Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configuration and coordination number. Also give stereochemistry and magnetic moment of the complex: (i) K[Cr(H₂O]₂(C₂O₄)₂]3H₂O (iii) [CrCl₃(pY)₃] (v) K₄[Mn(CN)₆] (ii) [Co(NH₃)₅Cl]Cl₂ (iv) Cs[FeCl₄]
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(i) K[Cr(H₂O]₂(C₂O₄)₂]3H₂O
Potassium Diaquadioxalatochromate (III) Trihydrate
Oxidation state of Chromium = 3
Electronic configuration: 3d3 : t2g3
Coordination number = 6
Shape: octahedral
(ii) [Co(NH3)5Cl]Cl2
IUPAC name: Pentaamminechloridocobalt(III) chloride
Oxidation state of Co = +3
Coordination number = 6
Shape: octahedral.
Electronic configuration: d6: t2g6.
(iii) CrCl3(py)3
IUPAC name: Trichloridotripyridinechromium (III)
Oxidation state of chromium = +3
Electronic configuration for d3 = t2g3
Coordination number = 6
Shape: octahedral.
(iv) Cs[FeCl4]
IUPAC name: Caesium tetrachloroferrate (III)
Oxidation state of Fe = +3
Electronic configuration of d6 = eg2t2g3
Coordination number = 4
Shape: tetrahedral
Stereochemistry: optically inactive
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