✦ LIBER ✦

Lanthanide porphyrin complexes: Investigation by means of NMR spectroscopy and mathematical simulation

✍ Scribed by T. A. Babushkina; L. G. Koreneva; V. F. Zolin

Publisher: John Wiley and Sons
Year: 1986
Tongue: English
Weight: 530 KB
Volume: 24
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260241203

No coin nor oath required. For personal study only.

✦ Synopsis

The structure of a lanthanide porphyrin complex was reinvestigated using a new treatment for the paramagnetic NMR shifts. It was found to differ from that obtained previously in that the ion was closer to the macrocyclic ligand. The new treatment is based on ab inifio estimation of the coefficients describing the anisotropy of magnetic susceptibility, proportional to the pseudo-contact shifts. These coefficients were estimated using an electrostatic model of the complex; the 'extra' Egand @-diketonate) was taken into account and shown to be essential. The NMR spectrum of a non-axial complex under conditions of restricted rotation of the 'extra' Egand is described.

📜 SIMILAR VOLUMES

Crystal-Structure Determination of Powde

Crystal-Structure Determination of Powdered Paramagnetic Lanthanide Complexes by Proton NMR Spectroscopy

✍ Gwendal Kervern; Anthony D'Aléo; Loïc Toupet; Olivier Maury; Lyndon Emsley; Guid 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 675 KB

## Abstract **Verschiebung im Kristall**: Die NMR‐Spektroskopie eignet sich für die Strukturbestimmung von mikrokristallinen paramagnetischen Festkörpern ohne Isotopenanreicherung. Paramagnetische Effekte, die unter bestimmten Aufnahmebedingungen in ^1^H‐NMR‐Spektren auftreten, werden genutzt, um d

Crystal-Structure Determination of Powde

Crystal-Structure Determination of Powdered Paramagnetic Lanthanide Complexes by Proton NMR Spectroscopy

✍ Gwendal Kervern; Anthony D'Aléo; Loïc Toupet; Olivier Maury; Lyndon Emsley; Guid 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 675 KB

ChemInform Abstract: Preparation of Lant

ChemInform Abstract: Preparation of Lanthanide Complexes of Heteropolytungstates and Characterization by 183W and 31P NMR Spectroscopy.

✍ J. BARTIS; M. DANKOVA; M. BLUMENSTEIN; L. C. FRANCESCONI 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 30 KB 👁 1 views

In vivo Investigation of Plant-Cell Meta

In vivo Investigation of Plant-Cell Metabolism by means of natural-abundance 13C-NMR spectroscopy

✍ Ralf Lutterbach; Joachim Stöckigt 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 German ⚖ 522 KB

## Hydroquinone (1) Arbutin (2) CHydroxyphenyl primeveroside (3) Our thanks are due to the Deutsche Forschungsgemeinschaft, Bonn-Bad Godesberg, and to the Fonds der Chemischen Industrie, Frankfurt, for providing financial support. We also thank Prof. W. E. Court (Mold) for linguistic advices.

Investigation of Structure and Mobility

Investigation of Structure and Mobility of Silica Bonded Stationary Acridine Phases by Means of Fluorescence and NMR Spectroscopy

✍ Egelhaaf, H.-J. ;Oelkrug, D. ;Ellwanger, A. ;Albert, K. 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 282 KB 👁 1 views

Investigation of the α-cyclodextrin-myo-

Investigation of the α-cyclodextrin-myo-inositol phosphate inclusion complex by NMR spectroscopy and molecular modeling

✍ Serge Crouzy; Florence Fauvelle; Jean-Claude Debouzy; Mathias Göschl; Yves Chapr 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 765 KB

I H\_31p NMR spectroscopy and molecular dynamics (MD) have been used to investigate the myo-inositol 2-phosphate (MY2P) inclusion complex in ct-cyclodextrin (a-CD). From spectral analyses, it has not been possible to estimate the stoichiometric ratio of MY2P to o~-CD, however several geometrical con