Expanding and quantifying the crystal chemistry of the flexible ligand 15aneN5

Shircliff, Anthony D.; Davilla, Dustin J.; Allbritton, Elisabeth M. A.; Gorbet, Michael Joseph; Jones, Donald G.; Tresp, David S.; Allen, Michael B.; Shrestha, Alina; Burgess, Gwendolyn E.; Eze, John I.; Fernandez, Andrea T.; Ramirez, Daniel; Shoff, Kody J.; Crispin, Garet G.; Crone, Sarah B.; Flinn, Michael; Tran, Tien; Bryce, Darby S.; Bond, Abbagale L.; Shockey, Dylan W.; Oliver, Allen Grayson; Krause, Jeanette; Prior, Timothy J.; Hubin, Timothy J.

doi:10.1039/d1ce01534f

Synthesis and Characterization of Late Transition Metal Complexes of Mono-Acetate Pendant Armed Ethylene Cross-Bridged Tetraazamacrocycles with Promise as Oxidation Catalysts for Dye Bleaching (2022)
Journal Article
Hoang, T., Mondal, S., Allen, M. B., Garcia, L., Krause, J. A., Oliver, A. G., …Hubin, T. J. (2023). Synthesis and Characterization of Late Transition Metal Complexes of Mono-Acetate Pendant Armed Ethylene Cross-Bridged Tetraazamacrocycles with Promise as Oxidation Catalysts for Dye Bleaching. Molecules, 28(1), Article 232. https://doi.org/10.3390/molecules28010232

Ethylene cross-bridged tetraazamacrocycles are known to produce kinetically stable transition metal complexes that can act as robust oxidation catalysts under harsh aqueous conditions. We have synthesized ligand analogs with single acetate pendant ar... Read More about Synthesis and Characterization of Late Transition Metal Complexes of Mono-Acetate Pendant Armed Ethylene Cross-Bridged Tetraazamacrocycles with Promise as Oxidation Catalysts for Dye Bleaching.

Host-guest inclusion complexes formed between a symmetrical tetrasubstituted cucurbit[6]uril and glycine (2022)
Journal Article
Yuan, S. W., Shan, P. H., Yang, M. X., Yang, M. X., Ma, P. H., Prior, T. J., …Xiao, X. (2022). Host-guest inclusion complexes formed between a symmetrical tetrasubstituted cucurbit[6]uril and glycine. CrystEngComm, https://doi.org/10.1039/d2ce01308h

Herein, we have investigated the host-guest inclusion complexes formed on interaction of the symmetric tetramethyl-substituted cucurbit[6]uril (TMeQ[6]) with glycine (Gly) under different conditions. The interactions have been studied both in solutio... Read More about Host-guest inclusion complexes formed between a symmetrical tetrasubstituted cucurbit[6]uril and glycine.

Bn2DT3A, a Chelator for 68Ga Positron Emission Tomography: Hydroxide Coordination Increases Biological Stability of [68Ga][Ga(Bn2DT3A)(OH)]− (2022)
Journal Article
Price, T. W., Renard, I., Prior, T. J., Kubíček, V., Benoit, D. M., Archibald, S. J., …Stasiuk, G. J. (2022). Bn2DT3A, a Chelator for 68Ga Positron Emission Tomography: Hydroxide Coordination Increases Biological Stability of [68Ga][Ga(Bn2DT3A)(OH)]−. Inorganic chemistry, 61(43), 17059–17067. https://doi.org/10.1021/acs.inorgchem.2c01992

The chelator Bn2DT3A was used to produce a novel 68Ga complex for positron emission tomography (PET). Unusually, this system is stabilized by a coordinated hydroxide in aqueous solutions above pH 5, which confers sufficient stability for it to be use... Read More about Bn2DT3A, a Chelator for 68Ga Positron Emission Tomography: Hydroxide Coordination Increases Biological Stability of [68Ga][Ga(Bn2DT3A)(OH)]−.

Cucurbit[6]uril-based carbon dots for recognizing l-tryptophan and capecitabine (2022)
Journal Article
Liu, M., Cen, R., Lu, J. H., Meng, T. H., Li, C. R., Redshaw, C., …Xiao, X. (in press). Cucurbit[6]uril-based carbon dots for recognizing l-tryptophan and capecitabine. Materials Chemistry Frontiers, https://doi.org/10.1039/d2qm00589a

Fluorescent nitrogen and fluorine doped carbon dots (CDs) were prepared by a hydrothermal method using levofloxacin (LVFX) and cucurbit[6]uril (Q[6]) as the nitrogen and carbon sources, respectively. Decomposition of LVFX occurred at elevated tempera... Read More about Cucurbit[6]uril-based carbon dots for recognizing l-tryptophan and capecitabine.

Ring Opening Polymerization of Lactides and Lactones by Multimetallic Titanium Complexes Derived from the Acids Ph2C(X)CO2H (X = OH, NH2) (2022)
Journal Article
Zhang, X., Prior, T. J., Chen, K., Santoro, O., & Redshaw, C. (2022). Ring Opening Polymerization of Lactides and Lactones by Multimetallic Titanium Complexes Derived from the Acids Ph2C(X)CO2H (X = OH, NH2). Catalysts, 12(9), Article 935. https://doi.org/10.3390/catal12090935

The reactions of the titanium alkoxide [Ti(OR)4] (R = Me, nPr, iPr, tBu) with the acids 2,2’-Ph2C(X)(CO2H), where X = OH and NH2, i.e., benzilic acid (2,2’-diphenylglycolic acid, L1H2), and 2,2’-diphenylglycine (L2H3), have been investigated. The var... Read More about Ring Opening Polymerization of Lactides and Lactones by Multimetallic Titanium Complexes Derived from the Acids Ph2C(X)CO2H (X = OH, NH2).

