Search results for "copper"

showing 10 items of 3029 documents

CCDC 641246: Experimental Crystal Structure Determination

2008

Related Article: B.Abarca, R.Ballesteros, M.Chadlaoui, C.R.de Arellano, J.A.Real|2007|Eur.J.Inorg.Chem.||4574|doi:10.1002/ejic.200700640

tetrakis(mu~3~-(Pyridin-2-yl)-(6-([123]triazolo[15-a]pyridin-3-yl)pyridin-2-yl)(methoxy)methanone)-tetra-copper(ii) tetranitrate octahydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 1020496: Experimental Crystal Structure Determination

2014

Related Article: Huayan Yang , Yu Wang , Juanzhu Yan , Xi Chen , Xin Zhang , Hannu Häkkinen , and Nanfeng Zheng|2014|J.Am.Chem.Soc.|136|7197|doi:10.1021/ja501811j

tetrakis(tetraphenylphosphonium) icosakis(mu-4-(trifluoromethyl)benzenethiolato)-trideca-gold-dodeca-copper dichloromethane solvate tetrahydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 1979322: Experimental Crystal Structure Determination

2020

Related Article: Noelia Maldonado, Josefina Perles, José Ignacio Martínez, Carlos J. Gómez-García, María-Luisa Marcos, Pilar Amo-Ochoa|2020|Cryst.Growth Des.|20|5097|doi:10.1021/acs.cgd.0c00268

tetrakis{mu-[3-(24-dioxo-34-dihydropyrimidin-1(2H)-yl)propanoato]}-aqua-methanol-di-copper(ii) dihydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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A competitive reactivity study on the oxidative cyclization of thiosemicarbazones into 1,3,4-thiadiazoles

2022

Abstract In order to obtain useful insights on the mechanism of formation of 2(3H)-imino-1,3,4-thiadiazoles by oxidative cyclization of aldehyde thiosemicarbazones with Cu(II) or Fe(III) salts, a competitive reactivity study was performed on a suitable set of diversely substituted substrates, by means of HPLC techniques. This approach enabled to exploit Hammett’s equation without performing otherwise difficult-to-run kinetic experiments. The results presented herein support the hypothesis that the formation of the thiadiazole ring is induced by the attack of the oxidizing Lewis acid metal cation onto the imine-like nitrogen atom of the thiosemicarbazone substrate. Beyond mechanistic interpr…

thiosemicarbazonesOrganic ChemistrySettore CHIM/06 - Chimica OrganicaCopper(II) chlorideoxidative cyclization134-thiadiazoleArkivoc

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Characteristics of acute toxicity dynamics of selected toxicants on aquatic crustaceans

2019

Determining the value of a half-effective or half-life concentration or dose of toxicant is the main purpose of acute toxicity studies, and this is also the most commonly used value in the toxicity characteristics of substances. By conducting tests that meet the criteria and requirements for the determination of acute toxicity, due to the use of appropriate mathematical tools and concentrations resulting in complete lethal effects in the studied groups, considerably more important values can be achieved, which give a possibility for the analysis of the entire process's dynamics, as well as determining the threshold values of the effect time and toxicant concentration. This was the purpose o…

threshold concentrationDaphnia magnaacute toxicityCypris puberacopper and ammonium ionsEcological Chemistry and Engineering S-Chemia I Inzynieria Ekologiczna S

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CCDC 1900330: Experimental Crystal Structure Determination

2019

Related Article: Lucas H. G. KalinkeDanielle CangussuFrancesc LloretRosaria BrunoDonatella ArmentanoEmilio PardoJesus Ferrando-Soria, Jesus Ferrando-Soria|2019|Cryst.Growth Des.|19|3905|doi:10.1021/acs.cgd.9b00324

tri-calcium(ii) pentakis(mu-22'-[[44'-bi-13-thiazole]-22'-diylbis(azanidediyl)]bis(oxoacetato))-hexakis(mu-aqua)-(22'-[[44'-bi-13-thiazole]-22'-diylbis(azanidediyl)]bis(oxoacetato))-nona-copper(ii) unknown solvate octacosahydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 1512900: Experimental Crystal Structure Determination

2017

Related Article: Shobhraj Haldar, Gonela Vijaykumar, Luca Carrella, Steven Batha, Ghezai T. Musie, Manindranath Bera|2017|ACS Omega|2|1535|doi:10.1021/acsomega.7b00189

tri-sodium (bis(mu-22'-((2-oxidopropane-13-diyl)bis((((pyridin-2-yl)methyl)azanediyl)methylene))dibenzoato)-(mu-phosphato)-tetra-copper) dihydroxide tetradecahydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 725442: Experimental Crystal Structure Determination

2010

Related Article: E.Colacio, H.Aouryaghal, A.J.Mota, J.Cano, R.Sillanpaa, A.Rodriguez-Dieguez|2009|CrystEngComm|11|2054|doi:10.1039/b906382j

tris((mu~2~-Pyrimidine-2-carboxylato)-tetrakis(NNN'N'-tetramethylethylene-12-diamine))-aqua-chloro-tetra-copper tetraperchlorate hydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 1814033: Experimental Crystal Structure Determination

2018

Related Article: Guocheng Deng, Sami Malola, Juanzhu Yan, Yingzi Han, Peng Yuan, Chaowei Zhao, Xiting Yuan, Shuichao Lin, Zichao Tang, Boon K. Teo, Hannu Häkkinen, Nanfeng Zheng|2018|Angew.Chem.,Int.Ed.|57|3421|doi:10.1002/anie.201800327

tris(mu-(2S4S)-(-)-24-bis(diphenylphosphino)pentane)-hexakis(mu-pyridine-2-thiolato)-di-copper-trideca-goldSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 1814032: Experimental Crystal Structure Determination

2018

tris(mu-13-bis(diphenylphosphino)propane)-hexakis(mu-pyridine-2-thiolato)-di-copper-trideca-goldSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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