Buckingham (unit)

Physical unit
Unit name	Buckingham (unit)
Unit symbol	${\displaystyle \mathrm {B} }$
Physical quantity (s)	electric quadrupole moment
dimension	${\displaystyle {\mathsf {M^{1/2}L^{7/2}T^{-1}}}}$
system	Electrostatic CGS unit system , Gaussian CGS unit system
Named after	David Buckingham

The Buckingham ( unit symbol : B ), named after the Australian chemist David Buckingham , is a 1963 by Peter Debye introduced CGS - unit of the electric quadrupole moment . A Buckingham corresponds to the quadrupole moment of two opposite dipole moments of 1 Debye each  , which are 1  Angstrom apart:

${\displaystyle {\begin{aligned}\mathrm {1B} &=\mathrm {1D\cdot \mathrm {\AA} } &&\approx (\mathrm {3{,}33564\cdot 10^{-30}\ C\cdot m} )\cdot (\mathrm {10^{-10}m)} \\&=(\mathrm {10^{-18}\ Fr\cdot cm} )\cdot (\mathrm {10^{-8}cm} )\\&=\mathrm {10^{-26}\ Fr\cdot cm^{2}} \\&\approx \mathrm {10^{-26}} \cdot (\mathrm {3{,}33564\cdot 10^{-10}\ C} )\cdot (\mathrm {10^{-4}\ m^{2}} )&&\approx \mathrm {3{,}33564\cdot 10^{-40}\ C\cdot m^{2}} \end{aligned}}}$

With

• D for the Debye
• Å for the Ångström
• Fr for the Franklin
• C for the coulomb .

source

• Anthony Stone: The Theory of Intermolecular Forces . 2nd Edition. Oxford University Press, Oxford 2013, ISBN 978-0-19-967239-4 , pp. 283 .
• Birefringence Gives CO's . In: Chemical & Engineering News . tape 41 , no. 16 , 1963, pp. 40-43 , doi : 10.1021 / cen-v041n016.p040 .