如果按照规定使用和储存,则不会分解,目前没有已知的危险情况发生。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
二苯基二烃基硼酸 | diphenylborinic acid | 2622-89-1 | C12H11BO | 182.03 |
二苯基酸 | 2-Aminoethoxydiphenylborane | 524-95-8 | C14H16BNO | 225.098 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
二苯基二烃基硼酸 | diphenylborinic acid | 2622-89-1 | C12H11BO | 182.03 |
乙氧基(二苯基)硼烷 | ethoxydiphenylborane | 43185-52-0 | C14H15BO | 210.084 |
二苯基酸 | 2-Aminoethoxydiphenylborane | 524-95-8 | C14H16BNO | 225.098 |
Synthesis has been carried out of 15 examples of anionic diphenylboron complexes of arylpyruvic acids, and the structures of the compounds have been determined from spectroscopic data and from X-ray analysis of one of the compounds. Crystals of5j are monoclinic, P21/n,a = 9.5566(10), b = 15.961(3), c = 16.6382(6) Å, beta = 99.3239(10)°, and Z = 4, at 180 K. The structure was solved by direct methods and refined by full-matrix least-squares procedures to R(F2) = 0.056 for 6662 CCD data. 5j contains a triethylammonium cation and an anion containing a planar five-membered OBOCC ring, with cation and anion linked by an N-H···O hydrogen bond. Spectroscopic data and bond distances establish that the pyruvate ligand is the enol-tautomeric state.
Synthesis has been carried out of diarylboron chelates of 2- and 3-hydroxynitrones, of 2- and 3-hydroxyoximes, and of 2-carboxynitrones and a 2-carboxyoxime. The structures have been determined from spectroscopic data and from X-ray analyses of 5d, 9a, 11b, and 19. Crystals (at 180 K) of 5d are monoclinic, a = 10.543(2), b = 19.085(4), c = 10.2667(3) Å, β = 90.4978(7)°, Z = 4, space group P21/c; those of 9a are orthorhombic, a = 10.9913(5), b = 14.9329(7), c = 10.2460(13) Å, Z = 4, space group P212121; those of 11b are monoclinic, a = 11.227(2), b = 9.967(2), c = 17.0537(4) Å, β = 105.4179(5)°, Z = 4, space group P21/n; those of 19 are monoclinic, a = 11.1847(15), b = 13.715(3), c = 11.5559(5) Å, β = 104.8730(10)°, Z = 4, space group P21/n. The structures were solved by direct methods and refined by full-matrix least-squares procedures to R(F, I [Formula: see text] 3σ(I)) = 0.049, 0.047, 0.042, and 0.047, respectively, for CCD data for 5d, 9a, 11b, and 19. The four molecules contain five-, seven-, six-, and five-membered rings, respectively, with O-B-N groups in the 5d, 11b, and 19, and O-B-O in 9a; the rings exhibit various deviations from planarity, particularly the seven-membered ring.Key words: diarylboron chelates, hydroxyoximes, hydroxynitrones, carboxyoximes, carboxynitrones, organoboron compounds, crystal structure.