التفاصيل البيبلوغرافية
| العنوان: |
Spectroscopic investigation and thermal behavior of new carbonyl complexes [M(CO)4(NN)(CuX)], (M = W, Mo; NN = 2,2'-bipyridine, 1,10-phenanthroline; X = Cl, SCN). |
| المؤلفون: |
Paula S. Haddad, Antonio E. Mauro, Vânia M. Nogueira, Stanlei I. Klein |
| المصدر: |
Transition Metal Chemistry; Nov2003, Vol. 28 Issue 8, p899-904, 6p |
| مستخلص: |
[M(CO)4(NN)] reacts with CuCl to give new heterobimetallic metal carbonyls of the type [M(CO)4(NN)(CuCl)], M = W, Mo; NN = 2,2'-bipyridine (bipy), 1,10-phenanthroline (phen). Reactions of [M(CO)4(NN)(CuCl)] with NaSCN produced the series of complexes of general formula [M(CO)4(NN)(CuSCN)]. The i.r. spectral of all the bimetallic carbonyls exhibited the general four &ngr; (CO) band patterns of the precursors. The u.v.vis. spectral data for precursors and products showed bands associated with π → π* (nitrogen ligands), d→d (intrametal), as well as MLCT d→π* (nitrogen ligands) and MLCT d → π*(CO) transitions. The [M(CO)4(NN)(CuX)] (X = Cl, SCN) emission spectra showed only one band associated with the MLCT transition. The t.g. curves revealed a stepwise loss of CO groups. The initial decomposition temperatures of the [M(CO)4(NN)(CuX)] series suggest that the bimetallic compounds are indeed thermally less stable than their precursors, and the X-ray data showed the formation of MO3, CuMO4, Cu2O and CuO as final decomposition products, M = W, Mo. The spectroscopic data suggests that the heterobimetallic compounds are polymeric. [ABSTRACT FROM AUTHOR] |
|
Copyright of Transition Metal Chemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |