A novel Borromean (6,3) net assembled by nest-shaped clusters as knots

Construction of cluster-based supramolecular wire and rectangle

“…44,45 Some groups in the world have also been involved in constructing Mo(W)/Cu/S cluster-supported supramolecular compounds by assembling Mo(W)/Cu/S cluster precursors with N donor ligands like CN − , 4,4′-bipyridne (4,4′-bipy), 1,2-bis(4-pyridyl)ethane (bpea). 29,45–55 Most of them are cluster-based multi-dimensional coordination polymers like [Tp*WS 3 Cu 3 (μ 3 -DMF)(CN) 3 Cu(Py)] (py = pyridine), 56 [Tp*WS 3 Cu 2 (CN)(μ 4 -bpea) 0.5 ] 2 , 57 and {[Tp*WS 3 Cu 3 (4,4′-bipy) 3 (μ 3 -Br)](PF 6 )·H 2 O} n , 29 However, only a few discrete Mo(W)/Cu/S cluster-based supramolecular compounds have been isolated so far. For example, a novel synthetic strategy based on the synergistic effect of coordination and covalent interactions was proposed, and the discrete cationic distorted octahedral cage [Tp*WS 3 Cu 2 (L a )] 6 (OTf) 6 (OTf = trifluoromethanesulfonate; L a = 1,4-bis(pyridine-4-ylethynyl)benzene) was isolated.…”

Guest inclusion by Borromean weave coordination networks

“…The Borromean motif is an example of a prime link, formally 6 3 2 in Alexander-Briggs notation [1,2]. Borromean topologies in chemistry are rare but have been experimentally realized for DNA nanostructures [3], discrete metallosupramolecular assemblies [4,5], 2-D coordination polymer sheets [6][7][8][9][10][11][12], and hydrogen-and halogen-bonded structures [5,[13][14][15]. Mutually entangled topologies in chemical systems are of considerable interest because of changes in properties such as mechanical robustness, framework cooperativity, and dynamical non-trivial behavior that can arise from mechanical bonding.…”

A “Compartmental” Borromean Weave Coordination Polymer Exhibiting Saturated Hydrogen Bonding to Anions and Water Cluster Inclusion

“…Hydrogen-bonding distances: 2.960(6)-2.944(6) . The ligands are color coded to show that each belongs to a different independent network within the Borromean structure.…”

“…Historically, Borromean rings have been used extensively to represent unity. There have been several recent reports of Borromean coordination polymers, [1][2][3][4][5][6][7] with previously unrecognised examples being correctly classified by Carlucci et al [1] while Stoddart and coworkers have synthesized a discrete Borromeate complex. [8,9] Much of the interest in coordination polymer chemistry stems from the creation of robust porous frameworks capable of containing guest molecules.…”

“…The ligands are color coded to show that each belongs to a different independent network within the Borromean structure. Hydrogen-bonding distances: 2.960(6)-2.944(6) .…”