ChemInform Abstract: Carbonylvanadium Halfsandwich Complexes: Preparation, Structure, and 51V NMR Spectra of Derivatives of η5-C5H5V(CO)4.

ChemInform ◽  
1988 ◽  
Vol 19 (48) ◽  
Author(s):  
M. HOCH ◽  
D. REHDER
Keyword(s):  
Nmr Spectra ◽  
51V Nmr ◽  
Derivatives Of

Preparation of 2,3-Dideoxy-2,3-epimino and 3,4-Dideoxy-3,4-epimino Derivatives of 1,6-Anhydro-β-D-hexopyranoses by Mitsunobu Reaction

1998 ◽  
Vol 63 (6) ◽  
pp. 813-825 ◽  
Author(s):  
Jiří Kroutil ◽  
Tomáš Trnka ◽  
Miloš Buděšínský ◽  
Miloslav Černý
Keyword(s):  
Nmr Spectra ◽  
Mitsunobu Reaction ◽  
Derivatives Of ◽  
C Nmr

A series of new 2-, 3- and 4-benzylamino-2-, 3- and 4-deoxy derivatives of 1,6-anhydro-β-D-hexopyranoses were prepared from 1,6:2,3- and 1,6:3,4-dianhydro-β-D-hexopyranoses by treatment with benzylamine and converted into 2,3-(N-benzylepimino)-2,3-dideoxy- and 3,4-(N-benzylepimino)-3,4-dideoxy-β-D-hexopyranoses of the D-allo, D-galacto and D-talo configuration by Mitsunobu reaction. The structures of benzylamino and benzylimino derivatives were confirmed by 1H and 13C NMR spectra.

ChemInform Abstract: NMR SPECTRA OF PYRAZOLE DERIVATIVES OF BORON

1983 ◽  
Vol 14 (23) ◽  
Author(s):  
W. J. LAYTON ◽  
K. NIEDENZU ◽  
S. L. SMITH
Keyword(s):  
Nmr Spectra ◽  
Pyrazole Derivatives ◽  
Derivatives Of

Carbon-13 NMR spectra of 1,6-bis derivatives of hexa-2,4-diynes

1988 ◽  
Vol 26 (7) ◽  
pp. 626-628 ◽  
Author(s):  
K. C. Majumdar ◽  
R. N. De ◽  
B. K. Sen ◽  
A. Banerji ◽  
A. K. Mitra
Keyword(s):  
Nmr Spectra ◽  
Derivatives Of

scholarly journals Carbonylniobium Chemistry, IV Derivatives of η5 -C5H5Nb(CO)4 with Tridentate Phosphines

1983 ◽  
Vol 38 (4) ◽  
pp. 446-448 ◽  
Author(s):  
Martin Hoch ◽  
Dieter Rehder
Keyword(s):  
Nmr Spectra ◽  
Membered Ring ◽  
Vanadium Complexes ◽  
Ring Complexes ◽  
Derivatives Of ◽  
Induced Reaction

Abstract The photo-induced reaction between CpNb(CO)4 and Ph2P(CH2)2PR(CH2)2PPh2 (L; R = Ph, Cy) yields the chelated five-membered ring complexes cis-[CpNb(CO)2L] (two isomers in the case of R = Cy). The uncordinated PPh2 group reacts with CpNb(CO)3THF to form CpNb(CO)2(μ-L)CpNb(CO)3. IR, 31P and 93Nb NMR spectra are discussed and compared with corresponding data of the analogous vanadium complexes.

