CCL: a really silly question



The formula is E = (1 / 4 pi E0) (q1 q2 / r12).   Thus your conversion
 factor is 1 / (4 pi E0) where E0
 = 8.854 187 817... x 10-12  J^-1 C^2 m-1.
 Sorry for the lack of typography. 
     On Thursday, May 12, 2016 10:33 AM, Richard Leo Wood rwoodphd##msn.com
 <owner-chemistry%%ccl.net> wrote:
 Sent to CCL by: "Richard Leo Wood" [rwoodphd ~~ msn.com]
 I am trying to compute the electrostatic interaction for a pair of atoms
 > from an energy minimized structure.
 I have the charges on the two atoms as -0.47 and -0.55.  They are 3.15
 Angstroms apart.  So, E = (-0.55*-0.45)e-38 C^2/3.15e-8 m.
 I get 8.21e-32 C^2/m.  My question is how do I convert this to Joules?
 Richard
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 <html><head></head><body><div style="color:#000;
 background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica,
 Arial, Lucida Grande, sans-serif;font-size:13px"><div
 id="yui_3_16_0_ym19_1_1463074875924_34604" dir="ltr">The
 formula is E = (1 / 4 pi E0) (q1 q2 / r12). &nbsp; Thus your conversion
 factor is 1 / (4 pi E0) where E0 =&nbsp;<b style="color: rgb(255, 0,
 0); font-family: monospace; font-size: large; white-space: nowrap;
 background-color: rgb(204, 226, 243);"
 id="yui_3_16_0_ym19_1_1463074875924_34936">8.854&nbsp;187&nbsp;817...&nbsp;x&nbsp;10<sup
 id="yui_3_16_0_ym19_1_1463074875924_34937">-12</sup></b>&nbsp;
 J^-1 C^2 m-1.</div><div
 id="yui_3_16_0_ym19_1_1463074875924_34604"
 dir="ltr"><br></div><div
 id="yui_3_16_0_ym19_1_1463074875924_34604"
 dir="ltr">Sorry for the lack of typography.&nbsp;</div>
 <div
 class="qtdSeparateBR"><br><br></div><div
 class="yahoo_quoted" style="display: block;"> <div
 style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida
 Grande, sans-serif; font-size: 13px;"> <div style="font-family:
 HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;
 font-size: 16px;"> <div dir="ltr"><font
 size="2" face="Arial"> On Thursday, May 12, 2016 10:33
 AM, Richard Leo Wood rwoodphd##msn.com &lt;owner-chemistry%%ccl.net&gt;
 wrote:<br></font></div>  <br><br> <div
 class="y_msg_container"><br>Sent to CCL by: "Richard Leo
 Wood" [rwoodphd ~~ msn.com]<br>I am trying to compute the
 electrostatic interaction for a pair of atoms <br>&gt; from an energy
 minimized structure.<br><br>I have the charges on the two atoms as
 -0.47 and -0.55.&nbsp; They are 3.15 <br>Angstroms apart.&nbsp;
 So, E = (-0.55*-0.45)e-38 C^2/3.15e-8 m.<br><br>I get 8.21e-32
 C^2/m.&nbsp; My question is how do I convert this to
 Joules?<br><br>Richard<br><br><br><br>-=
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