Conductometric and spectroscopic investigations on the reactions between N-methylthiazolidine-2 (3H) -selone (1) and N-methylbenzothiazole-2 (3H) -selone (2) with Br2

Polyhedron

Volumn 17, Issue 18, 1998, Pages 3111-3119

  Arca, Massimiliano ^a   Demartin, Francesco ^b   Devillanova, Francesco A ^a   Garau, Alessandra ^a   Isaia, Francesco ^a   Lippolis, Vito ^a   Piludu, Silvia ^a   Verani, Gaetano ^a  

^a UNIVERSITY OF CAGLIARI   (Italy)

^b UNIVERSITY OF MILAN   (Italy)

Author keywords

77; Conductometric measurements; Hexabromoselenate (2 ); Hypervalent selenium compounds with bromine; N methylbenzothiazole 2 (3H) selone; N methylthiazolidine 2 (3H) selone; Se and 13C NMR and UV visible spectroscopies

Indexed keywords

EID: 0001449822     PISSN: 02775387     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0277-5387(98)00076-X     Document Type: Article

References (17)

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8. + (cation of 4) .
9. 2imidazoline molar ratio, and subsequently decrease to the 1 : 1 molar ratio. Above the 1 : 1 molar ratio, conductivity increases and, as found for 2, is time independent. In those cases, it was shown that the reactions involve the formation of dications containing the Se Se bridge as intermediates in the formations of the hypervalent 10-Se-3 selenium compounds. In the present case, however, the observed trends in the conductivity exclude the formation of the corresponding dications of 1 and 2 on the way to 3 and 5. Very recently, S. Husebye reported a scheme to collect the wide variety of compounds formed in reaction between chalcogen ligands and halogens, and showed different possible pathways for the formation of dications and hypervalent selenium compounds. On the basis of the results obtained with the imidazoline-2-selone derivatives, that scheme should be enlarged at least to include the direct formation of hypervalent selenium compounds from dications by addition of dihalogens.
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14. 6] has been recorded in MeCN solution for solubility reasons.
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