XX.B.1.

List of Hydrogen-bonded dimers

index	H Donor		H Acceptor		structure	comment
1	H2O	Water	H2O	Water
2	NH3	Ammonia	NH3	Ammonia
3	H2O	Water	NH3	Ammonia
4	NH3	Ammonia	H2O	Water		rearranges to water-ammonia
5	H2O	Water	H2CO	Formaldehyde
6	H2CO	Formaldehyde	H2O	Water		rearranges to water-formaldehyde
7	H2O	Water	CH3OH	Methyl alcohol
8	CH3OH	Methyl alcohol	H2O	Water
9	HCOOH	Formic acid	H2O	Water
10	H2O	Water	HCOOH	Formic acid		to O-C
11	H2O	Water	HCOOH	Formic acid		to O=C
12	H2O	Water	CH3OCH3	Dimethyl ether
13	CHONH2	formamide	NHCHNH2	aminomethanimine		both are donors