ecoli Posted September 21, 2006 Share Posted September 21, 2006 I got a chemistry model building set (balls and sticks), and it came with carbon atoms that have 4 holes (which makes sense) but also with carbons that have 5 holes. I never knew that you can have carbon molecules that can make 5 bonds. When does it do this? Link to comment Share on other sites More sharing options...
akcapr Posted September 21, 2006 Share Posted September 21, 2006 it doesnt Link to comment Share on other sites More sharing options...
ecoli Posted September 21, 2006 Author Share Posted September 21, 2006 it doesnt Then why did they give me six carbon atoms with 5 holes?? Link to comment Share on other sites More sharing options...
woelen Posted September 21, 2006 Share Posted September 21, 2006 How are these holes oriented? I assume that the carbon atoms with 4 holes have all holes oriented towards the end of a tetrahedron. For double-bonded molecules, like H2C=CH2, the 3D structure is not tetrahedral, but it is flat. With these 5-hole carbons, you probably can model molecules like these. Also, can you model molecules like HC≡CH, with a triple bond? Link to comment Share on other sites More sharing options...
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