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  2. Molecular orbital diagram - Wikipedia

    en.wikipedia.org/wiki/Molecular_orbital_diagram

    Molecular orbital diagram of dioxygen. Oxygen has a similar setup to H 2, but now we consider 2s and 2p orbitals. When creating the molecular orbitals from the p orbitals, the three atomic orbitals split into three molecular orbitals, a singly degenerate σ and a doubly degenerate π orbital.

  3. Singlet oxygen - Wikipedia

    en.wikipedia.org/wiki/Singlet_oxygen

    [2] [3] The ground and first two singlet excited states of oxygen can be described by the simple scheme in the figure below. [7] [8] Molecular orbital diagram of two singlet excited states as well as the triplet ground state of molecular dioxygen. From left to right, the diagrams are for: 1 Δ g singlet oxygen (first excited state), 1 Σ +

  4. Multiplicity (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Multiplicity_(chemistry)

    Molecular orbital diagram of two singlet excited states and triplet ground state of O 2. From left to right, the diagrams are for: 1 Δ g singlet oxygen (first excited state), 1 Σ + g singlet oxygen (second excited state), and 3 Σ − g triplet oxygen (ground state).

  5. Molecular orbital theory - Wikipedia

    en.wikipedia.org/wiki/Molecular_orbital_theory

    Molecular orbital diagram of He 2 Bond order is the number of chemical bonds between a pair of atoms. The bond order of a molecule can be calculated by subtracting the number of electrons in anti-bonding orbitals from the number of bonding orbitals, and the resulting number is then divided by two.

  6. Molecular orbital - Wikipedia

    en.wikipedia.org/wiki/Molecular_orbital

    A MO with δ symmetry results from the interaction of two atomic d xy or d x 2-y 2 orbitals. Because these molecular orbitals involve low-energy d atomic orbitals, they are seen in transition-metal complexes. A δ bonding orbital has two nodal planes containing the internuclear axis, and a δ* antibonding orbital also has a third nodal plane ...

  7. Superoxide - Wikipedia

    en.wikipedia.org/wiki/Superoxide

    The reactive oxygen ion superoxide is particularly important as the product of the one-electron reduction of dioxygen O 2, which occurs widely in nature. [2] Molecular oxygen (dioxygen) is a diradical containing two unpaired electrons, and superoxide results from the addition of an electron which fills one of the two degenerate molecular ...

  8. Photooxygenation - Wikipedia

    en.wikipedia.org/wiki/Photooxygenation

    In classical Lewis structures, molecular oxygen, O 2, is depicted as having a double bond between the two oxygen atoms. However, the molecular orbitals of O 2 are actually more complex than Lewis structures seem to suggest. The highest occupied molecular orbital (HOMO) of O 2 is a pair of degenerate antibonding π orbitals, π 2px * and π 2py ...

  9. Oxygen - Wikipedia

    en.wikipedia.org/wiki/Oxygen

    Orbital diagram, after Barrett (2002), [33] showing the participating atomic orbitals from each oxygen atom, the molecular orbitals that result from their overlap, and the aufbau filling of the orbitals with the 12 electrons, 6 from each O atom, beginning from the lowest-energy orbitals, and resulting in covalent double-bond character from ...