whereas the [Pb(Dmphen)2(ClO4)2] complex is monomeric and the Pb atom has an unsymmetrical eight-coordinate geometry with the coordination hemidirected.

Gold cluster chemistry with the tin nucleophile stanna-closo-dodecaborate

2010 ◽  
Vol 75 (9) ◽  
pp. 963-970 ◽  
Author(s):  
Hartmut Schubert ◽  
Fritz-Robert Küchle ◽  
Lars Wesemann
Keyword(s):  
Nmr Spectroscopy ◽  
Single Crystal ◽  
Elemental Analysis ◽  
Gold Cluster ◽  
Mixed Valence ◽  
Gold Complex ◽  
Reaction Products ◽  
Cluster Chemistry ◽  
X Ray ◽  
X Ray Crystallography

The tin nucleophile [SnB11H11]2– reacts with the gold cluster [Au9(PPh3)8][NO3]3 under formation of the tin–gold complex [Au8(PPh3)7(SnB11H11)] (1). In reaction with four equivalents of the heteroborate a mixed valence tetrahedral gold cluster [Au4(PPh3)4(SnB11H11)2]2– with two edge bridging tin ligands was isolated. The reaction products were characterized by elemental analysis, NMR spectroscopy and single crystal X-ray crystallography.

Synthesis, structure and metal ion coordination of novel benzodiazamacrocyclic ligands bearing pyridyl and picolinate pendant side-arms

2019 ◽  
Vol 43 (38) ◽  
pp. 15072-15086
Author(s):  
Pavel A. Panchenko ◽  
Anastasia D. Zubenko ◽  
Ekaterina Y. Chernikova ◽  
Yuri V. Fedorov ◽  
Anna V. Pashanova ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Complex Formation ◽  
Transition Metal ◽  
Metal Ions ◽  
Metal Ion ◽  
Transition Metal Ions ◽  
X Ray ◽  
X Ray Crystallography

Complex formation of benzodiazacrown ethers with heavy and transition metal ions was studied using NMR spectroscopy, potentiometry and X-ray crystallography.

scholarly journals Anion binding by biotin[6]uril in water

2015 ◽  
Vol 13 (2) ◽  
pp. 369-373 ◽  
Author(s):  
Micke Lisbjerg ◽  
Bjarne E. Nielsen ◽  
Birgitte O. Milhøj ◽  
Stephan P. A. Sauer ◽  
Michael Pittelkow
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Single Crystal ◽  
Anion Binding ◽  
Guest Molecules ◽  
X Ray ◽  
X Ray Crystallography ◽  
Computational Calculations

We show that the newly discovered 6 + 6 biotin-formaldehyde macrocycle Biotin[6]uril binds a variety of anionic guest molecules in water. We discuss how and why the anions are bound based on data obtained using NMR spectroscopy, mass spectrometry, isothermal titrations calorimetry (ITC), computational calculations and single crystal X-ray crystallography.

Unusual Rearrangement of Naphthalene in the Synthesis of a Novel B8-B8-Bridged Derivative in the [(1,2-C2B9H11)2-3-Co]- Series. X-Ray Structure and 11B NMR Spectra of [8,8'-μ-(CH2-C9H6)-(1,2-C2B9H10)2-3-Co]- (CH3)4N+

1997 ◽  
Vol 62 (5) ◽  
pp. 746-751 ◽  
Author(s):  
Andreas Franken ◽  
Jaromír Plešek ◽  
Christiane Nachtigal
Keyword(s):  
Nmr Spectroscopy ◽  
Single Crystal ◽  
Nucleophilic Substitution ◽  
Nmr Spectra ◽  
X Ray Diffraction ◽  
X Ray ◽  
Unusual Rearrangement ◽  
Multinuclear Nmr Spectroscopy ◽  
11B Nmr ◽  
Isolated Compound

On treatment of the [(1,2-C2B9H11)2Co]- ion with naphthalene in presence of AlCl3 a remarkably bridged [8,8'-μ-(CH2-C9H6)-(1,2-C2B9H10)2-3-Co]- ion is obtained as a single isolated compound. The triatomic -CH2-C9H6- bridge is derived from the rearranged naphthalene nucleus. The mechanism of this reaction is obscure but it does resemble the "Electrophile-Induced Nucleophilic Substitution" reported earlier. The structure of the compound was established by multinuclear NMR spectroscopy and by single crystal X-ray diffraction.

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