Two atoms are held together in four covalent bonds because of forces between the what?

1 Answer
anor277
Jun 17, 2017

There are few examples of a quadruple bond.........

Explanation:

The classic example is #"chromous acetate"#, i.e. #[Cr_2{μ_2-"O(O=)CCH"_3}_4*2OH_2]#, is one well characterized metal complex, whose exceptionally short #"metal-metal"# distance of #2.36xx10^-10*m# may be rationalized on the basis of a #Cr-Cr# #sigma"-bond"#, #2xxCr-Cr# #pi-"bonds"#, and #1xxCr-Cr# #delta"-bond"#.

In each case the bond represents a region of electron density between the metal-metal vector, or above the plane of the metal-metal vector, so that internuclear repulsion between the #Cr^(2+)# centres is minimized, and a NET attractive force results between the metal nuclei and the orbital clouds of the electron.

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