Coordination Chemistry Flashcards
Dative Bonding
Donation of lone electron pair in a molecular bond to a metal ion and resulting attraction
Ligand
Atom that forms a direct dative bond with metal ion
Covalent Bond Structure Name
Molecules
Ionic Bond Structure Name
Compound
Dative Bond Structure Names
coordination compound (neutral, can be a single neutral molecule or a single charged molecule (complex ion) and it’s counter ions) or coordination complex ion (charged)
Coordinate Chemistry Def.
Study of activity between transition ions and other molecules/ions
Lewis Acid Def.
Species that accepts an electron pair. Matal Ion. Becomes more negatively charged
Lewis Base Def.
Species that donates a pair of electrons. Ligand. Becomes more positively charged
Bronsted-Lowrey Acid
Proton Donor
Bronsted-Lowrey Base
Proton Acceptor
Arrhenius Acid Def.
Substance that ionizes to produce H+ in an aqueous solution
Arrhenious Base
Substance that ionizes to produce OH- in aqueous solution
Coordination number
No. of donor atoms in complex
Ligand Denticity Def.
No. of donor atoms in a dative bond. Way of classifying ligands eg monodentate
Why might an atom have 2 lone pairs but still be monodentate
2nd lone pair may not bind to metal ions as to bind to it needs to face same direction
Example of monodentate ligands
F-, OH-, H2O and H2O
Examples of bidentate ligands
Oxalate ion (C2O4-), ethylene diamine
Oxidation State of Metal Ions
Charge of overall molecule - charge of bases
Shape at coordination number 2
linear
Shape at coordination number 4
tetrahedral or square planar (when 3d8)
Shape at coordination number 6
octahedral
Cisplatin Structure
Square Planar (flat), lewis acid (platinum) and 4 leis bases (2 NH3 and 2 Cl)
Examples of bidendate
oxalate
