| ²é¿´: 482 | »Ø¸´: 4 | |||
| ±¾Ìû²úÉú 1 ¸ö ·ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴 | |||
| µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû | |||
shushen_jian
|
[ÇóÖú]
¼±Çó·Ò룡
|
||
|
1.The reaction time/product yield profiles of the nitration of benzene and alkyl derivatives all run linearly with a similar gradient over a wide range of reaction times until the substrates are completely consumed,showing no kinetic dependence of the reaction on the concentration of substrates. 2.The relative reactivities of mono-substituted benzenes such as alkyl- and halogeno-benzenes,phenolic ethers and some acetals are summarized in Table10,together with the respective partial rate factors. 3.Presented in Fig.4 is a Hammett plot of the meta and para values of the partial rate factors versus Brown's ¦Ò+ constants.Except for the methoxy group represented by a solid circle ,this plot produces a straight line with a ¦Ñ-value of -6.8 and a correlation coefficient r of 0.952. |
» ²ÂÄãϲ»¶
²ÄÁÏר˶283Çóµ÷¼Á
ÒѾÓÐ7È˻ظ´
Ò»Ö¾Ô¸±±¾©2£¬²ÄÁÏÓ뻯¹¤308Çóµ÷¼Á
ÒѾÓÐ4È˻ظ´
Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
Ò»Ö¾Ô¸9²ÄÁÏѧ˶297ÒѹýÁù¼¶Çóµ÷¼ÁÍÆ¼ö
ÒѾÓÐ8È˻ظ´
278Çóµ÷¼Á
ÒѾÓÐ9È˻ظ´
285Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
Ò»Ö¾Ô¸ÎäÀí²ÄÁϹ¤³Ì302µ÷¼Á»·»¯»ò»¯¹¤
ÒѾÓÐ20È˻ظ´
348Çóµ÷¼Á
ÒѾÓÐ3È˻ظ´
±¾¿Æ211 ·ÖÊý293ÇëÇóµ÷¼Á
ÒѾÓÐ3È˻ظ´
Ò»Ö¾Ô¸ÄÏÅ©090401£¬268£¬Çóµ÷¼Á
ÒѾÓÐ4È˻ظ´
8814402
ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)
- ·ÒëEPI: 509
- Ó¦Öú: 18 (СѧÉú)
- ¹ó±ö: 0.381
- ½ð±Ò: 12916.1
- É¢½ð: 47
- ºì»¨: 16
- Ìû×Ó: 4183
- ÔÚÏß: 357.8Сʱ
- ³æºÅ: 1184404
- ×¢²á: 2011-01-06
- רҵ: Ò©ÎïѧÆäËû¿ÆÑ§ÎÊÌâ
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
¡ï
Mally89(½ð±Ò+1): ¸ÐлӦÖú£¡~ 2011-05-25 09:47:09
Mally89(½ð±Ò+1): ¸ÐлӦÖú£¡~ 2011-05-25 09:47:09
| 3.Presented in Fig.4 is a Hammett plot of the meta and para values of the partial rate factors versus Brown's ¦Ò+ constants.Except for the methoxy group represented by a solid circle ,this plot produces a straight line with a ¦Ñ-value of -6.8 and a correlation coefficient r of 0.952. ͼ4ËùʾµÄÊÇ·ÖËÙ¶ÈϵÊýÏà±È²¼ÀʦÒ+³£ÊýµÄmetaÖµºÍparaÖµµÄhammettͼ¡£³ýÁËһʵÐÄÔ²µã±íʾµÄ¼×Ñõ»ù£¬´ËͼÏÔʾΪ¦ÑֵΪ-6.8¡¢Ïà¹ØÏµÊýrΪ0.952µÄÖ±Ïß¡£ |
4Â¥2011-05-24 22:15:42
8814402
ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)
- ·ÒëEPI: 509
- Ó¦Öú: 18 (СѧÉú)
- ¹ó±ö: 0.381
- ½ð±Ò: 12916.1
- É¢½ð: 47
- ºì»¨: 16
- Ìû×Ó: 4183
- ÔÚÏß: 357.8Сʱ
- ³æºÅ: 1184404
- ×¢²á: 2011-01-06
- רҵ: Ò©ÎïѧÆäËû¿ÆÑ§ÎÊÌâ
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
shushen_jian(½ð±Ò+10, ·ÒëEPI+1): ·ÒëµÄ²»ÊǺÜרҵ 2011-05-25 17:09:04
|
1.The reaction time/product yield profiles of the nitration of benzene and alkyl derivatives all run linearly with a similar gradient over a wide range of reaction times until the substrates are completely consumed,showing no kinetic dependence of the reaction on the concentration of substrates. ±½ºÍÍé»ùÑÜÉúÎïµÄÏõ»¯·´Ó¦µÄ·´Ó¦Ê±¼ä/Éú³ÉÎï²úÂÊÇúÏßÔÚÖ±µ½µ×ÎïÍêÈ«ºÄ½ßµÄ½Ï¿í·´Ó¦Ê±¼ä·¶Î§ÄÚ¾ùÏÔʾΪÏàËÆÐ±ÂʵÄÖ±Ïߣ¬ÏÔʾ·´Ó¦¶Ôµ×ÎïŨ¶ÈÎÞ¶¯Á¦Ñ§ÒÀÀµÐÔ |
2Â¥2011-05-24 19:59:07
8814402
ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)
- ·ÒëEPI: 509
- Ó¦Öú: 18 (СѧÉú)
- ¹ó±ö: 0.381
- ½ð±Ò: 12916.1
- É¢½ð: 47
- ºì»¨: 16
- Ìû×Ó: 4183
- ÔÚÏß: 357.8Сʱ
- ³æºÅ: 1184404
- ×¢²á: 2011-01-06
- רҵ: Ò©ÎïѧÆäËû¿ÆÑ§ÎÊÌâ
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
| 2.The relative reactivities of monosubstituted benzenes such as alkyl and halogenobenzenes,phenolic ethers and some acetals are summarized in Table10,together with the respective partial rate factorsµ¥È¡´ú±½ÀàÖîÈçÍé»ùºÍ±´ú±½£¬·ÓÃѺÍijЩËõÈ©µÄÏà¶Ô·´Ó¦ÐÔ¼°¸÷×ԵķÖËÙ¶ÈϵÊý¸ÅÀ¨ÔÚ±í10ÖС£ |
3Â¥2011-05-24 22:06:52
8814402
ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)
- ·ÒëEPI: 509
- Ó¦Öú: 18 (СѧÉú)
- ¹ó±ö: 0.381
- ½ð±Ò: 12916.1
- É¢½ð: 47
- ºì»¨: 16
- Ìû×Ó: 4183
- ÔÚÏß: 357.8Сʱ
- ³æºÅ: 1184404
- ×¢²á: 2011-01-06
- רҵ: Ò©ÎïѧÆäËû¿ÆÑ§ÎÊÌâ
5Â¥2011-05-24 22:18:28















»Ø¸´´ËÂ¥