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  2. Coordinate covalent bond - Wikipedia

    en.wikipedia.org/wiki/Coordinate_covalent_bond

    In coordination chemistry, a coordinate covalent bond, [1] also known as a dative bond, [2] dipolar bond, [1] or coordinate bond [3] is a kind of two-center, two-electron covalent bond in which the two electrons derive from the same atom. The bonding of metal ions to ligands involves this kind of interaction. [4]

  3. Nitrogen - Wikipedia

    en.wikipedia.org/wiki/Nitrogen

    Nitrogen is a chemical element; ... Nitrite is also a common ligand that can coordinate in five ways. The most common are nitro (bonded from the nitrogen) and nitrito ...

  4. Coordination complex - Wikipedia

    en.wikipedia.org/wiki/Coordination_complex

    Cisplatin, PtCl 2 (NH 3) 2, is a coordination complex of platinum(II) with two chloride and two ammonia ligands.It is one of the most successful anticancer drugs. A coordination complex is a chemical compound consisting of a central atom or ion, which is usually metallic and is called the coordination centre, and a surrounding array of bound molecules or ions, that are in turn known as ligands ...

  5. Geometry index - Wikipedia

    en.wikipedia.org/wiki/Geometry_index

    4-coordinate compounds [ edit ] In 2007 Houser et al. developed the analogous τ 4 parameter to distinguish whether the geometry of the coordination center is square planar or tetrahedral. [ 2 ]

  6. Transition metal nitrate complex - Wikipedia

    en.wikipedia.org/wiki/Transition_metal_nitrate...

    Being the conjugate base of a strong acid (nitric acid, pK a = -1.4), nitrate has modest Lewis basicity.Two coordination modes are common: unidentate and bidentate.Often, bidentate nitrate, denoted κ 2-NO 3, is bound unsymmetrically in the sense that one M-O distance is clearly bonding and the other is more weakly interacting. [2]

  7. Ligand field theory - Wikipedia

    en.wikipedia.org/wiki/Ligand_field_theory

    The LFT analysis is highly dependent on the geometry of the complex, but most explanations begin by describing octahedral complexes, where six ligands coordinate with the metal. Other complexes can be described with reference to crystal field theory . [ 5 ]

  8. Coordination number - Wikipedia

    en.wikipedia.org/wiki/Coordination_number

    Co(NH 3) 6] 3+, which features 6-coordinate metal centre with octahedral molecular geometry. Chloro(triphenylphosphine)gold(I) , which features 2-coordinate metal centre. In chemistry, coordination number , defined originally in 1893 by Alfred Werner , is the total number of neighbors of a central atom in a molecule or ion.

  9. Solid nitrogen - Wikipedia

    en.wikipedia.org/wiki/Solid_nitrogen

    Solid nitrogen is a number of solid forms of the element ... (Φ) = sec(θ) − 1. The coordinate of one atom in the unit cell at x,x,x also determines the bond ...