Q79 · CSIR NET Chemistry, December 2019
Paper: CSIR NET December 2019 · Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Elements – General · Marks: 2 · Difficulty: Easy
The common heptacity observed for coordination of $\mathrm{C_{60}}$ to a metal center is
(a)2
(b)4
(c)5
(d)6
Answer
Answer: A ✓ checked by 4AB · confidence high
The source book printed no answer; this one was worked out and checked — see the explanation.
Explanation
C₆₀ almost always binds metals η² through one 6,6 ring-junction C=C bond (it behaves like an electron-poor alkene), e.g. (η²-C₆₀)Pt(PPh₃)₂.
Study loop for Main Group Elements