It is possible to determine the specific rotation of the mixture and, with knowledge of the specific rotation of the pure enantiomer, the "'optical purity "'can be determined.
22.
It is possible to determine the specific rotation of the mixture and, with knowledge of the specific rotation of the pure enantiomer, the "'optical purity "'can be determined.
23.
The subsequent Brook rearrangement to the silyl ether and reduction with lithium aluminium hydride occur with retention so that the final reaction product is the opposite enantiomer of the starting material with opposite sign for specific rotation.
24.
A USB port is better than a PS2 port ( which is round and requires a specific rotation, meaning you may have to try an infinite number of rotations until you find the right one ).
25.
For example, D-glucose forms an alpha crystal that has specific rotation of + 112?and melting point of 146 �C, as well as a beta crystal that has specific rotation of + 19?and melting point of 150 �C.
26.
For example, D-glucose forms an alpha crystal that has specific rotation of + 112?and melting point of 146 �C, as well as a beta crystal that has specific rotation of + 19?and melting point of 150 �C.
27.
Furthermore, a libero is not allowed to serve, according to international rules, with the exception of the NCAA women's volleyball games, where a 2004 rule change allows the libero to serve, but only in a specific rotation.
28.
So we find that the degree of rotation depends on the color of the light ( the yellow sodium D line near 589 nm wavelength is commonly used for measurements ), and is directly proportional to the path length L through the substance and the amount of circular birefringence of the material \ Delta n which, for a solution, may be computed from the substance's specific rotation and its concentration in solution.
29.
It is a colourless, coniine-like liquid, bp . 175.6 �C / 767 mmHg, specific rotation [ ? ] D " 81.92?at 20 �C . The monohydrochloride crystallises in leaflets, mp . 191 192 �C; the monohydrobromide in leaflets, mp . 189 190 �C; the platinichloride in orange crystals, mp . 153 154 �C; the aurichloride in leaflets, mp . 77 78 �C; and the picrate in long needles, mp . 121 122 �C.
30.
D-( " S " )-Coniine has since been determined to be a colorless alkaline liquid, with a penetrating odour and a burning taste; has D 0?0.8626 and D 19?0.8438, refractive index " n " 23?D 1.4505, and is dextrorotatory, [ ? ] 19?D + 15.7?. ( See comments about the specific rotation below, under " Enantiomers " . ) L-( " R " )-Coniine has [ ? ] 21?D 15?and in other respects resembles its D-isomer, but the salts have slightly different melting points; the platinichloride has mp . 160 �C ( L�ffler and Friedrich report 175 �C ), the aurichloride mp . 59 �C.
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