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Full-Text Articles in Physical Sciences and Mathematics
Copper(I) Complexes Of Heterocyclic Thiourea Ligands, Aakarsh Saxena, Emily C. Dugan, Jeffrey Liaw, Matthew D. Dembo, Robert D. Pike
Copper(I) Complexes Of Heterocyclic Thiourea Ligands, Aakarsh Saxena, Emily C. Dugan, Jeffrey Liaw, Matthew D. Dembo, Robert D. Pike
Arts & Sciences Articles
The coordination of heterocyclic thiourea ligands (L = N-(2-pyridyl)-N′-phenylthiourea (1), N-(2-pyridyl)-N′-methylthiourea (2), N-(3-pyridyl)-N′-phenylthiourea (3), N-(3-pyridyl)-N′-methylthiourea (4), N-(4-pyridyl)-N′-phenylthiourea (5), N-(2-pyrimidyl)-N′-phenylthiourea (6), N-(2-pyrimidyl)-N′-methylthiourea (7), N-(2-thiazolyl)-N′-methylthiourea (8), N-(2-benzothiazolyl)-N′-methylthiourea (9), N,N′-bis(2-pyridyl)thiourea (10) and N,N′-bis(3-pyridyl)thiourea (11)) with CuX (X = Cl, Br, I, NO3) has been investigated. CuX:L product stoichiometries of 1:1–1:5 were found, with 1:1 being most common. X-ray structures of four 3-coordinate mononuclear CuXL2 complexes (CuCl(6)2, CuCl(7)2, CuBr(6)2, and CuBr(9)2) …
Aqua {6,60-Dimethoxy-2,20-[Ethane-1,2- Diylbis(Nitrilomethylidyne)]Diphenolato}- (4-Hydroxybenzoato)Manganese(Iii), R. Reshma, V. Soumya, S. M. Simi, V. S. Thampidas, Robert D. Pike
Aqua {6,60-Dimethoxy-2,20-[Ethane-1,2- Diylbis(Nitrilomethylidyne)]Diphenolato}- (4-Hydroxybenzoato)Manganese(Iii), R. Reshma, V. Soumya, S. M. Simi, V. S. Thampidas, Robert D. Pike
Arts & Sciences Articles
The title compound, [Mn(C18H18N2O4)(C7H5O3)(H2O)], was synthesized by a template reaction of ethane-1,2-diamine and 3-methoxysalicylaldehyde in presence of manganese(II) 4-hydroxybenzoate. The Jahn-Teller-distorted manganese(III) centre has an octahedral geometry. Extensive O-HO hydrogen-bonding interactions generate a two-dimensional sheet structure parallel to (103).
Preparation Of 5-Bromo-2-Naphthol: The Use Of A Sulfonic Acid As A Protecting And Activating Group, Christopher J. Abelt
Preparation Of 5-Bromo-2-Naphthol: The Use Of A Sulfonic Acid As A Protecting And Activating Group, Christopher J. Abelt
Arts & Sciences Articles
The preparation of 5-bromo-2-naphthol (4) in three steps from 5-amino-2-naphthol (1) is described. A sulfonic acid group is introduced at the 1-position as an activating and protecting group for the Sandmeyer reaction. The sulfonate group allows for the use of only water and sulfuric acid as solvents. The sulfonic acid is introduced with three equivalents of sulfuric acid, and it is removed in 20% aq. sulfuric acid.
Piperazinium Chlorocuprates(I), Jacob E. Kuperstock, Amanda N. Ley, Robert D. Pike
Piperazinium Chlorocuprates(I), Jacob E. Kuperstock, Amanda N. Ley, Robert D. Pike
Arts & Sciences Articles
The formation from aqueous solution of networks containing piperazinium hydrochlorides with copper(I) chloride is described. Four new X-ray crystal structures are reported: (H2Pip)[Cu2Cl4] (two isomeric phases: 1A and 1B), (H2MePip)[Cu3Cl5] (2), and (H2Me2Pip)[Cu4Cl6] (3) (Pip = piperazine, MePip = N-methylpiperazine, Me2Pip = N,N′-dimethylpiperazine. In 1A (P-1, a = 6.3141(2), b = 6.8248(2), c = 6.9067(2), α = 90.707(2), β = 110.748(2), γ = 110.799(2), V = 256.918(13), Z = 2) corner-sharing Cu2Cl2 rhomboid dimers form infinite chains running parallel to the a-axis. In 1B (Pbcn, a = 9.9442(6), b = 8.0622(5), …