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The absolute configuration (S) of the hydroxyl group was determined by comparing the specific rotation data ([¦Á] +20.1¡ã, MeOH) and the Cotton effects at 215 (¨C6.2), 283 (¨C2.9), 319 (¨C2.9) nm with those in the liteature ([¦Á] ¨C12.2¡ã, MeOH) and the Cotton effect at 212 (+ 25.2), 236 (¨C18.2), 255 (¨C8.4), 277 (¨C1.5) and 298(¨C6.7) nm in the CD spectrum ÎÒÏë±í´ïµÄÒâ˼£º»¯ºÏÎïhydroxyl groupµÄ¾ø¶Ô¹¹ÐÍ ÊÇͨ¹ýÓëÎÄÏ׵ıÈÐýºÍCDÏà±È½ÏµÃÀ´µÄ¡£ ÎҵϝºÏÎïÊÇÕýµÄ ±ÈÐý ([¦Á] +20.1¡ã, MeOH) ¸ºµÄCD 215 (¨C6.2), 283 (¨C2.9), 319 (¨C2.9) ÎÄÏ×µÄÊÇ ¸ºµÄ±ÈÐý¹â¶È ([¦Á] ¨C12.2¡ã, MeOH) £¬ÕýµÄCD 212 (+ 25.2), 236 (¨C18.2), 255 (¨C8.4), 277 (¨C1.5) and 298(¨C6.7) ×îºÃ¾ä×ÓÖаÑÊý¾Ý¶¼´øÉÏ ÕâÑùÓбȽÏÒâÒå ÊÇ°É ÎÒдµÄÕâ¸öËÆºõÈÝÒ×ÒýÆðÎó»á Çëר¼Ò°ïÎÒ¿´¿´ СµÜ°Ýл£¡ |
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»ð¼ý´©Æ¨Æ¨: ½ð±Ò+10, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, rotation ÊDZÈÐý¹â¶È£¬ Cotton effects ÊÇCD ÊÇÁ½¸ö²»Í¬µÄ²âÊÔ½á¹û£¬²»¹ý»¹ÊÇллÄãÁË£¡ 2014-01-12 11:14:26
»ð¼ý´©Æ¨Æ¨: ½ð±Ò+10, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, rotation ÊDZÈÐý¹â¶È£¬ Cotton effects ÊÇCD ÊÇÁ½¸ö²»Í¬µÄ²âÊÔ½á¹û£¬²»¹ý»¹ÊÇллÄãÁË£¡ 2014-01-12 11:14:26
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The Absolute Stereochemistry of compound hydroxyl group was determined by comparing the specific rotation data ([¦Á] +20.1¡ã, MeOH) of the circular dichroism with literiture¡£Compound rotation ([¦Á] +20.1 ¡ã, MeOH) was 215 (-6.2), 283 (-2.9), 319 (¨C2.9) while literiture rotation was ([¦Á] -12.2 ¡ã, MeOH) was 212 (+ 25.2), 236 (-18.2), 255 (-8.4), 277 (-1.5) and 298 (-6.7 ).Õý¸ºÐý¹â²»Ó÷Ò룬ֱ½Ó·ûºÏ±íʾ¡£the Cotton effects ¿ÉÒÔ»»Îªrotation£¬¿´¸öÈËϲºÃ£¡ |

2Â¥2014-01-09 15:47:04
spiegboy
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| i would suggest you rearrange the sentence. First explain the term you are going to compare, then present the results out of this comparison. this meets the general logic set. |
3Â¥2014-01-11 20:47:49














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