Bis(benzo[h]quinolin-10-olato-κ2 N,O)bromidomanganese(III).

Veronica Papa,Anke Spannenberg,Kathrin Junge,Matthias Beller

doi:10.1107/s2414314620015709

Abstract

The title compound, [MnBr(C13H8NO)2], consists of a manganese(III) atom, which is coordinated by one bromido and two benzo[h]quinolin-10-olato ligands. The MnIII complex exhibits a distorted square-pyramidal coordination geometry with the Br ligand in the apical position. Neighbouring complexes are held together by π-π inter-actions and weak C-H⋯Br hydrogen bonds.

Highlights

The title compound, [MnBr(C13H8NO)2], consists of a manganese(III) atom, which is coordinated by one bromido and two benzo[h]quinolin-10-olato ligands
We described the chemoselective reduction of quinolines and related N-heterocycles by molecular hydrogen, using a simple MnI complex [Mn(CO)5Br] (Papa et al, 2020)
The molecular structure consists of a manganese(III) atom coordinated by one bromido and two bidentate benzo[h]quinolin-10-olato ligands (Fig. 1)

Summary

Structure description

We described the chemoselective reduction of quinolines and related N-heterocycles by molecular hydrogen, using a simple MnI complex [Mn(CO)5Br] (Papa et al, 2020). During the mechanistic studies of this catalytic reaction, several manganese compounds starting from [Mn(CO)5Br] and different N-heteroarenes were prepared and characterized by spectroscopic methods In this context, the title compound was synthesized and structurally determined by single-crystal X-ray diffraction. The molecular structure consists of a manganese(III) atom coordinated by one bromido and two bidentate benzo[h]quinolin-10-olato ligands (Fig. 1). In the crystal structure, – stacking interactions along the crystallographic b axis are observed between N1/C1–C4/C13 and between the C7–C12 rings, respectively (Fig. 2), with centroid-to-centroid distances Cg(N1/C1–C4/C13)Á Á ÁCgi(N1/C1–C4/C13) = 3.6804 (14) A [symmetry code: (i) 1 À x, 2 À y, 1 À z], ring slippage = 1.42 A , and Cg(C7– C12)Á Á ÁCgii(C7–C12) = 3.6194 (16) A [symmetry code: (ii) = 2 À x, 1 À y, 1 À z], ring slippage 1.33 A. The crystal structure of a dimeric indium complex containing two benzo[h]quinolin-10-olato units has been

DÁ Á ÁA

Data collection Diffractometer Absorption correction

Synthesis and crystallization

Bruker APEXII CCD diffractometer

Special details