a) What are ambidentate ligands? Give an example. b) Write the IUPAC names of the following: i) K$_3$[Fe(C$_2$O$_4$)$_3$] ii) [Pt(NH$_3$)$_6$]Cl$_4$ c) Draw the structure of the cis-isomer of [Co(NH$_3$)$_4$Cl$_2$]$^+$.

(a) Ligands with two different possible donor atoms (bind through either): NO₂⁻ (N/O), SCN⁻ (S/N). (b)(i) Potassium trioxalatoferrate(III); (ii) hexaammineplatinum(IV) chloride. (c) Octahedron with the two Cl on adjacent corners.

CBSE Class 12 · 2006 · All India · Coordination CompoundsShort Answer

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a) What are ambidentate ligands? Give an example.
b) Write the IUPAC names of the following:
i) K

_{3}

[Fe(C

_{2}

_{4}

)

_{3}

] ii) [Pt(NH

_{3}

)

_{6}

]Cl

_{4}

c) Draw the structure of the cis-isomer of [Co(NH

_{3}

)

_{4}

_{2}

]

^{+}

Solution

(a) An ambidentate ligand possesses two different donor atoms but uses only one of them at a time — e.g. NO

_{2}^{-}

(through N or O), SCN

^{-}

(through S or N).
(b)(i) \textbf{Potassium trioxalatoferrate(III)}
(ii) \textbf{Hexaammineplatinum(IV) chloride}
(c) \textit{cis}-[Co(NH

_{3}

)

_{4}

_{2}

]

^{+}

: octahedral Co(III) with the two Cl

^{-}

on adjacent (90°) vertices and the four NH

_{3}

at the other four corners.

CBSE Class 12 Board · 2006 · All India · Subjective

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CBSE Class 12 · 2006 · All India · Coordination CompoundsShort Answer

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