3dBcyclobutane
3dBcyclobutane is a hypothetical molecule that would be a derivative of cyclobutane. The "3dB" prefix indicates the presence of a deuterium atom, a stable isotope of hydrogen with one proton and one neutron, at the third position of the cyclobutane ring. Cyclobutane itself is a cycloalkane with the chemical formula C4H8. It consists of a ring of four carbon atoms, each bonded to two hydrogen atoms. The ring structure of cyclobutane is strained due to the deviation of bond angles from the ideal tetrahedral angle of 109.5 degrees.
In 3dBcyclobutane, one of the hydrogen atoms at the carbon atom numbered three in the cyclobutane ring