Search results for "CHROMIUM"
showing 10 items of 494 documents
CCDC 915419: Experimental Crystal Structure Determination
2013
Related Article: M.Clemente-Leon,E.Coronado,M.Lopez-Jorda|2013|Dalton Trans.|42|5100|doi:10.1039/C3DT32996H
CCDC 813345: Experimental Crystal Structure Determination
2011
Related Article: M.Clemente-Leon, E.Coronado, M.Lopez-Jorda, C.Desplanches, S.Asthana, Hongfeng Weng, J.-F.Letrad|2011|Chemical Science|2|1121|doi:10.1039/c1sc00015b
CCDC 813714: Experimental Crystal Structure Determination
2011
Related Article: M.Clemente-Leon, E.Coronado, M.Lopez-Jorda, C.Desplanches, S.Asthana, Hongfeng Weng, J.-F.Letrad|2011|Chemical Science|2|1121|doi:10.1039/c1sc00015b
CCDC 1555613: Experimental Crystal Structure Determination
2018
Related Article: Maciej Ptak, Bartosz Zarychta, Dagmara Stefańska, Aneta Ciupa, Waldeci Paraguassu|2019|Dalton Trans.|48|242|doi:10.1039/C8DT04246B
CCDC 1555612: Experimental Crystal Structure Determination
2018
Related Article: Maciej Ptak, Bartosz Zarychta, Dagmara Stefańska, Aneta Ciupa, Waldeci Paraguassu|2019|Dalton Trans.|48|242|doi:10.1039/C8DT04246B
CCDC 1480930: Experimental Crystal Structure Determination
2016
Related Article: Marta Mon, Thais Grancha, Michel Verdaguer, Cyrille Train, Donatella Armentano and Emilio Pardo|2016|Inorg.Chem.|55|6845|doi:10.1021/acs.inorgchem.6b01256
CCDC 1909316: Experimental Crystal Structure Determination
2019
Related Article: Cristian Martínez-Hernández, Samia Benmansour, Carlos J. Gómez García|2019|Polyhedron|170|122|doi:10.1016/j.poly.2019.05.034
Rh(I) Coordination Chemistry of Chiral α-Aminophosphine(η6-arene)chromium Tricarbonyl Ligands
2003
The diastereoselective addition of Ph(2)PH to the chiral ortho-substituted eta(6)-benzaldimine complexes (eta(6)-o-X-C(6)H(4)CH=NAr)Cr(CO)(3) (1, X = MeO, Ar = p-C(6)H(4)OMe; 2, X = Cl, Ar = Ph) leads to the formation of the corresponding chiral aminophosphines (alpha-P,N) Ph(2)P-CH(Ar(1))-NHAr(2) (3, Ar(1) = o-C(6)H(4)(OCH(3))[Cr(CO)(3)], Ar(2) = p-C(6)H(4)OCH(3); 4, Ar(1) = o-C(6)H(4)Cl[Cr(CO)(3)], Ar(2) = Ph) in equilibrium with the starting materials. The uncomplexed benzaldimine (o-ClC(6)H(4)CH=NPh), 2', analogously produces an equilibrium amount of the corresponding aminophosphine Ph(2)P-CH(Ar(1))-NHAr(2) (4', Ar(1) = o-C(6)H(4)Cl, Ar(2) = Ph). Depending on the equilibrium constant, t…
Immobilization of vegetable tannins on tannery chrome shavings and their use for the removal of hexavalent chromium from contaminated water
2011
Abstract Chestnut (C) and mimosa (M) tannins immobilized on chrome shavings (CS) as an adsorbent have been proposed to be an efficient and economical alternative in hexavalent chromium removal from aqueous solutions. The adsorption of hexavalent chromium onto chrome shavings-tannin (CS-T) adsorbents was performed using batch equilibrium technique at 25 ± 2 °C. The effect of pH is highly important especially in the case of high concentrations of hexavalent chromium. The maximum chromium uptake was obtained at pH 4. Two hours of contact time are enough to reach equilibrium. Sorption of chromium on CS-T was found to follow a pseudo-second order kinetic model (with correlation coefficients grea…
A novel bisphosphonate-based solid phase method for effective removal of chromium(iii) from aqueous solutions and tannery effluents
2013
Effective removal of chromium(III) from waste waters e.g. in the leather industry is required due to continuously tightening environmental regulations, and several methods such as precipitation and adsorption are currently in use. Nevertheless, more efficient, straightforward and inexpensive methods are constantly being sought. The current study describes a novel method to separate chromium(III) from aqueous solutions based on the use of solid bisphosphonates with a P–C–P backbone. Five classes of bisphosphonates with different functional groups and alkyl chain lengths at the center carbon, in all 16 compounds, were prepared and their suitability for metal ion complexing as chelating agents…