Synthesis and crystal structure of a supramolecular adduct of the aqua nitrato complex of gadolinium [Gd(NO3)(H2O)7]2+ with macrocyclic cavitand cucurbit[6]uril

Synthesis, crystal structures, and properties of [Ca(H2O)2(Dmf@CB[6])(Bdc)] · DMF · 4H2O and [Ca(H2O)3(Dmf@CB[6])]Cl2 · 2H2O

“…The distance from the metal atom to the plane of the portal in compound II is 0.53 Å, and that in compound I is 1.04 Å. Similar changes were observed in the mononuclear complexes of lan thanides with CB [6] [23][24][25]. The position of the DMF molecule inside CB [6] differs: in compound I two CH 3 groups are directed to the portal, whereas in compound II one group is directed to the portal and the second CH 3 group is located at the center of the CB [6] cavity.…”

“…Similar distortions of the CB [6] molecule are observed for the Sm 3+ (Δ CH = 0.71 Å) and Gd 3+ (Δ CH = 0.68 Å) complexes, and a pyridine molecule was included in the CB [6] cavity of the latter [24][25][26].…”

One-Dimensional Coordination Polymers of Lanthanide Cations to Cucurbit[7]uril Built Using a Range of Tetrachloride Transition-Metal Dianion Structure Inducers

“…Cucurbit[n]urils(Q[n]s) [9][10][11][12][13][14] consist of a rigid hydrophobic cavity of low polarity, accessible through two open polar portals rimmed with carbonyl groups, which can interact with various metal ions [15][16][17][18][19][20][21][22][23][24][25][26], or their complexes [27][28][29][30][31][32][33][34][35][36][37][38][39][40] or clusters [41][42][43][44][45][46][47][48][49][50] [53]. In recent years, there has been a trend towards introducing an organic or inorganic species into the metal-Q[n] systems as a "structure inducer" or trigger, since the properties, structural novelties, and functionalities of the resulting coordination polymers have often exceeded those observed in the absence of such agents.…”

Structure and thermodynamic properties of adducts based on cucurbit[6]uril and Fe(III)/Fe(II) aqua complexes: A DFT examination

“…Syntheses and study of the adducts formed as a result of reactions between CB[n] and various organic and inorganic particles have been carried out by several groups, notably by that of Fedin [14][15][16][17][18][19][20][21][22]. This research resulted in the discovery of unique possibilities for the use of CB [n] in various fields.…”