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2 votes
0 answers
153 views

What does fractional notation represent in molecular formulas such as SiO4/2 or H2SiO2/2?

I'm going through some papers about HSQ (hydrogen silsesquioxane) and keep seeing this fractional notation being used: HSiO3/2 , SiO4/2 , H2SiO2/2 , H3SiO1/2. Example paper. I understand that the ...
Victor Pantazi's user avatar
6 votes
1 answer
102 views

Are atom coordinates in molfile necessary to produce a valid InChI identifier

I took this molfile of benzoic acid: ...
Paul Jurczak's user avatar
-2 votes
1 answer
301 views

Sucrose skeletal formula - missing Carbon and Hydrogen [duplicate]

I was reading the Wikipedia article about Sucrose, when I noticed that the skeletal formula was missing some $\ce{C}$ and $\ce{H}$ atoms. The chemical formula being $\ce{C12H22O11}$, I counted the $11$...
Richard Neumann's user avatar