Failure of The Theory
Part of the rationale for describing this as an effect was the fact that, at the time when it was proposed, there were no known compounds of Group 13 elements with the intermediate, +2, oxidation state. This is no longer true since the discovery of complexes of Ga(II) and In(II), such as the halo complexes 2-. These complex ions are stabilized by the formation of a covalent M–M bond. It follows that the instability of simple complexes of ions such as Ga2+ is due to kinetic factors, namely, that the Ga2+, having an unpaired electron, behaves as a free radical and is rapidly destroyed by reaction with another free radical. Drago was right, these compounds are thermodynamically stable by virtue of the formation of a covalent bond between the gallium ions.
Read more about this topic: Inert Pair Effect
Famous quotes containing the words failure and/or theory:
“What we’ve got here is failure to communicate.”
—Donn Pearce, U.S. screenwriter, Frank R. Pierson, and Stuart Rosenberg. Captain (Strother Martin)
“Everything to which we concede existence is a posit from the standpoint of a description of the theory-building process, and simultaneously real from the standpoint of the theory that is being built. Nor let us look down on the standpoint of the theory as make-believe; for we can never do better than occupy the standpoint of some theory or other, the best we can muster at the time.”
—Willard Van Orman Quine (b. 1908)