Tuning the coordination chemistry of cyclotriveratrylene ligand pairs through alkyl chain aggregation

Abstract

Propylated cyclotriveratrylene (CTV) ligands display different coordination chemistry over their methylated congeners as a result of increased solubility, an affinity for alkyl chain aggregation and steric factors.

Controlling the assembly of cyclotriveratrylene-derived coordination cages

“…Whilst this is testament to their hosting ability, it demonstrates just how easily their self-assembly can be perturbed and how challenging their self-assembly can be to predict. Similar offset M 2 L 2 assemblies of derivatised CTVs have been observed in both coordination 34 and organometallic 35 complexes, alongside purely covalent species. 36 The second noteworthy complex of M 2 L 2 stoichiometry is the dimeric [Ag 2 (2) 2 (MeCN) 2 ] 2+ capsule (where 2 = (AE)-tris-(3-pyridylmethylamino)cyclotriguaiacylene), which is formed from the self-assembly of ligand 2 and silver(I) hexafluorophosphate (PF 6 À ) in acetonitrile (MeCN) solvent, Fig.…”

Studies of Multicenter and Intermolecular Dihydrogen B–H···H–C Bonding in [4,8,8′‐exo‐{PPh3Cu}‐4,8,8′‐(μ‐H)3‐commo‐3,3′‐Co(1,2‐C2B9H9)(1′,2′‐C2B9H10)]

“…Thus, in [Ag(glu)(Cobdc)] {glu = glutaronitrile, NC(CH 2 ) 3 CN} [40] only atoms of the upper belt of the {nido-C 2 B 9 H 11 } ligands most distant from the cage carbon atoms, due to their most hydridic character, are involved in the B-H···Ag bonding interaction. [Ag(C 6 H 6 )-(MeC 6 H 4 Me)(Cobdc)], [41] [Ag(MeC 6 H 4 Me)(Cobdc)], [41] [Ag(adi)(Cobdc)], [40] [Ag(pim)(Cobdc)][Ag(Cobdc)], [42] [Ag 3 (sub) 2 (Cobdc) 3 ], [42] and [Ag(L1p)(Cobdc)] [43] [23] This, in fact, indicates the predominantly electrostatic nature of M···Cobdc bonding. The same was concluded from the 1 H and 11 B NMR spectra of 1, which manifest stereochemical non-rigidity caused by the fast moving of the Cu-containing group between the B8, B4Ј, and B8Ј atoms of the carborane cage ligands.…”

Coordination polymers with embedded recognition sites: lessons from cyclotriveratrylene-type ligands

“…Pillararenes, crown ethers, cucurbiturils and cyclodextrins have also been employed. Our own work, [9][10][11][12][13][14][15][16][17][18][19][20][21] alongside that of other research groups, [22][23][24][25][26] has investigated the use of functionalised cyclotriveratrylenes (CTVs) as bridging ligands for coordination polymers. Cyclotriveratrylene (CTV) is a bowl-shaped molecular host with a tribenzo [a,d,g] cyclononatriene core.…”