3′-(4-Chloro­benzo­yl)-1′-methyl-4′-[5-(2-thien­yl)-2-thien­yl]spiro­[acenaphthyl­ene-1,2′-pyrrolidin]-2(1H)-one

In the title compound, C31H22ClNO2S2, the five-membered pyrrolidine ring, which exhibits an envelope conformation, makes a dihedral angle of 87.4 (2)° with the acenaphthyl­ene ring system. The crystal structure is stabilized by π–π inter­actions [centroid–centroid distance = 3.869 (2) Å]. A C atom and the S atom of the thiophene ring are disordered over two positions with refined occupancies of 0.629 (7) and 0.372 (7)

1′-Methyl-3′-(4-methyl­benzo­yl)-4′-[5-(2-thien­yl)-2-thien­yl]spiro­[acenaphthyl­ene-1,2′-pyrrolidin]-2(1H)-one

In the title compound, C32H25NO2S2, the mean plane through the five-membered pyrrolidine ring, which exhibits an envelope conformation, makes dihedral angles of 82.3 (1) and 83.9 (9)° with the benzene ring and the acenaphthyl­ene ring system, respectively. The dihedral angle between the thiophene rings is 19.0(3)°. The crystal structure shows C—H⋯π and π–π inter­actions [centroid–centroid distance = 3.869 (2) Å]

Demonstration of base catalyzed decomposition process, Navy Public Works Center, Guam, Mariana Islands

Base Catalyzed Decomposition (BCD) is a chemical dehalogenation process designed for treating soils and other substrate contaminated with polychlorinated biphenyls (PCB), pesticides, dioxins, furans, and other hazardous organic substances. PCBs are heavy organic liquids once widely used in industry as lubricants, heat transfer oils, and transformer dielectric fluids. In 1976, production was banned when PCBs were recognized as carcinogenic substances. It was estimated that significant quantities (one billion tons) of U.S. soils, including areas on U.S. military bases outside the country, were contaminated by PCB leaks and spills, and cleanup activities began. The BCD technology was developed in response to these activities. This report details the evolution of the process, from inception to deployment in Guam, and describes the process and system components provided to the Navy to meet the remediation requirements. The report is divided into several sections to cover the range of development and demonstration activities. Section 2.0 gives an overview of the project history. Section 3.0 describes the process chemistry and remediation steps involved. Section 4.0 provides a detailed description of each component and specific development activities. Section 5.0 details the testing and deployment operations and provides the results of the individual demonstration campaigns. Section 6.0 gives an economic assessment of the process. Section 7.0 presents the conclusions and recommendations form this project. The appendices contain equipment and instrument lists, equipment drawings, and detailed run and analytical data

<span style="font-size:11.0pt;line-height:115%; font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family: "Times New Roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font: minor-latin;mso-bidi-font-family:Calibri;mso-bidi-theme-font:minor-latin; mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">Synthesis and dyeing characteristics of acenaphtho[4,5-<i>b</i>]pyrazines</span>

92-94<span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:calibri;mso-bidi-theme-font:minor-latin;="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">Three heterofused disperse dyes, 2,3-disubstituted acenaphtho[4,5-b]pyrazines, were prepared and their dyeing performance on polyester fibres was assessed. The dyeings on polyester had yellow shades with good pick-up and moderate light and sublimation fastness.</span

4-Ferrocenyl-1-methyl-3-benzoylspiro[pyrrolidine-2,11&amp;#8242;-indeno[1,2-b]quinoxaline]

In the title compound, [Fe(C5H5)(C31H24N3O)], the pyrrolidine ring adopts a twist conformation. The pyrrolidine ring is almost perpendicular to the indenoquinoxaline ring system, making a dihedral angle of 84.44&amp;#8197;(5)&amp;#176;. The cyclopentadienyl rings of the ferrocene moiety adopt an eclipsed conformation. The crystal packing features weak C&amp;#8212;H...N and C&amp;#8212;H...&amp;#960; interactions