Binary compounds of these groups form binary acids when mixed with water. For 10 points each:
[10m] Name this group of polyatomic anions named for sharing properties with the typical leaving groups in cross-coupling reactions. Classic examples of these groups are cyanide and isocyanide.
ANSWER: pseudohalides [or pseudohalogens; reject “halogens” or “halides”]
[10h] All pseudohalides share the symbol X with the halides, but this simplest alkyl sulfonate gets its own pseudoelement symbol. Perfluorinating this group yields triflate.
ANSWER: mesyl [or Ms; accept mesylates]
[10e] Pseudo-rotations typically swap axial and equatorial atoms on molecules with this geometry, like phosphorus pentacyanide.
ANSWER: trigonal bipyramidal
<Chemistry>