Question

Write down the IUPAC name of the following complex and indicate the oxidation state, electronic configuration and coordination number. Also, give the stereochemistry and magnetic moment of the complex:

[CrCl₃(py)₃]

Answer 1

IUPAC name of the hybrid compound	Oxidation state of the central metal	Coordination number	Shape	Central metal ion	Electronic configuration	The value of n and the magnetic moment
Trichloridotripyridinechromium (III)	x + 5 × (0) + 3 × (−1) = 0 ∴ x = +3	6	Octahedral	Cr3+	d3, \[\ce{t^3_{2g}}\]	`sqrt(3(3 + 2))` = `sqrt15` = 3.87 BM

Stereochemistry:

Both isomers are optically active. Therefore, a total of 4 isomers exist.