Detail of "32846-66-5"

Reference

The structure of cubane mono and 1,4-dicarboxylic acids in lyotropic liquid crystalline solution

The structure of cubane mono and 1,4-dicarboxylic acids in lyotropic liquid crystalline solution. Tracey, Alan S. (Dep. Chem., Simon Fraser Univ., Burnaby, BC V5A 1S6, Can.). Can. J. Chem., 62(1), 101-4 (English) 1984. CODEN: CJCHAG. ISSN: 0008-4042. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) Section cross-reference(s): 75 1H NMR studies of cubane mono and 1,4-dicarboxylic acids in lyotropic liq. cryst. soln. show that these mols. 53578-15-7 and 32846-66-5 are also in the experiment. are distorted from the cubane structure. The protons of cubane dicarboxylate which are vicinal to their resp. carboxylate group are displaced towards those groups along the C3 axis resulting in an elongation relative to a cube. In cubane monocarboxylate there is also a displacement of vicinal protons toward the carboxyl group, but this is accompanied by a displacement of the protons one carbon further removed, away from the carboxyl groups. The shape of this latter compd. is comparable to that of a section of a cone with the narrow end of the cone defining the proton positions adjacent to the carboxyl group while the wide end of the cone defines the positions of the adjacent set of protons. The remaining proton of course sits on the C3 axis which dets. the center of symmetry of the cone. .

Thermochemical study of some cubane derivatives

Thermochemical study of some cubane derivatives. Avdonin, V. V.; Kirpichev, E. P.; Rubtsov, Yu. I.; Romanova, L. B.; Ivanova, M. E.; Eremenko, L. T. (Inst. Chem. Physics Chernogolovka, Russian Academy Sciences, Chernogolovka 142432, Russia). Izvestiya Akademii Nauk, Seriya Khimicheskaya, (10), 2472-2473 (Russian) 1996 Institut Organicheskoi Khimii im. N. D. Zelinskogo Rossiiskoi Akademii Nauk. CODEN: IASKEA. DOCUMENT TYPE: Journal CA Section: 69 (Thermodynamics, Thermochemistry, and Thermal Properties) Thermochem. study of 1,4-cubane dicarboxylic acid (1), di-Et 1,4-cubane dicarboxylic acid (2), diisopropyl 1,4-cubane dicarboxylic acid (3) and bis(2'-fluoro-2',2'-dinitro)ethyl 1,4-cubane dicarboxylic acid (4) was performed. Std. 32846-66-5 and 168985-04-4 which are cas registry numbers of chemicals are mentioned. enthalpies of combustion DcH° and formation DfH° for these substances, which were in satisfactory agreement with the exptl. ones, were obtained. The strain energies (Es) of the cubic structure of the derivs. 1-4 were calcd. Es did not change upon the substitution of H atoms in cubane by various functional groups and was equal to Es of the structure of the cubane. The reliability of the single known value of DfH° in the cubane cryst. state, 541.8 kJ×mol-1 (129.5 kcal×mol) was confirmed. .