Idealised structure of a compound with linear geometry.
In chemistry, the Linear molecular geometry describes the arrangement of three or more atoms placed at an expected bond angle of 180°. Linear organic molecules, e.g. acetylene (HC≡CH), are often described by invoking sp orbital hybridization for the carbon centers. Many linear molecules exist; prominent examples include carbon dioxide (O=C=O), hydrogen cyanide (HC≡N), and xenon difluoride (XeF2). Linear anions include azide (N3−) and thiocyanate (SCN−). Linear cations include nitronium ion (NO2+).
- ^ Greenwood, N. N.; & Earnshaw, A. (1997). Chemistry of the Elements (2nd Edn.), Oxford:Butterworth-Heinemann. ISBN 0-7506-3365-4.