Found 103 results
Author Title Type [ Year(Asc)]
1974
Authors: Plus R., and Lutz M.
Title: Study of Band IV of Porphin by Resonance Raman Spectroscopy
Abstract:

Excitation spectra were obtained for 21 resonance Raman bands of porphin from 455 to 515 nm. Each of them exhibited one to three maxima which generally lay close to 453, 475 and 490 nm. These three resonance levels were tentatively attributed to the presence of pure electronic transitions in band IV. The few other maxima could be interpreted as resonance at vibrational sublevels of band III. The structure of band IV is thus shown to be of greater complexity than has been generally suspected up to now.


Date: 01/1974 Publisher: Spectroscopy Letters Pages: 73 - 84 DOI: 10.1080/00387017408067222 Available at: http://www.tandfonline.com/doi/abs/10.1080/00387017408067222http://www.tandfonline.com/doi/pdf/10.1080/00387017408067222
More Details
1973
Authors: Plus émi
Title: Étude par spectroscopie infrarouge des composés Mg(NH 3 ) 6 Cl 2 et Mg(ND 3 ) 6 Cl 2
Abstract:

The infrared spectra of pure Mg(NH3)6Cl2 and Mg(ND3)6Cl2 were recorded from 4 000 to 50 cm-1 at 40 and — 180 °C. The observed bands are assigned. The hydrogenated compound was studied by differential thermal analysis.

The observed infrared spectral data are compared with the previously reported experimental values for other divalent metals (Co2+, Ni2+, Fe2+, Mn2+). This comparison proves that (he coordination bond is stronger for Mg than for the other metals.


Date: 01/1973 Publisher: Journal de Chimie Physique Pages: 900 - 904 DOI: 10.1051/jcp/1973700900 Available at: http://jcp.edpsciences.org/10.1051/jcp/1973700900http://jcp.edpsciences.org/10.1051/jcp/1973700900/pdf
More Details
Authors: Plus émi
Title: Étude vibrationnelle de complexes du magnesium. Spectroscopie Raman de Mg(NH3)6Cl2et Mg(ND3)6Cl2
Abstract:

L'auteur a pu obtenir les fréquences des vibrations actives en diffusion Raman du chlorure de magnésium hexa‐amminé hydrogéné et deutérié à l'état cristallisé. Toutes les vibrations attendues ont pu être observées pour la première fois pour un composé de ce type (vibrations internes et vibrations externes). L'attribution de toutes les bandes du spectre est proposée. Ces résultats, rapprochés de ceux obtenus par spectroscopie infrarouge, permettent de connaître la structure vibrationnelle complète du complexe. L'éclatement de certaines vibrations montre que les coordinats ne sont pas en rotation libre et que leur orientation donne à l'ion complexe la symétrie du groupe ponctuel D3d.


Date: 12/1973 Publisher: Journal of Raman Spectroscopy Pages: 551 - 563 DOI: 10.1002/jrs.v1:610.1002/jrs.1250010605 Available at: http://doi.wiley.com/10.1002/jrs.v1%3A6http://doi.wiley.com/10.1002/jrs.1250010605https://onlinelibrary.wiley.com/doi/full/10.1002/jrs.1250010605https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjrs.1250010605
More Details

Pages