#39;-diphosphate</span></div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;                                              <span class="stringliteral">&#39;OF2&#39;</span>,  <span class="comment"># 2 ferric ion, 1 bridging oxygen</span></div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;                                              <span class="stringliteral">&#39;BEF&#39;</span>,  <span class="comment"># beryllium trifluoride ion</span></div><di