Question

Write the formulas of the following coordination compounds: (i) Tetracarbonyl nickel (0)
(ii) Dichlorobis(ethan-1, 2-diamine) cobalt(III) chloride
(iii) Pentamine carbonato cobalt(III) chloride
(iv) Tetramine aquachloro cobalt(III) chloride

Hint:

When writing formulas of coordination compounds, remember that ligands are named before the metal, and oxidation states are indicated in Roman numerals.

Answer 1

(i) Tetracarbonyl nickel (0): The formula is \([Ni(CO)_4]\).
(ii) Dichlorobis(ethan-1, 2-diamine) cobalt(III) chloride: The formula is \([Co(C_2H_8N_2)_2Cl_2]Cl\).
(iii) Pentamine carbonato cobalt(III) chloride: The formula is \([Co(NH_3)_5CO_3]Cl\).
(iv) Tetramine aquachloro cobalt(III) chloride: The formula is \([Co(NH_3)_4Cl(H_2O)]Cl_2\).