Consider the following statements with respect to Jacobsen’s catalyst used for epoxidation reaction. It is/has

A. manganese(III) complex
B. salen type ligand
C. cobalt(III) bromide complex
D. 1-nitroso-2-naphthol type ligand
E. square pyramid geometry
F. square planar geometry

Choose the correct answer from the options given below:

Correct option is B

​Jacobsen's catalyst is the common name for N,N'-bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexane­diaminomanganese(III) chloride, a coordination compound of manganese and a salen-type ligand. It is used as an asymmetric catalyst in the Jacobsen epoxidation, which is renowned for its ability to enantioselectively transform prochiral alkenes into epoxides. 

Jacobsen's catalyst consists of a salen ligand, tetradentate, meaning it binds to the central manganese metal through four bonds, one to each oxygen and nitrogen atom of the salen backbone. Its chirality is conferred from the diamine-derived backbone. The aryl groups are decorated with tert-butyl substituents, which amplify the asymmetry around the Mn center.

In geometry, a square pyramid is a pyramid with a square base and four triangles, having a total of five faces. If the apex of the pyramid is directly above the center of the square, it is a right square pyramid with four isosceles triangles; otherwise, it is an oblique square pyramid.