Structures of the p-xylylenediammonium chloride and calcium hydrogensulfate adducts of the cavitand 'cucurbituril', C36H36N24O12

Freeman, Wade A.

doi:10.1107/s0108768184002354

Cited by 139 publications

(68 citation statements)

References 3 publications

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“…[214,215] Wu and co-workers recently reported a similar Cu(ii) complex of CB [5]. [216] Structures containing CB [6] complexed with a previously unknown tautomer of HP(OH) 2 , [217] Rb + , [218] Sm III , [219,220] Na + , [87] Cs + , [89] K + , [221] Ca 2+ , [222,223] molybdenumselenide and tungstenselenide aqua complexes and related structures, [224][225][226] [W 3 S 4 (H 2 O) 9 ] 4+ and related structures, [227][228][229] [Nb 2 (m-S 2 ) 2 (H 2 O) 8 ] 4+ , [230] [ClPdMo 3 Se 4 (H 2 O) 7 Cl 2 ]…”

Section: Cb[n] As a Ligand In Metal Complexesmentioning

confidence: 97%

The Cucurbit[n]uril Family

et al. 2005

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In 1981, the macrocyclic methylene-bridged glycoluril hexamer (CB[6]) was dubbed "cucurbituril" by Mock and co-workers because of its resemblance to the most prominent member of the cucurbitaceae family of plants--the pumpkin. In the intervening years, the fundamental binding properties of CB[6]-high affinity, highly selective, and constrictive binding interactions--have been delineated by the pioneering work of the research groups of Mock, Kim, and Buschmann, and has led to their applications in waste-water remediation, as artificial enzymes, and as molecular switches. More recently, the cucurbit[n]uril family has grown to include homologues (CB[5]-CB[10]), derivatives, congeners, and analogues whose sizes span and exceed the range available with the alpha-, beta-, and gamma-cyclodextrins. Their shapes, solubility, and chemical functionality may now be tailored by synthetic chemistry to play a central role in molecular recognition, self-assembly, and nanotechnology. This Review focuses on the synthesis, recognition properties, and applications of these unique macrocycles.

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Section: Cb[n] As a Ligand In Metal Complexesmentioning

confidence: 97%

The Cucurbit[n]uril Family

et al. 2005

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“…The cucurbit [6]uril molecule resembles in shape a barrel containing oxygen atoms of carbonyl groups (portals) on the planes of the top and the bottom. [26,27] Because of the presence of polar carbonyl groups, CB [6] can form complexes with oxophilic metals serving as a polydentate ligand and be involved in hydrogen bonding with metal aqua complexes. [28][29][30][31] Previous studies in our group have evidenced the potential of using CB [6] for isolation of polynuclear Zr, Hf, Sr, U, Mo, Al, Ga, and In aqua complexes.…”

Section: Introductionmentioning

confidence: 99%

Tetranuclear Lanthanide Aqua Hydroxo Complexes with Macrocyclic Ligand Cucurbit[6]uril

et al. 2008

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Registro de acceso restringido Este recurso no está disponible en acceso abierto por política de la editorial. No obstante, se puede acceder al texto completo desde la Universitat Jaume I o si el usuario cuenta con suscripción. Registre d'accés restringit Aquest recurs no està disponible en accés obert per política de l'editorial. No obstant això, es pot accedir al text complet des de la Universitat Jaume I o si l'usuari compta amb subscripció. Restricted access item This item isn't open access because of publisher's policy. The full--text version is only available from Jaume I University or if the user has a running suscription to the publisher's contents.

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“…These weak forces can be hydrogen bonding, metal coordination, hydrophobic forces, van der Waals forces, p-p interactions and electrostatic effects. Understanding the non-covalent interactions is crucial to understand many biological processes from cell structure to vision that rely on these forces for structure and function [1][2][3][4][5][6][7][8][9]. This understanding is important and could be of great use to predict hopefully the physical properties and applications of any given crystalline solid compound and therefore, biological systems are often the inspiration for supramolecular research [10][11][12][13][14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Antimicrobial and Cholinesterase Enzymes Inhibitory Activities of Indeno Imidazoles and X-Ray Crystal Structure of 3a,8a-Dihydroxy-1,3-diphenyl-1,3,3a,8a-tetrahydro-indeno[1,2-d]imidazole-2,8-dione

et al. 2012

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Two indeno imidazoles have been synthesized by the reaction of ninhydrin with diphenylurea and diphenylthiourea. The structures have been determined by spectral analysis. The supramolecular behavior of 3a,8a-Dihydroxy-1,3-diphenyl-1,3,3a,8a-tetrahydro-indeno[1,2-d]imidazole-2,8-dione (1) was thoroughly analyzed and reported using X-ray single crystal technique and concepts. The presence of oxygen and nitrogen atoms led to very interesting supramolecular motifs interactions such as nitrogen-oxygen, nitrogennitrogen, oxygen-oxygen, nitrogen-hydrogen, and oxygenhydrogen. 3a,8a-dihydroxy-1,3-diphenyl-2-thioxo-2,3,3a,8a-tetrahydro-1H-indeno[1,2-d]imidazol-8-one 2 showed good antibacterial activity against B. subtilis and P. aeruginosa, while 3a,8a-dihydroxy-1,3-diphenyl-1,3,3a,8a-tetrahydroindeno[1,2-d]imidazole-2,8-dione 1 only showed antibacterial activity against P. aeruginosa. Both of 1 and 2 were inactive against C. albicans. Derivative 2 demonstrated good cholinesterase enzyme activity unlike derivative 1 which has weak inhibitory activity against these enzymes. Furthermore, 2 was found to be a selective butyrylcholinesterase enzyme inhibitor that has potential use for prevention of further neurodegeneration as well for symptomatic treatment of Alzheimer patients.

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Structures of the p-xylylenediammonium chloride and calcium hydrogensulfate adducts of the cavitand 'cucurbituril', C₃₆H₃₆N₂₄O₁₂

Abstract: Structure determinations of two

Cited by 139 publications

References 3 publications

The Cucurbit[n]uril Family

The Cucurbit[n]uril Family

Tetranuclear Lanthanide Aqua Hydroxo Complexes with Macrocyclic Ligand Cucurbit[6]uril

Synthesis, Antimicrobial and Cholinesterase Enzymes Inhibitory Activities of Indeno Imidazoles and X-Ray Crystal Structure of 3a,8a-Dihydroxy-1,3-diphenyl-1,3,3a,8a-tetrahydro-indeno[1,2-d]imidazole-2,8-dione

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