On Thu, 15 May 2008, William Scott wrote:
> On May 15, 2008, at 10:01 AM, Ed Pozharski wrote:
>> 1.2A (not surprisingly since this is about the length of covalent
>> bond).
>
> A carbon-carbon single bond is about 1.55 Å.
the van der Waals radius of hydrogen is 1.2A (Eisenberg/Crothers, Pauling,
1960 ). this distance is referred to in "Sheldrick's 1.2A rule".
http://scripts.iucr.org/cgi-bin/paper?ad0198
-bryan
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