Question

Name the following complexes (Coordination Chemistry):

PtCl₄^2-,

Hg(CN)₄^2-,

Ni(NH₃)₆²⁺,

Fe(PO₄)₂^3-,

Co(NH₃)₅(H₂O)³⁺,

CaHCO³⁺

Answer 1

Answer:

Rules:

• The positive whther simple or complex, is named first followed by the negative ion (anion).
• The name starts with small letter and the complex part is written as one word.
• ligands are named first, in alphabetical order, then the metal atom or ion.
• If there are several ligands of the same type, the prefixes like di, tri, tetra etc are used to indicate the number of ligands of that type.
• If the complex ion is a cation or the cordination compound is non-ionic, the name of the central metal ion is written as such followed by its oxidation state indicated by Roman numeral in the parenthesis.
• If the charge is negative, the suffix -ate is added to the name of the coordination sphere.

1). [PtCl₄]^2-

tetrachloroplatinate(I I)

2). [Hg(CN)₄]^2-

tetracyanomercurate(II)

3). [Ni(NH3)₆]²⁺,

hexaamminenickel(II)

4). [Fe(PO₄)₂]^3-

phosphatoiron(III)

5). [Co(NH3)₅(H2O)]³⁺

pentaammineaquacobolt(III)

6). [CaHCO]³⁺

carbonylhydridocalcium(IV)