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  2. Lewis structure - Wikipedia

    en.wikipedia.org/wiki/Lewis_structure

    Lewis structure of a water molecule. Lewis structures – also called Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDs) – are diagrams that show the bonding between atoms of a molecule, as well as the lone pairs of electrons that may exist in the molecule.

  3. Pentazenium - Wikipedia

    en.wikipedia.org/wiki/Pentazenium

    According to both ab initio calculations and the experimental X-ray structure, the cation is planar, symmetric, and approximately V-shaped, with bond angles 111° at the central atom (angle N2–N3–N4) and 168° at the second and fourth atoms (angles N1–N2–N3 and N3–N4–N5). The bond lengths for N1–N2 and N4–N5 are 1.10 Å and the ...

  4. Transition metal dinitrogen complex - Wikipedia

    en.wikipedia.org/wiki/Transition_metal_di...

    Transition metal complexes of N 2 have been studied since 1965 when the first complex was reported by Allen and Senoff. [3] This diamagnetic complex, [Ru(NH 3) 5 (N 2)] 2+, was synthesized from hydrazine hydrate and ruthenium trichloride and consists of a [Ru(NH 3) 5] 2+ centre attached to one end of N 2.

  5. Nitro compound - Wikipedia

    en.wikipedia.org/wiki/Nitro_compound

    The structure of an organic nitro compound. In organic chemistry, nitro compounds are organic compounds that contain one or more nitro functional groups (−NO 2). The nitro group is one of the most common explosophores (functional group that makes a compound explosive) used globally. The nitro group is also strongly electron-withdrawing.

  6. Transition metal nitrite complex - Wikipedia

    en.wikipedia.org/wiki/Transition_metal_nitrite...

    Addition of donor ligands to this complex induces the conversion to the octahedral low-spin isomer, which now is a soft Lewis acid. The nitrite isomerizes to the N-bonded isomer, Fe(porph)NO 2 (L). [5] The isomerization of [(NH 3) 5 Co−ONO] 2+ to [(NH 3) 5 Co−NO 2] 2+ proceeds in an intramolecular manner. [6]

  7. VSEPR theory - Wikipedia

    en.wikipedia.org/wiki/VSEPR_theory

    The number of electron pairs in the valence shell of a central atom is determined after drawing the Lewis structure of the molecule, and expanding it to show all bonding groups and lone pairs of electrons. [1]: 410–417 In VSEPR theory, a double bond or triple bond is treated as a single bonding group. [1]

  8. Nickel(II) nitrite - Wikipedia

    en.wikipedia.org/wiki/Nickel(II)_nitrite

    Nickel(II) nitrite is an inorganic compound with the chemical formula Ni(NO 2) 2. [1] Anhydrous nickel nitrite was first discovered in 1961 by Cyril Clifford Addison, who allowed gaseous nickel tetracarbonyl to react with dinitrogen tetroxide, yielding a green smoke.

  9. Radical (chemistry) - Wikipedia

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

    The hydroxyl radical, Lewis structure shown, contains one unpaired electron. Lewis dot structure of a Hydroxide ion compared to a hydroxyl radical. In chemistry, a radical, also known as a free radical, is an atom, molecule, or ion that has at least one unpaired valence electron.