Calculated electric dipole moments
17 02 27 16 39
The electric dipole moment is a measure of the charge distribution in a molecule.
The calculated dipole moments are reported as an unsigned total dipole and as three cartesians
components in units of Debye.
To change units see section: FAQ Help; Units; Choose Units; Dipole and Quadrupole
Please enter the chemical formula
Rules for chemical formula
- Enter a sequence of element symbols followed by numbers
to specify the amounts of desired elements (e.g., C6H6).
- Elements may be in any order.
- If only one of a given atom is desired, you may omit
the number after the element symbol.
- Parentheses may be used to group atoms.
- Multiple specifications for an atom will be added.
This means that CH3(CH2)4CH3 will be
treated the same as C6H14.
- A comma delimited list of several species may be entered.
- Ions are indicated by placing + or - at the end of the formula (CH3+, BF4-, CO3--)
Species in the CCCBDB
- Mostly atoms with atomic number less than than 36 (Krypton), except for most of the transition metals.
See section I.B.1 for a periodic table view.
- Six or fewer heavy atoms and twenty or fewer total atoms.
Versions 8 and higher have a few substituted benzenes with more than six heavy atoms.
Versions 12 and higher have bromine-containing molecules.
References dealing with electric dipoles
||KB Wiberg, PR Rablen "Comparison of atomic charges derived via different procedures" J. Comp. Chem. 1993, 14, 1504-1518
||KL Bak, J Gauss, T Helgaker, P Jorgensen, J Olsen,"The accuracy of molecular dipole moments in standard electronic structure calculations" Chem. Phys. Lett. 319 (2000) 563-568
Are we missing any? Please email us at