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Wednesday, 30 April 2014


valeric acid
acide pentanoic
109-52-4 CAS


Predict NMR spectrum

spectrum for Valeric acid


Shift (ppm)

2D [1H,1H]-TOCSY
spectrum for Valeric acid

spectrum for Valeric acid


1D DEPT135
spectrum for Valeric acid


2D [1H,13C]-HSQC

spectrum for Valeric acid


2D [1H,13C]-HMBC
spectrum for Valeric acid




Saturday, 19 April 2014

Ethyl 4-nitrobenzoate NMR

Ethyl 4-nitrobenzoate

13 C NMR








Shift (ppm)
167.4 114.1
151.5 60.6
132.0 14.7

picked up from a japanese site

9H11NO2)の1H-NMRスペクト ル (300MHz)である。図アを示す化合物はIRスペクトル (neat)にて1700 cm-1付近に、又、図イを示す化合物はIRスペクトル (Nujol)にて 1650 cm-1付近に共に強い吸収を示す。スペクトルと化合物の正し い組合せはどれか。ただし、図アの3.4 ppm付近、図イの6.3 ppm付近及び7.9 ppm付近のシグナルは重水処理すると消失する。また測定溶媒に基づくシグナ ルは除いてある。

 a 2-ethoxybenzamide
 b 4-ethoxybenzamide
 c ethyl 3-aminobenzoate
 d ethyl 4-aminobenzoate
    ア イ 
  1 a c 
  2 a d 
  3 b c
  4 b d 
  5 c a 
  6 c b

is (a and a) the figure below (C any compound that is shown in a ~ D 9 H 11 NO 2 of) 1 H-NMR spectrum is (300MHz). 1700 cm IR spectrum at (neat) compounds exhibit a Zua -1 in the vicinity, also, compounds that exhibit a spinal is 1650 cm IR spectrum at (Nujol) -1 shows a strong absorption both in the vicinity. Right combination of compounds and any spectrum. However, I lost signal around 3.4 ppm of Zua, of around 7.9 ppm and 6.3 ppm near the spinal when you heavy water processing. The signal based on the measurement solvent have been removed.  a 2-Ethoxybenzamide  b 4-Ethoxybenzamide  c ethyl 3-Aminobenzoate  D ethyl 4-Aminobenzoate

  1 a c 
  2 a D 
  b 3 c
  4 b D 
  c 5 a 
  6 c b

  • Take a tour
     Take a tour


    Kingdom of Tonga
    Puleʻanga Fakatuʻi ʻo Tonga
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    Tonga - Wikipedia, the free encyclopedia

    Tonga ([ˈtoŋa]; Tongan: Puleʻanga Fakatuʻi ʻo Tonga), officially the Kingdom of Tonga, is a Polynesian sovereign state and archipelago comprising 177 ...
    You may not have heard of Tonga, but if you are an adventure buff, then you are definitely in for a treat. Tonga comprises 150 islands, 36 of which are inhabited and lived by people. These islands are very small, but offer very big in terms of tourism and leisure. Also, the guys love to try the customs of Tonga.
    Marriage Ceremonies
    To maximize the thrill of the experience, make sure you attend at least one marriage ceremony in Tonga. This should not be too hard as Tonga are very helpful and will be more than willing to invite into their ceremonies and festivities. Marriage ceremonies in Tonga are sensational and they love to attend one.
    Food Tonga
    The way to eat your food Tonga is certainly very different from the way they eat yours. Given that, do not forget to try the local food in Tonga. One is the Lu Pulu - corned beef with a touch of coconut cream and cooked with taro leaves. There are also local beverages in Tonga, including kava, made from pepper plant.
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    The customs of Tonga are very native and unique. Here you will find that people are very friendly and welcoming. Make sure you try to assimilate their culture and customs are very appreciated in Tonga, and certainly do not want to forget this, not to offend a native of Tonga.
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    Logically, Tonga is home to a lot of beaches. By far, which means the islands of Tonga 150, at least half of the accessible beaches. Here, you can have activities such as sunbathing, playing or even a picnic with his family.
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    Although animals are not in abundance in Tonga, are nevertheless given prime importance. Flying foxes and iguanas are everywhere. You can even treat them as exotic foods, however, this practice is discouraged.
    Island Hopping
    If you are an adventurous person and likes the idea of ​​going from one island to the other, then Tonga is definitely the best place for you. The Tonga islands are very close to each other. The best thing to do is that you can take a boat from one island to another, allowing the excitement and fun of the Greek islands.
    Fun water activities
    In Tonga, it is fun. And what's more fun than surfing in the Pacific? The tides in Tonga are perfect for this kind of water fun you should try, and you can try water skiing or canoeing water in these places like this will be fun for you and your family.
    Diving in Tonga
    Another fun water activities you can try in Tonga is scuba diving. Now, why is diving in Tonga much different than elsewhere? Just because Tonga is located at the bottom of the Pacific Ocean, the sea is abundant wildlife in which you may see water species rare and stunning coral formations through their own eyes.
    Mountain Activities
    Volcanoes and mountains are in abundance in Tonga. This allows you to have a final trekking experience. In Tonga, such activities are managed in a very safe, and can also get to see volcanoes in a very close view.

    Hopping Island

    Tongan Food

    Tongan Beaches