Nucleophilic addition to aldehydes or ketones results in an (*) intermediate with this geometry.
The nickel carbonyl intermediate in the Mond process has this geometry. In compounds with this geometry, the t-sub-2g orbitals split higher than the e-sub-g ones, and the value of that energy splitting is four-ninths that of a related geometry. Complexes with this geometry are always high spin. Nucleophilic addition to aldehydes or ketones results in an (*) intermediate with this geometry. Central atoms with the same coordination number as this geometry, but which also have lone pairs, can form square planar complexes. SN2 reactions happen most quickly on carbons with this geometry. All bond angles in this geometry are 109.5 degrees. The phosphate anion and ammonium cation have this geometry, as do sp3-hybridized carbons like that in methane. For 10 points, name this geometry, a platonic solid with four vertices.
The nickel carbonyl intermediate in the Mond process has this geometry.
tetrahedral [accept word forms; prompt on sp3 until it is read] &lt;JL, Chem&gt;