Question

$\pi$-bonding is not present in :

• A. Grignard reagent
• B. Dibenzene chromium
• C. Zeise salt
• D. Ferrocene

Answer 1

Answer: (A)

Grignard reagent

Girgnard reagent is $RMgX$ an organometallic chemical of alkyl, vinyl, or aryl-magnesium halides.

Dibenzene chromium is the prototypical complex containing two arene ligands. Forms a sandwich structure with $\pi$ bonding.

Zeise's salt, potassium trichloro(ethene)platinate(II), is the chemical compound with the formula$\left[PtC{l}_3\right(C_2{H}_4\left)\right]\cdot H_{2}O.$ The coordination compound contains an η2-ethylene ligand an transition metal alkene complex.

Ferrocene is an organometallic compound with the formula $Fe(C_5{H}_5{)}_2$.