CHEM 211 Study Guide - Final Guide: Aldehyde, Heptane, Ketose

• School: Queen's University
• Department: Chemistry
• Course: CHEM 211
• Professor: Philip G Jessop

Document Summary

Coordination complex an atom or ion and a surrounding array of bound molecules or anions. 4 tetrahedral, disphenoidal (interhalogen compounds eg [brf4]+, 5 trigonal bipyramidal, square-based pyramidal, pentagonal planar. 7 and 8 pentagonal bipyramidal (if7), square antiprismatic [if8]- Symmetry element a geometrical entity such as a line, plane or point about which a symmetry operation can be performed. Symmetry operation an operation performed on an object, which leaves it in a configuration that is indistinguishable from, and superimposable on, the original configuration. Principal axis axis with the largest cn axis. 360/n rotation to produce equivalent config of molecule. N is the order of the axis. Axis of highest order in a molecule is the principal axis: often the z-axis. Plane through which a reflection of all parts of the molecule produces a configuration which is the same as original. Contain principal axis of symmetry: horizontal ( h) Perpendicular to the principal axis of symmetry: dihedral ( d)