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Trata sobre la forma en que se le asigna prioridad a los elementos que rodean al carbono quiral (esteroisomeria) para asignar los prefijos D (dextrogiro) y L (Levogiro). Dicha prioridad está dada por la regla de Cahn Ingold Prelog, la cual se describe a continuación.
Reglas de Cahn-Ingold-Prelog para priorizar grupos
A mayor número atómico mayor prioridad : En la siguiente secuencia disminuye la prioridad I, Br, Cl, F, O, N, C, H.
Si los átomos comparados tienen el mismo número atómico, la prioridad aumenta con el número másico: En la siguiente secuencia disminuye la prioridad T, D, H. (i.e. 3H, 2H, 1H).
Si los dos átomos son idénticos, nos desplazamos por la cadena de átomos comparando átomo a átomo hasta encontrar diferencias. En la siguiente secuencia disminuye la prioridad BrCH2-, FCH2-, HOCH2-, CH3CH2-, CH3-.
En el caso de enlaces múltiples se consideran tantos enlaces sencillos entre los átomos como multiplicidad tenga:
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The relative difficulties of men's and women's style
Both men and women can feel the difficulties of maintaining their wardrobe up-to-date and in season, yet men's fashion frequently feels a lot simpler. Of course, for both genders, costumes and fashion options may be quite as elaborate, and there are lots of'stylish'items which can easily become fashion faux pas - who is able to say they often times see people travelling in 70s flames? On the other side, men's style includes a few staple goods that will exist forever - which man is going to keep an eye out of place with a good-quality, tailored suit, for example? Choose basic cuts, colours and materials and you'll never look out-of-place.
Why common men's style is amazing
The common man's suit has hardly changed for over a hundred years. True, there are several options for various events, however they are all common in their quest for a clever, sharp look for the person. The good thing about traditional style for men is that it's simply stylish effortlessly neat. A well-groomed gentleman will almost always appear his sharpest in a well-tailored suit, and this is a testament to the style of such apparel. A suit will undoubtedly be utilized to work in several jobs due to the professional look it provides to the wearer, instilling a sense of respect and confidence. Equally a match will be utilized to many social situations, like a tuxedo to a black-tie affair. This amazing flexibility which allows suits to be used in almost all situations is what gives it its amazing side and a lasting devote men's fashion.
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