Title

Diradical Anion of Potassium Aggregate: Reduction of Dimer Boroxide Complex

RIS ID

131471

Publication Details

Zheng, Y., Wang, X., Bai, Y., Wang, X., Ru, C., Chen, W., Lv, X., Pan, X. & Wu, J. (2018). Diradical Anion of Potassium Aggregate: Reduction of Dimer Boroxide Complex. Inorganic Chemistry, 57 (21), 13544-13551.

Abstract

Crystalline aggregates containing metal cation clusters "wrapped" by reduced hydrocarbon anions have been presented. Initially, a dimeric complex (2) possessing a bimetallic K2O2 core was synthesized from the reaction between an anthracene substituted boronic acid (2-(anthracen-9-yl)phenyl)(hydroxy)(mesityl)borane (1-H) and KN(SiMe3)2 in THF solution. The B-O bond length (1.281(4) Å) in complex 2 is comparable to those observed in oxoboranes, indicating this may be a double bond, which is supported by its Wiberg bond order (1.9) predicted by density functional theory calculations. Subsequently, potassium aggregate complexes, diradical 3 and dihydro anion 4, were obtained through the reduction reactions of dimeric complex 2 and 1-H, respectively. They exhibit similar K3O2B2 aggregate structures, but differ significantly in the geometry of the anthracene units. Complex 3 features a triplet diradical character with planar anthracene units that carry the unpaired electrons, while the anthracene groups in complex 4 display a puckered structure due to the addition of hydrogen atoms.

This record is in the process of being updated. Please contact us for more information.

Share

COinS
 

Link to publisher version (DOI)

http://dx.doi.org/10.1021/acs.inorgchem.8b02157