68-05-3Relevant articles and documents
A new member of tetranuclear dinitrosyl iron complexes (DNICs) with 2-mercaptothiazoline ligand: Synthesis, structure and properties
Chen, Chien-Hong,Wang, Jheng-Hong,Huang, Jing-Yi,Hsieh, Chung-Hung
, p. 2217 - 2227 (2014)
A new tetranuclear dinitrosyliron complex [(μ-SC3H 4SN)Fe(NO)2]4 (2), each of a Fe center coordinated with two S or two N, was prepared by CO replacement from the reduced precursor (CO)2Fe(NO)2 with 1 equiv of HSC 3H4SN (2-mercaptothiazoline) in the presence of O 2(g). The structure of 2 is similar to [(Imid-iPr)Fe(NO) 2]4 (Imid-iPr = 2-isopropylimidazole) (Hess et al. J Am Chem Soc 133:20426-20434, 2011), and both complexes comprise a quadrilateral plane of irons with corresponding ligands, SC3H4SN - or Imid-iPr-, bridging the edges and two nitrosyl ligands capping the irons at the corners. An additional equiv of SC 3H4SN- was added to 2, which results in the mononuclear {Fe(NO)2}9 (SC3H 4SN)2Fe(NO) 2 - (3), in the manner of N bound-[SC3H4SN]. Reaction of (TMEDA)IFe(NO) 2 (TMEDA = tetramethylethylenediamine) and complex 3 leads to the formation of complex 2. Dinuclear complex [(μ-C5H 7N2)Fe(NO)2]2 (4) can be synthesized by the ligand displacement of SC3H4SN- to C5H7N2 - (3,5-dimethylpyrazolate) of 2 (Chong et al. Can J Chem 57:3119-3125, 1979). Complexes 2-4 were characterized by IR and UV-Vis. The molecular structures of 2 and 3 were determined by X-ray single crystal diffraction.
PRESSURE AND SOLVENT EFFECTS ON THE KINETICS OF A MENSHUTKIN REACTION IN ALIPHATIC ALCOHOLS
Viana, Cesar A. N.,Calado, Antonio R. T.,Pinherio, Lidia M. V.
, p. 63 - 70 (1995)
The kinetics of the Menshutkin reaction between triethylamine and iodomethane was studied at 313 K in seven primary and secondary alcanols.An accurate conductometric method was employed to obtain second-order rate constants at pressures of 0.1-200 MPa.Volumes and isothermal compressions of activation were calculated by different model-based equations which are compared.Activation volumes at 0.1 MPa are in the range -26 to -33 cm3mol-1.Procedures for dissecting intra- and intermolecular contributions to the volume of activation are discussed.A clear dependence of model parameters on the solvent volumetric properties was found.
An unusual Michael addition-dealkylation or elimination via the reaction of tertiary or secondary amines with a (Z)-iodoacrylate
Maw, Graham,Thirsk, Carl,Whiting, Andrew
, p. 8387 - 8390 (2007/10/03)
A series of (E)-ammonium or amino acrylates have been prepared via the Michael addition of methyl (Z)-iodoacrylate and several secondary and tertiary alkylamines. Tertiary amines undergo concomitant addition-dealkylation, almost quantitatively producing (
