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问题:想知道这个化合物的PKa值,大侠们帮帮忙!
类型:求助 (悬赏分:3分)
提问:maurice
等级:★★
版块:有机化学问题(jimuwei,fpcwin1211,netpanda,yjgzfl,Ftian,)
信誉:100%
回复:6
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时间:2006-03-01 14:45:43  编辑    加入/取消收藏    订制/取消短消息    举报该贴    

2-Chloro-4,5-dinitrobenzoic acid CAS:33458-98-9
谢谢了!
回复人:Ftian,★★ (资料请发到我的邮箱里,这里封纳米盘。) 时间:2006-03-01 18:21:32   编辑 1楼
1.59


回复人:ecustlian,▲▲▲ (相互学习,共同提高) 时间:2006-03-01 18:26:16   编辑 2楼
3.5左右


回复人:maurice,★★ (自信,乐观,富于激情,积极面对人生) 时间:2006-03-02 08:19:02   编辑 3楼
谢谢两位了!但有文献支持吗!谢谢了


回复人:Ftian,★★ (资料请发到我的邮箱里,这里封纳米盘。) 时间:2006-03-02 22:17:14   编辑 4楼
CA上写的,自己看
Registry Number: 33458-98-9
_

Formula: C7 H3 Cl N2 O6

CA Index Name: Benzoic acid, 2-chloro-4,5-dinitro- (8CI,9CI)

-- Properties --

Calculated
Property Value Condition Note
Bioconc. Factor 24.9 pH 1 (1)
Bioconc. Factor 8.75 pH 2 (1)
Bioconc. Factor 1.19 pH 3 (1)
Bioconc. Factor 1.0 pH 4 (1)
Bioconc. Factor 1.0 pH 5 (1)
Bioconc. Factor 1.0 pH 6 (1)
Bioconc. Factor 1.0 pH 7 (1)
Bioconc. Factor 1.0 pH 8 (1)
Bioconc. Factor 1.0 pH 9 (1)
Bioconc. Factor 1.0 pH 10 (1)
Boiling Point 451.8?5.0 癈 Press: 760 Torr (1)
Density 1.791?.06 g/cm3 Temp: 20 癈 (1)
Press: 760 Torr
Enthalpy of Vap. 74.92?.0 kJ/mol (1)
Flash Point 227.1?8.7 癈 (1)
Freely Rotatable Bonds 3 (1)
H acceptors 8 (1)
H donors 1 (1)
Koc 325 pH 1 (1)
Koc 114 pH 2 (1)
Koc 15.5 pH 3 (1)
Koc 1.87 pH 4 (1)
Koc 1.0 pH 5 (1)
Koc 1.0 pH 6 (1)
Koc 1.0 pH 7 (1)
Koc 1.0 pH 8 (1)
Koc 1.0 pH 9 (1)
Koc 1.0 pH 10 (1)
logD 2.17 pH 1 (1)
logD 1.72 pH 2 (1)
logD 0.85 pH 3 (1)
logD -0.07 pH 4 (1)
logD -0.69 pH 5 (1)
logD -0.86 pH 6 (1)
logD -0.88 pH 7 (1)
logD -0.88 pH 8 (1)
logD -0.88 pH 9 (1)
logD -0.88 pH 10 (1)
logP 2.271?.347 (1)
Molar Solubility Sparingly Soluble pH 1 (1)
Molar Solubility Sparingly Soluble pH 2 (1)
Molar Solubility Slightly Soluble pH 3 (1)
Molar Solubility Soluble pH 4 (1)
Molar Solubility Soluble pH 5 (1)
Molar Solubility Soluble pH 6 (1)
Molar Solubility Soluble pH 7 (1)
Molar Solubility Soluble pH 8 (1)
Molar Solubility Soluble pH 9 (1)
Molar Solubility Soluble pH 10 (1)
Molar Solubility Sparingly Soluble pH 2.44 (1)
Molecular Weight 246.56 (1)
pKa 1.59?.12 Most Acidic (1)
Vapor Pressure 5.95E-9 Torr Temp: 25 癈 (1)

Notes:
(1) Calculated using Advanced Chemistry Development (ACD/Labs) Software V8.14 for Solaris (?1994-2006 ACD/Labs)

-- Resources --

References: ~5

STN Files: CAPLUS, BEILSTEIN, CA, IFICDB, IFIPAT, IFIUDB, TOXCENTER, USPATFULL

(Additional Information is available through STN International. Contact your information specialist, a local CAS representative, or the CAS Help Desk for Assistance)

Database: REGISTRY


回复人:maurice,★★ (自信,乐观,富于激情,积极面对人生) 时间:2006-03-03 08:44:05   编辑 5楼
您的打分已通过系统审核,您的打分结果如下:

Microsoft JET Database Engine 错误 '80004005'

字段 'Letters.Expert' 不能是零长度的字符串。

/forum/postreply.asp,行 175
不知加分了没有,加了两次出现都上述结果,第一次求助,谢谢楼上两位,尤其是Ftian,加3分




回复人:maurice,★★ (自信,乐观,富于激情,积极面对人生) 时间:2006-03-03 08:51:33   编辑 6楼
已经打分了。


得分人:Ftian-3,ecustlian-1,


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