Niobium and Tantalum complexes derived from the acids Ph<inf>2</inf>C(X)CO<inf>2</inf>H (X = OH, NH<inf>2</inf>): synthesis, structure and ROP capability (2022)
Journal Article
Zhang, X., Prior, T. J., & Redshaw, C. (2022). Niobium and Tantalum complexes derived from the acids Ph2C(X)CO2H (X = OH, NH2): synthesis, structure and ROP capability. New journal of chemistry = Nouveau journal de chimie, https://doi.org/10.1039/d2nj02527b

Reaction of benzilic acid, Ph2C(OH)(CO2H), L1H2, with equimolar amounts of M(OR)5 (M = Nb, Ta) led, following work-up, to the tetranuclear complexes [Nb4(OEt)8(L1)4(μ-O)2] (1) or [Ta4(OEt)8(L1)4(μ-O)2]·0.5MeCN (2·0.5MeCN), respectively. Similar use o... Read More about Niobium and Tantalum complexes derived from the acids Ph<inf>2</inf>C(X)CO<inf>2</inf>H (X = OH, NH<inf>2</inf>): synthesis, structure and ROP capability.

Cucurbit[6]uril-based supramolecular frameworks formed through outer surface interactions and application for iodine adsorption (2022)
Journal Article
Hu, J. H., Cen, R., Liu, M., Shan, P. H., Prior, T. J., Redshaw, C., …Xiao, X. (2022). Cucurbit[6]uril-based supramolecular frameworks formed through outer surface interactions and application for iodine adsorption. Inorganic Chemistry Communications, 142, Article 109663. https://doi.org/10.1016/j.inoche.2022.109663

The interaction between the outer surface of cucurbit[6]uril (Q[6]) and methyl triphenyl phosphorus iodide (MTPI) has been studied in the presence of [CdCl4]2-. The MTPI is connected to four neighboring Q[6]s through weak interactions such as C-H···π... Read More about Cucurbit[6]uril-based supramolecular frameworks formed through outer surface interactions and application for iodine adsorption.

A study of the inclusion complex formed between cucurcubit[7]uril and 1-[4-(dimethylamino)phenyl]-ethanone (2022)
Journal Article
Feng, X. H., Yu, Z. C., Zhang, W., Redshaw, C., Prior, T. J., Meng, T. H., …Xiao, X. (2022). A study of the inclusion complex formed between cucurcubit[7]uril and 1-[4-(dimethylamino)phenyl]-ethanone. Polyhedron, 222, Article 115938. https://doi.org/10.1016/j.poly.2022.115938

In the work, we have studied the interaction of cucurbit[7]uril (Q[7]) with 1-[4-(dimethylamino)phenyl]-ethanone (DAPE) using a variety of techiniques including 1H NMR spectroscopy, UV–vis adsorption and fluorescence spectroscopies, Isothermal titrat... Read More about A study of the inclusion complex formed between cucurcubit[7]uril and 1-[4-(dimethylamino)phenyl]-ethanone.

A study of the inclusion complex formed between cucurbit[8]uril and isonicotinic acid (2022)
Journal Article
Yu, Z. C., Lu, Y., Shan, P. H., Fan, Y., Tao, Z., Xiao, X., …Redshaw, C. (2022). A study of the inclusion complex formed between cucurbit[8]uril and isonicotinic acid. Journal of Inclusion Phenomena and Macrocyclic Chemistry, https://doi.org/10.1007/s10847-022-01141-6

The complexation between cucurbit[8]uril, Q[8], and isonicotinic acid has been studied using 1H NMR spectroscopy, UV–Vis absorption spectroscopy, Raman spectroscopy and single crystal X-ray diffraction. The results revealed that the 2:1 inclusion com... Read More about A study of the inclusion complex formed between cucurbit[8]uril and isonicotinic acid.

Heterometallic cobalt(ii) calix[6 and 8]arenes: synthesis, structure and electrochemical activity (2022)
Journal Article
Ignaszak, A., Patterson, N., O'Brien, C., True, A., Elsegood, M. R., Prior, T. J., & Redshaw, C. (2022). Heterometallic cobalt(ii) calix[6 and 8]arenes: synthesis, structure and electrochemical activity. RSC advances, 12(19), 11672-11685. https://doi.org/10.1039/d2ra01009g

Heterometallic cobalt p-tert-butylcalix[6 and 8]arenes have been generated from the in situ reaction of lithium reagents (n-BuLi or t-BuOLi) or NaH with the parent calix[n]arene and subsequent reaction with CoBr2. The reverse route, involving the add... Read More about Heterometallic cobalt(ii) calix[6 and 8]arenes: synthesis, structure and electrochemical activity.

Expanding and quantifying the crystal chemistry of the flexible ligand 15aneN5 (2022)
Journal Article
Shircliff, A. D., Davilla, D. J., Allbritton, E. M. A., Gorbet, M. J., Jones, D. G., Tresp, D. S., …Hubin, T. J. (2022). Expanding and quantifying the crystal chemistry of the flexible ligand 15aneN5. CrystEngComm, 24(6), 1218-1236. https://doi.org/10.1039/d1ce01534f

Tetraazamacrocycles have been very extensively exploited as transition metal ligands for a variety of purposes, including catalysis, medical imaging, pharmaceuticals, etc. However, the pentaazamacrocycles are much less commonly used for similar purpo... Read More about Expanding and quantifying the crystal chemistry of the flexible ligand 15aneN5.

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