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thankyou Revenged. some very useful info there, i'm amazed at how fast heroin works, straight to the brain in under 20 second... thanks again Revenged.

yeah sorry about that you are most certainly right they could h bond but like ecoli said the molecule is very big. thankyou for all your help guys...i can concluded that a majority of the intermolecular bonding will be van der waals with quite a bit of dipole too, i will also included that some H bonding is possible (although not a primary force). it would also be a great help if anyone could give me the esterification reaction of the creation of heroin...I’m unable to find out a straight answer at this stage. also revenged if you could enlighten me on how the heroin molecule alters to travel around the human body, to be transported by the haemoglobin in the bloodstream it would need to be soluble right? so would it then become diamorphine hydrochloride its salt form? and what this is the difference between Diacetylmorphine and Diacetylmorphine Hydrochloride (in reference to molecular structure) anyone? Thankyou again everyone.

thx for trying...srry John but covalent bonds are intramolecular not intermolecular. Umm about the H bonds Neon, they would be a lot stronger than van der waals but in order to H bond you need a H connected to an electronegative charged ions (N, O, or F) and although the O's could H bond there is just no H's for them to bond too thx for trying. I would really appreciate any further help.

Hey Could anyone help me out with identifying all the intermolecular forces within a heroin molecule? I’m pretty sure its mainly van der waals but if i could get some clarification on how exactly they are working, what functional groups and ions are causing them would be a great help Thankyou very much. here's a heroin molecule (link) http://en.wikipedia.org/wiki/Heroin