Bis(ethylenediamine)copper(II) bis(O,O′-diethyl dithiophosphate)

Abstract

In the structure of the title compound, [Cu(II)(en)(2)][(EtO)(2)P(S)S](2) (en is ethylenediamine) or [Cu(C(2)H(8)N(2))(2)](C(4)H(10)O(2)PS(2))(2), the Cu atom lies on a center of inversion and is coordinated in a slightly distorted square coordination geometry by four N atoms from two ethylenediamine molecules. The diethyl dithiophosphate moieties, (EtO)(2)P(S)S(-), act as counter-anions.

A New Route to Cyclohexanone using H2CO3 as a Molecular Catalytic Ligand to Boost the Thorough Hydrogenation of Nitroarenes over Pd Nanocatalysts

“…Mechanistically, it demonstrated that CO 2 dissolved in water generates H 2 CO 3 which couples with and thus activates the nitrobenzene molecules adsorbed on the Pd surface, giving high yields of cyclohexanone (90‐97 %). An important point to consider relates to the post‐catalysis purification of gaseous‐H 2 CO 3 ‐catalyzed reaction products like cyclohexanone: unlike a liquid or solid ligand (e. g. triethanolamine, ethylenediamine, (R,R)‐2,3‐Bis(t‐butylmethylphosphino)quinoxaline, 4,4′‐di‐(3‐pentyl)‐2,2′‐dipyridyl, or 2,2′‐bipyridine‐4,4′‐dicarboxylic acid chloride), gaseous CO 2 can be easily sequestered upon completion of a reaction, dramatically simplifying any required clean‐up steps.…”

“…However, until now, H 2 CO 3 , generated from dissolved CO 2 in water, has not been employed as a gasligand additive for catalytic and chemical engineering applications. Whereas traditional organic ligands or other additives [4][5][6][7] that are typically used to activate heterogeneous nanocatalysts incur additional costs from the need for separation and purification of the target products, the reutilization of gaseous state CO 2 not only facilitates fast separations following reactions, but also efficiently reduced CO 2 emission in the atmosphere which human activity contributes about 35 GT per year. [1] Our research group has been exploring the industrially important synthesis of cyclohexanone, an important intermediate for the production of the caprolactam and adipic acid that is needed to manufacture nylon 6 and nylon 66.…”

trans-Bis(ethylenediamine)bis(sulfadiazinato)copper(II)

“…ethylenediamine molecules, are comparable to the corresponding values 1.997 (3) and 2.001 (3) Å (Lokaj et al, 1991), 2.033 (3) and 2.042 (3) Å (Anacona et al, 2002), 1.996 (2) and 2.022 (3) Å (Kovbasyuk et al, 1997), 2.007 (3)-2.024 (3) Å (Kovbasyuk et al, 1997), 2.016 (2) and 2.019 (2) Å (Fun et al, 2002), and 2.007 (3) and 2.010 (3) Å (Kazak et al, 2004). The S1-O bond distances of 1.458 (3) and 1.449 (3) Å are longer than the corresponding bonds in the pure sulfadiazine with values of 1.429 (2) and 1.437 (2) Å .…”