Publications by authors named "Brandon L Mash"

Correction for 'Unorthodox crystalline drug salts the reaction of amine-containing drugs with CO' by Mohammad Soltani , , 2019, , 13546-13549, https://doi.org/10.1039/C9CC06429J.

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The synthesis and structural, electrochemical, spectroscopic, and magnetic characterizations of Cr(HMC) catecholate and semiquinonate complexes are reported herein, where HMC is 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane. [Cr(HMC)(Cat)] complexes (Cat = catecholate, []; tetrachlorocatecholate, []; and 3,5-di--butylcatecholate, []) were prepared from the reaction between appropriate catechol and [Cr(HMC)Cl]Cl reduced by zinc. Chemical oxidation of [] by FcPF resulted in -[Cr(HMC)(SQ)] ([], SQ = 3,5-di--butylsemiquinonate).

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A series of trivalent Group 15 bis(tert-butylamido)cyclodiphosph(iii)azane element bi- and tricycles of the formulae {[(tBuNP)2(tBuN)2]ElX}, El = P, As, Sb, Bi, where X = Ph, OPh, OtBu, N3, hexamethyldisilylamide (HMDS), OTf, was synthesized from the corresponding chlorides via salt elimination. The ensuing compounds were studied spectroscopically and X-ray crystallographically with a particular focus on the length of the El-X bond. While the Group 15 element to phenyl and HMDS were of normal lengths and completely covalent, those to azide appeared to be partly ionic.

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Drugs containing amine groups react with CO2 to form crystalline ammonium carbamates or carbamic acids. In this approach, both the cation and anion of the salt, or the neutral CO2 adduct, are derived from the parent drug, generating new crystalline versions in a 'masked' or prodrug form. It is proposed that this approach may serve as a valuable new tool in engineering the physical properties of drugs for formulation purposes.

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Reported herein are the first examples of the formation of Ru-C bonds in paddlewheel diruthenium species. A series of six Ru( ap)(CH-4-X) type compounds ( ap = 2-anilinopyridinate; X = NMe (1), N,N-(CH-4-OMe) (2), Bu (3), H (4), Br (5), CF (6)) was synthesized by employing the lithium-halogen exchange reaction with a variety of para-substituted aryl halides. These compounds have been characterized via electronic absorption spectroscopy, cyclic voltammetry, mass spectrometry, and magnetism studies, and their molecular structures have been established by single-crystal X-ray diffraction studies.

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