- published: 21 Jul 2010
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In organic chemistry, an alkyl substituent is an alkane missing one hydrogen. The term alkyl is intentionally unspecific to include many possible substitutions. An acyclic alkyl has the general formula CnH2n+1. A cycloalkyl is derived from a cycloalkane by removal of a hydrogen atom from a ring and has the general formula CnH2n−1. Typically an alkyl is a part of a larger molecule. In structural formula, the symbol R is used to designate a generic (unspecified) alkyl group. The smallest alkyl group is methyl, with the formula CH3−.
The word root alkyl is encountered in several contexts. Alkylation is an important operation in refineries, for example in the production of high-octane gasoline. Alkylating antineoplastic agents refer to a class of compounds that are used to treat cancer. In such case, the term alkyl is used loosely. For example, nitrogen mustards are well-known alkylating agents, but they are more complex than a mere hydrocarbon. In chemistry, alkyl refers to a group, a substituent, that is attached to other molecular fragments. For example, alkyl lithium reagents have the empirical formula Li(alkyl), where alkyl = methyl, ethyl, etc. A dialkyl ether is an ether with two alkyl groups, e.g., diethyl ether (O(C2H5)2).
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Who would have thought
That you could hurt me
The way you've done it?
So deliberate, so determined
And since you have been gone
I bite my nails for days and hours
And question my own questions on and on
So tell me now, tell me now
Why you're so far away
When I'm still so close
You don't even know the meaning of the words "I'm sorry"
You said you would love me until you die
And as far as I know you're still alive, baby
You don't even know the meaning of the words "I'm sorry"
I'm starting to believe it should be illegal to deceive a woman's heart
I tried so hard to be attentive
To all you wanted
Always supportive, always patient
What did I do wrong?
I'm wondering for days and hours
It's clear, it isn't here where you belong
Anyhow, anyhow
I wish you both all the best
I hope you get along
But you don't even know the meaning of the words "I'm sorry"
You said you would love me until you die
And as far as I know you're still alive, baby
You don't even know the meaning of the words "I'm sorry"
I'm starting to believe it should be illegal to deceive a woman's heart
You don't even know the meaning of the words "I'm sorry"
You said you would love me until you die
And as far as I know you're still alive, baby
You don't even know the meaning of the words "I'm sorry"
I'm starting to believe it should be illegal to deceive a woman's heart
Open heart
Open heart
It should be illegal to deceive a woman's heart
Open heart
Open heart