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×î½üͶһƪActa EµÄÎÄÕ£¬±à¼¶Ô¾«ÐÞ·½·¨²»ÂúÒ⣬ҪÇóÏêϸÃèÊö£¬Í¨¹ý×Éѯ½âµ¥¾§µÄÀÏʦ£¬¸ø±à¼½øÐÐÁËÈçÏ»ظ´£¨ÀÏʦдµÄ£©£º When the hydrogen atoms was placed at the calculated positions, the maximum shift for H3 has arrived at the level of 3.587, however, other H atoms bonded to C atoms are within the suitable arrange. So the H3 bonded to C16 was found according to Q peaks and further refined. ±à¼»¹ÊDz»ÂúÒ⣬»Ø¸´ÈçÏ£º The _publ_section_exptl_refinement does not give clear information about how each type of H atoms were refined and the description is still not completely consistent with the atomic coordinates table. Unfortunately I was unable to understand the statement about the treatment of the H3 atom, and justification of its refinement is not clear. ͬ½âµ¥¾§µÄÀÏʦ½»Á÷ºó£¬´óÖÂÁ˽⵽¾«Ð޵Ĺý³ÌΪ£º ¾¹ýÀíÂÛ¼ÓÇâºó£¬ÓÉÓÚH3µÄÍÖÇòÆ¯ÒÆ£¨ÓпÉÄܱíÊö²»×¼È·£©£¬µ¼ÖÂ(¦¤/¦Ò)max=3.587£¬ËùÒÔÓÖÀûÓÃQ·å£¨¾ßÌåÊÇʲô²»Çå³þ£¬ÀÏʦ½âÊÍÊÇÑÜÉäʵÑéµÃµ½µÄʵ¼ÊÊý¾Ý£©½«H3½øÐÐÁ˹̶¨£¬´Ó¶ø½«(¦¤/¦Ò)max¿ØÖÆÔÚ< 0.001£¬ÀÏʦÈÏΪÕâÖÖ¾«ÐÞ·½·¨ºÜ³£¼û£¬²»ÐèÒªÌØ±ðÃèÊö¡£ ËùÒÔÏëÇëÎÊ£¬¸÷λÔÚ¾«ÐÞÖÐÓÐûÓÐÓöµ½ÀàËÆµÄÎÊÌ⣬±à¼µÄÎÊÌâ¸ÃÔõôȥ»Ø´ð¡£ ÏÂÃæÊÇË͸åÖеÄRefinement²¿·Ö£º H atoms treated by a mixture of independent and constrained refinement, with C¡ªH 0.95 (Caromatic), 0.98 (Cmethyl), 1.00 (CH), N¡ªH 0.85 (N1), 0.88 (N3) Å, and Uiso(H) = 1.2Ueq(C) [1.5Ueq(C) for methyl H atoms]. When the hydrogen atoms was placed at the calculated positions, the maximum shift for H3 has arrived at thelevel of 3.587, however, other hydrogen atoms bonded to Carbon atoms are within the suitable arrange. So the H3 bonded to C16 was found according to Q peaks and further refined. ÎÒÈÏΪ¶Ô¾«ÐÞ·½·¨µÄÃèÊöȷʵû´ïµ½ÒªÇó£¬ÒòΪÒÔǰûÓнӴ¥¹ý£¬Çë½Ì¸ßÊÖ¾ßÌå¸ÃÔõÑùÀ´ÃèÊö£¬ÏÈл¹ýÁË¡£ |
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2Â¥2009-05-11 20:08:49
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leooo(½ð±Ò+2,VIP+0): 5-11 23:30
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·Ç³£Ææ¹Ö. Èç¹û H3 was placed at the calculated position, ÄÇËü¾Í²»Ó¦¸Ã±»refined, ËùÒԾͲ»»áÓÐ the maximum shift for H3 has arrived at the level of 3.587 µÄÎÊÌâ. ÄãÏëÏë, ûÓÐrefined, ÆäλÖúÍueqÔõô»á±ä? ¶øÈç¹ûH3ºóÀ´Èç×÷Õß˵µÄ the H3 bonded to C16 was found according to Q peaks and further refined. ÄÇËüÔÚ¸Õ¿ªÊ¼refineʱ²Å¿ÉÄÜÆ®, µ¼ÖÂshift¹ý´ó. |

3Â¥2009-05-11 20:38:55
leooo
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4Â¥2009-05-11 23:29:56
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5Â¥2009-05-12 07:24:29
leooo
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6Â¥2009-06-01 16:01:08
lizuoxi
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7Â¥2009-06-01 19:14:31
lizuoxi
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leooo(½ð±Ò+2,VIP+0): 6-14 11:41
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8Â¥2009-06-01 19:19:03
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9Â¥2009-06-01 20:49:26













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