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5

I propose the following solution. I've made a number of changes: First of all I find your use of enumerate a bit strange. It looks like you want equation numbers for your reactions. If that's it then I'd use an equation environment. With the class option leqno its numbers will be placed on the left. I'd still use chemfig's \schemestart ... \schemestop ...


3

chemfig's molecules can get a default rotation by specifying an angle as option first in the molecule: \chemfig{[:<angle>]...} Choosing the right angle will do the trick here: \documentclass{article} \usepackage{chemfig} \definesubmol{imidazole}{N*5(=-{NH}-(-)=-)} % imidazole ring \begin{document} ...


2

If it should like (near) exactly as in the picture, the following modification may be useful. The angles are assummed to be 30 and 120 degrees; hence the correction: 120+72=192. Your original definition is left in the preamble for comparision. \documentclass{article} \usepackage{chemfig} \definesubmol{ring}{N*5(=-{NH}-(-)=-)} % imidazole ring ...


1

Please use the package chemfig for this. For the braces you should have a look in chapter 12.5 of its documentation. Here is some code to start with: % arara: pdflatex \documentclass{article} \usepackage{chemfig} \begin{document} \setatomsep{7mm} \chemfig{x\,Et-O-Si(-[2]OEt)(-[6]OEt)-O-Si(-[2]OH)(-[6]OEt)-OH} \chemrel[$-\mathrm{m\,H_2O}$]{->} ...



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