Chapter 25 concepts to master definitions
Terms
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- coordination number
- number of points around the metal center at which bonds to ligands can form
- ligand
- ability to donate e- pairs to central metal atoms/ions
- monodentate
- ligand that uses one pair of e- to form one poitn of attachment to the central metal atom/ion
- bidentate
- ligand taht attaches to the metal center at two points
- polydentate
- ligand capable of donating more than a singe e- pair from different atoms in the ligand and to different sies in the geometric structure of a complex ion.
- chelate
- when the bonding of a polydentate ligand to a metal ion produces a ring
- strong field ligand
-
delta > P
low spin
large crystal field splitting - weak field ligand
-
delta < P
high spind
small crystal field splitting - spectrochemical series
- arrangement of ligands' abilities to produce a splitting of the d energy levels
- pairing energy
- the energy required to force an electron into an orbital that is already occupied by one electron
- paramagnetism
- substance has one or more unpaired electrons in it's atoms or molecuels. it is attracted to a magnetic field
- diamagnetism
- substance has all its e= paired and is slightly repelled by a magnetic field.
- hydrate
- a compound in which a fixed number of water molecuels is associated with each formula unit
- azides
- salts of NH3 (weak acid)