Basic notation like C 2 H 3 O 2 - doesn't give any indication to the structure or the functional group producing the charge. Writing the structural formula, or CH 3 COO - , at least indicates a methyl, a carbonyl, and a deprotonated hydroxyl are present.
Nothing really beats: Housewives have vacuum cleaners and washing machines but a backyard scientist's job is never finished Quote: Originally posted by DraconicAcid. Yes, I've seen it used in several textbooks. It's just wrong. The two oxygens are equivalent due to resonance, and writing them as if they were different is just silly.
While we are at it, I have seen acetate as both Ac- and OAc- depending on whether the Ac refers to an acetyl group or the acetate ion. The difference probably relates to whether one is working in OC or performing elementary acid-base work.
The representation below may be the most accurate but I will not be using it routinely: The single most important condition for a successful synthesis is good mixing - Nicodem. Where is the Carbon meant to sit on that one? I assumed it was the center point but looking at blogfasts it would put it on the end of the bottom left side? Quote: Originally posted by gdflp.
It is a compact notation. It is efficient but takes a little getting used to. Hydrogens are not shown and neither are their bonds. Carbons are not shown but their bonds are. The number of carbon in a chain is indicated by the number of nodes. Thus ethane is indicated by a short straight line. Propane is two short lines at an angle. Longer chains are shown by a zigzag. I have no idea how methane is denoted. I guess it isn't. All other elements are shown with bonds indicated as single, double or triple as appropriate.
Resonance is shown as a dotted line to indicate the delocalised electrons. In general, the most convenient unambiguous form is used in chemical notation. In the field of organic chemistry the abbreviation Ac refers to the acetyl group. Ac is also the symbol for the chemical element actinium , but confusion between actinium and the acetyl group is rare, since actinium has virtually no role in organic chemistry. Categories: Acetates Carboxylate anions.
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