Binuclear, nitrogen-bridged complexes of disulphurdinitride, [M(S₂N₂)(PPh₃)]₂·CH₂Cl₂(M = Pd, Pt)

Abstract

Reaction of tetrasul p hu rtetran itride with t ridtrip henyl phosp hi ne) plati nu m (0) or tetra kis( trip henylphosphine)palladium(O) gives [M(S2N2)(PPh3)I2-CH2Cl2; the X-ray structure of the platinum compound shows the [Pt(S2N2)I2 unit to be planar: the S2N22-group acts as a bidentate and bridging ligand with the platinum atoms bring bridged by nitrogen to form a four membered Pt2N2 ring.

Bis(μ-disulfur dinitrido)bis[diphenyltin(IV)]

“…The geometry is very similar to that of [n-Bu 2 SnS 2 N 2 ] 2 (Aucott et al 2002). Comparison of the S-N bond lengths with platinum phosphine substituted complexes containing the S 2 N 2 group reveals that the S-N bond lengths have a different motif to the PMe 2 Ph complex (Jones et al 1988) and one of the published PPh 3 complexes (Chivers et al 1986), but are comparable with most others systems containing the disulfurdinitrido anion (Jones et al 1985a, Bates et al 1986.…”

“…For related literature, see: Aucott et al (2002Aucott et al ( , 2003; Bates et al (1986); Chivers et al (1986); Jones et al (1985aJones et al ( ,b, 1986Jones et al ( , 1987Jones et al ( , 1988; ; Read et al (2007); Slawin & Woollins (2006).…”

Improvement of Yarrowia lipolytica Lipase Enantioselectivity by Using Mutagenesis Targeted to the Substrate Binding Site

“…The plasmids were digested with NotI and used for transformation of strain JMY1212 (MATA ura3-302 leu2-270-LEU2-zeta xpr2-322 Dlip2 Dlip7D lip8) [26] by the lithium acetate method as A C H T U N G T R E N N U N G described previously. [8] Erlenmeyer flasks (500 mL) containing medium Y 1 T 2 O 2 (50 mL total) made of yeast extract (10 g L ) were subjected to sonication three times for 1 min each on ice for emulsification purposes. Cells were incubated at 28 8C for 24 h until complete oleic acid consumption.…”

Enzymatic kinetic resolution of tropic acid

“…Poly-3-hydroxyacids are of great interest for bioerodable and biodegradable polymers, 1 while the enantiomeric ratio of the monomers has a dramatic effect on the crystallinity and solubility of the resulting polymer. 2,3 The enzymatic kinetic resolution of 2-arylpropionic acids, mainly ibuprofen, [4][5][6][7][8][9][10][11][12] and related structures, [13][14][15][16][17][18][19] has been studied intensively, but any literature on the enzymatic kinetic resolutions of 2-aryl-3-hydroxycompounds such as tropic acid, is scarce. Only recently, was an enzymatic kinetic resolution of this hydroxy acid utilising lipase PS (Pseudomonas cepacia lipase) to target the primary alcohol reported.…”