9. Ligands and their Complexes Flashcards
What is Argentate?
the Latin name for silver
What is Aurate?
the Latin name for gold
What does bidentate mean?
describes ligands with two donor atoms that can be simultaneously attached to the same metal ion
What is a chelate ring?
the ring formed when a polydentate ligand coordinates to a transition metal ion
What is Cuprate?
the Latin name for copper
What is Ferrate?
the Latin name for iron
What is a formation constant?
an equilibrium constantfor theformationof a complex in solution. It is a measure of the strength of the interaction between the reagents that come together to form the complex
What is a Lewis base?
an electron pair donor
What is a ligand?
a molecule or an anion that can coordinate to a transition metal ion to form a complex
What is a macrocycle?
a cyclic macromolecule or a macromolecular cyclic portion of a molecule
What does monodentate mean?
describes a ligand that can coordinate to a metal ion using only one donor atom
What is nuclearity?
Thenuclearityof a single coordination entity indicates the number of central atoms joined by bridging ligands or metal-metal bonds
What does Plumbate mean?
the Latin name for lead
What does Stannate mean?
the Latin name for tin
What is a bridging ligand?
aligandthat connects two or more atoms, usually metal ions
What are chelate complexes?
a complex ion containing one or more chelate rings
What is the chelate effect?
the larger value of the cummulative formation constant (βn) found for complexes containing chelate rings when compared with analogous complexes containing monodentate ligands
What is a coordinate bond?
a covalent bond between a Lewis acidic metal ion and a Lewis basic ligand in which both electrons originate from the ligand
What is a dative bond?
A coordinate bond
What is a donor atom?
an atom of a ligand in a complex that is directly coordinated to the transition metal ion
What is a donor covalent bond?
A coordinate bond
What are organometallic compounds?
a compound containing a carbon-metal bond
What does polydentate mean?
describes a ligand containing two or more atoms that can coordinate simultaneously to a metal ion
True or False: chelate rings are thermodynamically very stable
True
Are cations or anions written first when naming coordination compounds?
Cations
How do you name a ligand that has two potential donor atoms?
The Greek letter kappa, K, is used
i.e. Thiocyanato-kS (coordinated through sulfur)
How do you name a negatively charged complex?
The suffix ‘-ate’ is added to the metal
