Crystallographic data of α-glucoheptonic acid γ-lactone

Abstract

Crystals of fl-glucoheptonic acid 7-1actone, prepared by recrystallization of the commercial compound from water, were found to be orthorhombic with a o = 7-61, b o = 17-25, c o = 6-60 A (all ±0-02 A).

Enthalpies of combustion and formation of α-d-glucoheptono-1,4-lactone and α,β-glucooctanoic-1,4-lactone

“…Three experiments were carried out for each method. The density of lactone GH was obtained by a report of its crystallographic study [9]. The specific heat capacity, densities, and variations of the massic energy with pressure, (ou/op) T , of the cotton, paraffin oil, and benzoic acid were taken from the indicated bibliography [10,11].…”