Syntheses, geometry optimization, and electronic structure of N-and C-substituted benzonaphthyridines

2006 ◽  
Vol 60 (1) ◽  
Author(s):  
M. Deska ◽  
W. Śliwa
Keyword(s):  
Electronic Structure ◽  
Ab Initio ◽  
13C Nmr ◽  
Effective Charge ◽  
Nmr Spectra ◽  
Geometry Optimization ◽  
13C Nmr Spectra ◽  
Derivatives Of ◽  
Hydroxyethyl Group

AbstractSynthesis of N-and C-substituted derivatives of benzo[h][1,6]naphthyridine, bearing 2-hydroxyethyl group has been made by quaternization reaction and by condensation of corresponding methylbenzonaphthyridines with formaldehyde. For six derivatives of isomeric benzo[c][1,5]-, benzo[h][1,6]-, and benzo[f][1,7]naphthyridines the 13C NMR spectra are discussed.For ten compounds the geometry was optimized with the AM1 and, in one case also with the ab initio 6–31G method; their effective charge values have also been calculated.

NMR spectra of derivatives of 4, 5, 6, 7-tetrafluoroindole

1971 ◽  
Vol 11 (5) ◽  
pp. 759-766
Author(s):  
E. I. Berus ◽  
V. A. Barkhash ◽  
Yu. N. Molin
Keyword(s):  
Nmr Spectra ◽  
Derivatives Of

Photoreaktionen von Dekacarbonyldirhenium mit Allen und unverzweigten Allenderivaten / Photoreactions of Decacarbonyldirhenium with Allene and Unbranched Derivatives of Allene

1995 ◽  
Vol 50 (4) ◽  
pp. 649-660 ◽  
Author(s):  
Cornelius G. Kreiter ◽  
Wolfgang Michels ◽  
Gerhard Heeb
Keyword(s):  
Nmr Spectra ◽  
Crystal And Molecular Structure ◽  
Reaction Products ◽  
X Ray Diffraction ◽  
X Ray ◽  
H Nmr ◽  
Oxidative Rearrangement ◽  
Dirhenium Complexes ◽  
Derivatives Of ◽  
By Products

Decacarbonyldirhenium (1) reacts upon UV irradiation with allene (2), 1,2-butadiene (3) and 2,3-pentadiene (4) preferentially by CO substitution and oxidative rearrangement to the corresponding enneacarbonyl-μ-η1:3-endiyl-dirhenium complexes 5, 9, and 15 and to the octacarbonyl-μ-η2:2-allene-dirhenium complexes 6, the stereoisomers 10, 11, and 16. At elevated temperature 5, 9, and 15 loose CO and yield by a reductive rearrangement also the complexes 6, 10, 11, and 16. In addition to these main products, depending upon the allene derivative used, various by-products are obtained.By-products of the reaction o f 1 with 2 are octacarbonyl-μ-η3:3-(2,3-dimethylene-buta-1,4- diyl)dirhenium (7) and μ-η2:2-allene-hexacarbonyl-μ-η1:3-1-propene-1,3-diyl-dirheniurn (8). The photo reaction of 1 with 3 yields, in addition to 9-11, tetracarbonyl-η3-(E-5-ethylidene- 4-methyl-2-cyclopenten-1-yl)rhenium (12) and tetracarbonyl-η3-(Z-5-ethyliden-4- methyl-2-cyclopenten-1-yl)rhenium (13) as a mixture of isomers. 1 and 4 form the by-products tetracarbonyl-η3-(EZ-3-penten-2-yl)rhenium (17), tetracarbonyl-η3-(EE-3-penten-2-yl)rhenium (18) and heptacarbonyl-μ-η1:2:1:2-(4,5-dimethyl-2,6-octadiene-3,6-diyl)dirhenium (19) with an unusually bridging and chelating ligand. The constitutions of the reaction products have been concluded from the IR and 1H NMR spectra. For 19 the crystal and molecular structure has been determined by X-ray diffraction analysis.

Bimetallic copper–vanadium mandelato complexes with bpy and phen as ancillary ligands. 51V NMR spectra of vanadates in DMSO

Polyhedron ◽  
2019 ◽  
Vol 167 ◽  
pp. 62-68 ◽  
Author(s):  
Mária Šimuneková ◽  
Peter Schwendt ◽  
Róbert Gyepes ◽  
Ján Šimunek ◽  
Juraj Filo ◽  
...  
Keyword(s):  
Nmr Spectra ◽  
Ancillary Ligands ◽  
51V Nmr
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