Detail of "533-98-2"

Reference

Transition metal complexes with sulfur ligands

Transition metal complexes with sulfur ligands. LXV. Diastereospecific alkylation of [Mo(NO)2('S2')2]2- to chiral [Mo(NO)2('RS4')] complexes with chirotopic and prostereogenic Mo-centers. Sellmann, Dieter; Grasser, Franz; Knoch, Falk; Moll, Matthias (Inst. Anorg. Chem. II, Univ. Erlangen-Nuernberg, Erlangen D-8520, Germany). Z. Naturforsch., B: Chem. Sci., 46(10), 1343-8 (German) 1991. CODEN: ZNBSEN. ISSN: 0932-0776.Several substances with their cas registry numbers 96398-37-7 and 533-98-2 may be metioned in this study. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) Section cross-reference(s): 75 To investigate how chirotopicity and stereogenicity of metal centers influence the enantioselectivity of metal centered reactions the stereogenic properties of metal centers in chiral complexes have to be varied without changing their electronic character. Diastereospecific alkylation of [Mo(NO)2('S2')2]2- ('S2'H2 = 1,2-benzenedithiol) by racemic 1,2-dibromopropane and 1,2-dibromobutane yields [Mo(NO)2('MeS4')] and [Mo(NO)2('EtS4')] ['RS4'H2 = 1,2-bis(2-mercaptophenylthio)alkane] that differ from the parent compd. [Mo(NO)2('S4')] ['S4'H2 = 1,2-bis(2-mercaptophenylthio)ethane] with respect to the stereogenicity of the metal center and allow further inther investigations of the question raised above. Crystals of [Mo(NO)2('MeS4')] are monoclinic, space group P21/n, a 1259.2(11), b 822.4(3), c 1854.6(12) pm, b 109.92(5)°, Z = 4, R = 0.064, Rw = 0.058. [Mo(NO)2('RS4')] (R = Me, Et) were characterized by IR, mass, and NMR (1H, 13C, 14N, 95Mo) spectrometries. .

Isotopic distribution of the polyhaloorganics formed from the halogenation of haloorganics with isotopically enriched halogens

Isotopic distribution of the polyhaloorganics formed from the halogenation of haloorganics with isotopically enriched halogens. Tanner, D. D.; Ruo, T. S.; Kosugi, J. (Dep. 533-98-2 and 62127-47-3 are cas registry numbers. These chemicals are also mentioned in this article. Chem., Univ. Alberta, Edmonton T6G 2G2, Can.). Org. Mass Spectrom., 18(11), 462-5 (English) 1983. CODEN: ORMSBG. ISSN: 0030-493X. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) Section cross-reference(s): 23, 73 A method is reported for detg. the mechanism of halogenation of haloorg. compds. by halogenation using isotopically enriched halogens and detn. of the isotopic distribution in the product by mass spectroscopy. The results allow differentiation between a substitution path and an elimination-readdn. mechanism. The bromination of 1- and 2-bromobutanes is used as an example of the method. .