Design of Novel Hexametallic Cartwheel Molecules from Persubstituted Benzene Compounds

Abstract

The cartwheel complexes A are novel, nano-sized hexametallic species available from persubstituted benzenes C(6)[3,5-(CH(2)Y)(2)C(6)H(3)] (Y=NMe(2), P(O)Ph(2), PPh(2), SPh). The molecular structure of A (Y=SPh, ML(n)=PdCl) shows C(3) symmetry with adjacent radial Pd-Pd separations of 7.339(2) and 8.006(2) Å and a diametrically opposed Pd-Pd separation of 15.340(2) Å. Because of their size hexametallic species such as A are potential homogeneous catalysts in organic reactions which can be recovered by nanomembrane filtration techniques.

Cyclometalation Using d-Block Transition Metals: Fundamental Aspects and Recent Trends

“…116,117 Again, polydentate donor bonding to the metal precursor may restrict the formation of the coordinatively unsaturated metal precursor and hence impede C-H bond activation.…”

Ring closing metathesis employing organometallic substrates and the templated synthesis of macrocycles

“…Dendritic supports offer many advantages in this area but, due to their flexible nature, are not retained by nanofiltration membranes to the same extent as rigid molecules of similar (or lesser) molecular weight. In part to address this, a number of rigid, shape persistent pincer containing "cartwheel" type complexes [57][58][59][60] were synthesized in which the pincer groups surround an arene core, Fig. 5.…”

Structure–Property Relationships and 1O2 Photosensitisation in Sterically Encumbered Diimine PtII Acetylide Complexes

“…Numerous polyarylated organometallic compounds have been prepared, including some with bulky substituents that exhibit correlated rotation,7 and HPB Pd II pincer complexes that behave as homogeneous Lewis acid catalysts 8. The HPBs are interesting synthetic precursors for graphene‐like hexa‐ peri‐ hexabenzocoronene (HBC) platforms,9 and π‐conjugated transition metal compounds have been extensively investigated as triplet emitters in optoelectronic devices 10.…”