Reference

The standard enthalpies of formation of adamantanoid compounds

The standard enthalpies of formation of adamantanoid compounds. 5. Adamantanols and adamantanone. Arora, Mohina; Steele, W. V. (Dep. Chem., Univ. Stirling, Stirling, Scot.). J. Chem. Thermodyn., 10(4), 403-7 (English) 1978. CODEN: JCTDAF. ISSN: 0021-9614. DOCUMENT TYPE: Journal CA Section: 69 (Thermodynamics, Thermochemistry, and Thermal Properties) The std. enthalpies of combustion of adamantan-2-one [700-58-3], adamantan-1-ol [768-95-6], and adamantan-2-ol [700-57-2] were measured in an aneroid combustion bomb calorimeter. The corresponding std. enthalpies of sublimation were calcd. from vapor pressures measured against temp. by means of a Bourdon gauge. The results of the exptl. measurements which are discussed and compared with those calcd. via empirical force-field calcns. are given below; all values are in kcal/mol. Adamanton-2-one, -Dh°f 1344.4, -Dh°f(c) 74.3, DH°sub 19.2, -DH°f(g) 55.1, adamantan-1-ol (values given in same order, resp.) 1392, 95.0, 20.7, 74.3; adamantan-2-ol, 1394.3, 92.7, 21.2, and 71.5.

The effect of membrane lipid perturbers on survival of mammalian cells to cold

The effect of membrane lipid perturbers on survival of mammalian cells to cold. Rule, G. S.; Frim, J.; Thompson, J. E.; Lepock, J. R.; Kruuv, J. (Dep. Phys. Biol., Univ. Waterloo, Waterloo, Ont., Can.). Cryobiology, 15(4), 408-14 (English) 1978. CODEN: CRYBAS. ISSN: 0011-2240. DOCUMENT TYPE: Journal CA Section: 3 (Biochemical Interactions) When Chinese hamster lung cells (V79) were pretreated with the lipid perturber butylated hydroxytoluene (I) [128-37-0] (.1 mM) before exposure to 5° for up to 12 days, colony survival was higher than in untreated controls (indicating protection), whereas no protection was obsd. at 20°. Protection by lipid perturbers adamantane (II) [281-23-2] or 2-adamantanone [700-58-3] (.1 mM) in serum-free medium in suspension culture at 5° was comparable to control cells with serum. In synchronized cells at 5°, I protected cells in all phases of the cell cycle from death, but to a greater degree in the G1 and S phases, whereas I at 20° resulted in no preferential protection at any phase of the cell cycle. I may be useful for preservation of organs and cells at suboptimal, above freezing temps.