What's the name of this compound? It is a semi product of Reimer-Tiemann reaction.
edit: I think its Sodium salicylaldehyde, but i'm not sure.
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$\begingroup$ You might be interested in reading our guidelines on how to ask nomenclature questions. $\endgroup$– user7951Commented Dec 31, 2016 at 17:15
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1 Answer
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That's supposed to be the sodium salt of salicylaldehyde, also known as sodium salicylaldehyde, sodium ortho-formylphenolate, 2-hydroxybenzaldehyde sodium salt or sodium 2-formylphenoxide. CAS number: 3116-83-4.
There's actually an error in the structure. The oxygen should have a negative charge if the sodium is written with a positive charge. The salt as a whole is neutral. What's written here is one lone pair, there should be 3 of those and a negative charge.
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$\begingroup$ thanks, btw there is a negative charge on oxygen in the structure! $\endgroup$– Raknos13Commented Dec 31, 2016 at 10:27
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$\begingroup$ You mean the line above it? That's not a minus sign which it should be, it's too long and to make it clear it should be above and to the right of the atom symbol, just like the plus sign on sodium. What's drawn here is what is usually used for a lone pair, a longer line right above/on the side/below the atom. $\endgroup$– DSVACommented Dec 31, 2016 at 10:31
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$\begingroup$ i'm not sure, i used to think that the long line above (mostly oxygen) is a negative charge. this textbook is actually pretty confusing and many-a-times unclear. are you sure that it's used for a lone pair? $\endgroup$– Raknos13Commented Dec 31, 2016 at 10:36
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$\begingroup$ Well yes, that's what they mean but it's just a very, very bad (and in my eyes just plain wrong) way to do it, since you won't be able to differentiate between a negative charge and a lone pair. And yes, that's definitely a lone pair "symbol" which they just abuse as a negative charge for no good reason. $\endgroup$– DSVACommented Dec 31, 2016 at 10:41
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$\begingroup$ yeah i checked some other reactions and they put the charges on top of the symbols. imgur.com/a/5EbV8 $\endgroup$– Raknos13Commented Dec 31, 2016 at 10:46