Simply begin typing or use the editing tools above to add to
this article. Once you are finished and click submit, your
modifications will be sent to our editors for review. ...a
linear fashion—that is, the bonds from the carbon atom to the
two substituent atoms are situated at an angle that is less than
180°—in both the triplet and the singlet states. The bond angle
for the singlet state, however, is predicted to be larger than
that for the triplet state. These predictions are fully
supported by experiments. The simplest carbene, methylene, has
been... ...define the corners of an equilateral triangle, a
geometry that requires the C−C−C angles to be 60°. This 60°
angle is much smaller than the normal tetrahedral bond angle of
109.5° and imposes considerable strain (called angle strain) on
cyclopropane. Cyclopropane is further destabilized by the
torsional strain that results from having three eclipsed... The
angle between electron pairs in a tetrahedral arrangement is
109.5°. However, although H 2O is indeed