Author
M. C. Noble
Bio: M. C. Noble is an academic researcher from University of Arkansas. The author has contributed to research in topics: Crystal structure & Norbornadiene. The author has an hindex of 6, co-authored 14 publications receiving 200 citations.
Papers
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TL;DR: In this paper, the preparation, spectral properties, and crystal structure of a mononuclear copper(II) complex of acetylsalicylate and pyridine are reported.
76 citations
TL;DR: In this article, the differences structurales entre C 6 H 4 S 2 N 2 and C 6H 4 S 3 N 2 sont discutees a partir de calculs MNDO.
Abstract: Preparation des 2 composes du titre et de leurs composes d'addition avec le norbornadiene. Determination par diffraction RX des structures moleculaires de C 6 H 4 S 2 N 2 et des 2 composes d'addition. Les differences structurales entre C 6 H 4 S 2 N 2 et C 6 H 4 S 3 N 2 sont discutees a partir de calculs MNDO
57 citations
TL;DR: The reaction of norbornadiene with (triphenylphosphorediyl)aminocyclotrithiatriazene produces the cycloadduct Ph3PN-S3N3•C7H8 as mentioned in this paper.
Abstract: The reaction of norbornadiene with (triphenylphosphoranediyl)aminocyclotrithiatriazene produces the cycloadduct Ph3PN—S3N3•C7H8. The crystal and molecular structure of this compound has been determ...
26 citations
TL;DR: In this paper, it was shown that the sulfur compound is orthorhombic, Cmca, with a = 9.872 (1), b=9.724 (1) A, V=1479.0 (4) A3, Z=4, and Dc = 2.21 g cm−2.
Abstract: Crystals of the title sulfur compound are orthorhombic, Cmca, with a=9.872 (1), b=9.594 (1), and c=15.488 (1) A, V=1467.0 (4) A3, Z=4, and Dc =1.38 g cm−2. The final refinement using 537 observed reflections for 57 variable gave R=0.025. The non-isomorphous crystals of the selenium analog are also orthorhombic, Cmca, with a=9.300 (1), b=19.724 (1), c=8.064 (1) A, V=1479.1 (4) A, Z=4, and Dc =2.21 g cm−2. Refinement with 48 variables using 447 observed reflections gives R=0.041. In both structures the molecules have 2/m symmetry imposed by the lattice symmetry; the S (or Se) atoms of the central 4-membered ring are located on the rotation axis, and the P, exo S (or Se), and two carbon atoms of the t-butyl group lie on the mirror plane. The central rings are not readily hydrolyzed or oxidized by exposure to air, apparently as a result of steric protection provided by the t-butyl groups.
19 citations
TL;DR: In this paper, an expedient synthesis of (1 Z, 3 Z )-1, 4-dibromobutadiene was reported, where the dibromide was treated with s- or t-butyllithium.
10 citations
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TL;DR: If the potential opportunities of the Cu-NSAIDs are to be completely realized, a mechanistic understanding and delineation of their in vivo and in vitro pharmacological activity is fundamental, along with further characterization of their pharmacokinetic/pharmacodynamic disposition.
482 citations
TL;DR: In this article, the crystal structure of bis(diisopropylsalicylato)(1,10-phenanthroline)copper(II), [Cu(phen)(Hdips)2], has been determined; CuII is in a tetragonal co-ordination environment with inplane bonds to 2 nitrogens from phen[Cu-N 2.014(4)A] and 2 oxygens from the carboxylates of Hdips [Cu-O 1.951(3)A], with weaker off-axial
Abstract: Complexes of CuII, FeIII, CoII, NiII, TiIV and ZnII with 3,5-disubstituted salicylates, and ternary complexes of CuII containing substituted phenanthrolines have been prepared and characterised. The crystal structure of bis(diisopropylsalicylato)(1,10-phenanthroline)copper(II), [Cu(phen)(Hdips)2], has been determined; CuII is in a tetragonal co-ordination environment with in-plane bonds to 2 nitrogens from phen[Cu–N 2.014(4)A] and 2 oxygens from the carboxylates of Hdips [Cu–O 1.951(3)A], with weaker off-axial bonds to carboxylate oxygens [Cu–O 2.557(3)A]. The hydroxyl oxygen of Hdips is not co-ordinated. These complexes have been tested for antiviral and cytotoxic activity. Most are potently cytotoxic, especially [Cu(dmphen)(Hdips)2], where dmphen is 2,9-dimethylphenanthroline.
202 citations
TL;DR: A review on syntheses, chemical reactions, structures and bonding of phosphorane iminato complexes of main group elements is given in this paper, where the ligand group is not known in the ionic state.
143 citations
TL;DR: Several adducts of Cu(II) 2 (aspinate) 4 of formula [Cu(II)(aspirinate) 2 L 2 ], where L is pyridine, nicotinamide, 3picoline, 4-picoline and imidazole, 1-methyl-imidazoles, diethylamine and dimethyl sulfoxide, have been synthesized as discussed by the authors.
131 citations
TL;DR: The Structure Analysis Restrained by Ab initio Calculations for Electron diffractioN (SARACEN) method as discussed by the authors has been used to determine the structure of large and asymmetric molecules.
Abstract: Structures of molecules in the gas phase, determined experimentally, provide definitive information about their identity, reactivity and other properties, free from intermolecular interactions. Available methods have not been applicable to large and asymmetric molecules. Now the SARACEN (Structure Analysis Restrained by Ab initio Calculations for Electron diffractioN) method, using data from computational methods to complement experimental data, has opened the door to full structure determination for all sufficiently volatile molecules.
110 citations