The triplet state has total spin quantum number S = 1 and is paramagnetic . The singlet state has S = 0 and is diamagnetic. The degeneracy of each state can be found with Hund's rule of maximum multiplicity: 2S + 1.
In molecules the free electrons can reside on one atom or on different atoms. A molecule can have a singlet state or triplet state with different energy and both states can inter-convert by a process called intersystem crossing. Phosphorescence is based on this principle.
Discrete molecules with a diradical nature are singlet oxygen and triplet oxygen. Other important diradicals are carbenes and nitrenes. Lesser known diradicals are nitrenium ions and organic so-called non-Kekulé molecules in which the electrons reside on different carbon atoms.
Agency Reviews Patent Application Approval Request for "Process for Preparing Polyamides Comprising Fluoroether Functionalized Aromatic Moieties"
Jan 15, 2013; By a News Reporter-Staff News Editor at Life Science Weekly -- E. I. Du Pont De Nemours And Company has been issued patent...
Patent Issued for Shaped Articles Fabricated from Polyamides Comprising Fluoroether Functionalized Aromatic Moieties
Sep 04, 2012; By a News Reporter-Staff News Editor at Life Science Weekly -- A patent by the inventors Drysdale, Neville Everton (Newark, DE);...