Les chaleurs molaires des bibromures de deutéroéthylène

Abstract

La chaleur molaire des 1.1′‐dibrome‐éthanes a été déterminée à 37° C par une méthode basée sur la vitesse de déperdition de chaleur. La chaleur molaire s'élève de 0,85 cal/°C environ par atome de deutérium.

Isobaric (vapour+liquid+liquid) equilibrium data for (di-n-propyl ether+n-propyl alcohol+water) and (diisopropyl ether+isopropyl alcohol+water) systems at 100kPa

“…c Taken from Gabaldon et al [11]. d Taken from Wuyts [22]. e Estimated at 100 kPa from Lladosa et al [10].…”

“…The compositions of the heterogeneous ternary azeotropes are shown in table 4, together with the experimental data a Values lower than the standard deviation of the experimental procedure (±0.001). obtained by Wuyts in 1924 [22] for the (di-n-propyl ether + n-propyl alcohol + water) system and by Verhoeye in 1970 [23] for the (diisopropyl ether + isopropyl alcohol + water) system (compiled by Gmehling and Bolts [24]). Moreover, this table shows all the binary azeotropes.…”

Phthalocyanine Derivatives with Eight Peripheral Long‐Chain n‐Alkylseleno Substituents

“…Typically, alkali metal thiolates are used in this context, which are usually generated in situ by deprotonation of the corresponding thiols with a suitable base such as, for example, potassium, , , , , or cesium carbonate or sodium hydride . A particularly cheap, simple and straightforward method for the preparation of metal selenolates is the reaction of Grignard reagents RMgX with elemental selenium, pioneered more than a century ago by French scientists, affording selenolates of the type RSeMgX . Although this reaction has been studied predominantly for aryl derivatives, aliphatic compounds of this type are easily accessible, too .…”