# Dipole moment of borazine

What is the dipole moment of borazine? I tried googling it but can't find a reliable source. I searched in JD Lee too. It might have it but I could not find.

This NIST publication lists the dipole moment as zero, while drugfuture.com (I've never heard of this site) reports a value of 0.50 as measured in benzene at $\pu{25^oC}$.
To be absolutely certain the molecule's point group has to be found. To have a dipole the molecule must belong to $C_1, C_{nv}, (n>1)$ and $C_s$ point groups.
As borazine is not planar (according to wikipedia page) and seems to belong to $C_{3v}$ so it should have a dipole. However, looking at the structure the dipole has to be small due to the way the atoms are arranges around the 3 fold axis and the small displacement of the plane containing the B to that of the N atoms. If you can find B-N, N-H, B-H bond dipole values you could calculate the dipole, at least get an approximate value.
• If I remember correct, borazine is planar $D_\mathrm{3h}$? – orthocresol Apr 16 '17 at 8:32
• @orthocresol yes $D_{3h}$if planar and so no dipole. – porphyrin Apr 16 '17 at 8:49