We report the synthesis of Fe(TalkylP)(OClO)] (alkyl = ethyl and propyl) and [Fe(TPrP)(THF)]ClO, which are characterized by UV-vis, EPR, X-ray crystallography, and solid-state magnetic susceptibilities. The macrocycles of all three complexes are ruffled, all of the structural features for [Fe(TEtP(OClO)] and [Fe(TPrP)(OClO)] are characteristic of the nearly pure S = 3/2 state, while the structural parameters for [Fe(TPrP)(THF)]ClO feature a pure intermediate-spin (S = 3/2) state, which are all consistent with EPR and magnetic data. It is clear from these studies that the ruffled conformation plays a significant role in affecting the extent of S = 3/2 character.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3633537 | PMC |
http://dx.doi.org/10.1142/S1088424612501362 | DOI Listing |
Molecules
January 2025
Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, 1111 Budapest, Hungary.
Butyl phenyl--phosphinate that is not available commercially was prepared from phenyl--phosphinic acid by three methods: by alkylating esterification (i), by microwave-assisted direct esterification (ii), and unexpectedly, by thermal esterification (iii). Considering the green aspects, selectivity and scalability, the thermal variation seemed to be optimal. However, there was need for prolonged heating.
View Article and Find Full Text PDFMolecules
January 2025
Institute for Organic Synthesis and Photoreactivity of the Italian National Research Council, Area della Ricerca di Bologna, Via P. Gobetti, 101, 40129 Bologna, Italy.
The utilization of the homogeneous ()-2-pyrrolidine-tetrazole organocatalyst (Ley catalyst) in the self-condensation of ethyl pyruvate and cross-aldol reactions of ethyl pyruvate donor with non-enolizable pyruvate acceptors, namely the sterically hindered ethyl 3-methyl-2-oxobutyrate or the highly electrophilic methyl 3,3,3-trifluoropyruvate, is described as the key enantioselective step toward the synthesis of the corresponding biologically relevant isotetronic acids featuring a quaternary carbon functionalized with ester and alkyl groups. The transition from homogeneous to heterogeneous flow conditions is also investigated, detailing the fabrication and operation of packed-bed reactors filled with a silica-supported version of the pyrrolidine-tetrazole catalyst (SBA-15 as the matrix).
View Article and Find Full Text PDFMutat Res Genet Toxicol Environ Mutagen
January 2025
Free University of Berlin, Institute of Pharmacy, Pharmacology and Toxicology, Berlin, Germany; BASF SE, Experimental Toxicology and Ecology, Ludwigshafen am Rhein, Germany.
Mutagenicity testing is a component of the hazard assessment of industrial chemicals, biocides, and pesticides. Mutations induced by test substances can be detected by in vitro and in vivo methods that have been adopted as OECD Test Guidelines. One of these in vivo methods is the Transgenic Rodent Assay (TGRA), OECD test guideline no.
View Article and Find Full Text PDFDalton Trans
January 2025
Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, China.
Five new alkyl zinc complexes supported by different formylfluorenimide ligands were prepared and characterized. Complex 1 was obtained by the reaction of 9-[N(CH)-Cy-NCH]Fl (Cy = 2-cyclohexyl) (Fl = fluorenylL1 with diethylzinc (ZnEt) in tetrahydrofuran. Reacting 9-[2-pyridyl-CH-NCH]Fl L2 with ZnEt in tetrahydrofuran yielded complex 2.
View Article and Find Full Text PDFBioorg Chem
January 2025
Chemistry Department, Faculty of Science, Arish University, Al-Arish 45511, Egypt.
The search for new anticancer compounds is a major focus for researchers in chemistry, biology, and medicine. Cancer affects people of all ages and regions, with rising incidence rates. It does not discriminate by age or gender, making it a significant threat to humanity.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!