نتایج جستجو برای: dithiol

تعداد نتایج: 906  

2008
Nyasha Kanganga Kent R. Mann Daron E. Janzen

In the title compound, (C(16)H(36)N)(2)[Pt(C(4)N(2)S(2))(2)], the Pt(II) center adopts a distorted square-planar geometry due to the 4-membered chelate rings formed by coordination to the S atoms of the 1,1-dicyano-ethyl-ene-2,2-dithiol-ate (i-mnt) ligands [bite angle 74.35 (4)°]. The bond distances in the coordinated i-mnt ligands indicate some delocalization of the π-system.

2008
Nyasha Kanganga Kent R. Mann Daron E. Janzen

In the title compound, (C(16)H(36)N)(2)[Pd(C(4)N(2)S(2))(2)], the Pd(II) center adopts a distorted square-planar geometry due to the four-membered chelate rings formed by coordination of the 2,2-dicyano-ethyl-ene-1,1-dithiol-ate (i-mnt) ligands [bite angle 75.0159 (17)°]. The bond distances in the coordinated i-mnt ligands indicate some delocalization of the π-system.

2008
Jian-Feng Liu Xiao-Lan Liu Yong-Hong Liu

Mol-ecules of the title compound, C(18)H(16)N(2)S(2), exist as the (2E, 1'Z)-isomer. The 1,3-dithiol-ane ring has an envelope conformation; the atoms of the C-C bond are disordered over two positions with occupancies of 0.47 (7) and 0.53 (7). The structure exhibits inter-molecular C-H⋯S and C-H⋯π(arene) hydrogen bonds.

2012
Guoquan Zhou Xinzhi Chen

In the title compound, C(8)H(5)NOS(2), the non-H atoms are approximately coplanar [maxium deviation = 0.060 (3) Å]. The dihedral angle between the least-squares planes of the pyridine and 1,3-dithiol-2-one rings is 5.96 (17)°. The crystal packing is stabilized by weak inter-molecular C-H⋯O hydrogen bonds and by an S⋯S close contact [3.510 (5) Å].

Journal: :Biochemical Society transactions 2005
S Dias-Gunasekara A M Benham

The ER (endoplasmic reticulum) is the site of protein folding for all eukaryotic secreted and plasma membrane proteins. Disulphide bonds are formed in many of these proteins through a dithiol-disulphide exchange chain comprising two types of protein catalysts: PDI (protein disulphide-isomerase) and ERO (ER oxidoreductase) proteins. This review will examine what we know about ERO function, and w...

Journal: :Environmental science and pollution research international 1998
R Haas

Ethylarsine dichloride was used during WW I as a chemical warfare agent. Residues of this chemical warfare agent and its metabolites are still present today and continue to contaminate soil and water. A gas Chromatographic method for the detection and determination of ethylarsine dichloride is shown. Six dithiols were tested as possible derivatization reagents for ethylarsine dichloride. With s...

2006
Wafaa M. Abdou Maha D. Khidre

Reactions of 5-phenyl-3(3H)-thioxo-1,2,4-dithiazole (1) with unsaturated and active phosphonium salts as well as with phosphonates, at r. t. and under the effect of basic catalysis, afforded mainly 1,3,5dithiazines 5, 12, 17a, 17b, 23a or 23b. Substituted 1,3-dithiol 7 and 1,3-thiazoles 13, 19a, 19b, 22a and 22b were isolated as by-products. 1,3,5-Dithiazine products showed pharmacological pote...

2008
Bang-Tun Zhao Jing-Jing Ding Gui-Rong Qu

The title compound, C(6)H(5)NS(4), consists of a planar 2-thioxo-1,3-dithiol-4-ylsulfanyl unit [maximum deviation from the ring plane = 0.0325 (2) Å], with a cyano-ethyl-sulfanyl substituent in the 4-position. In the crystal structure, weak inter-molecular C-H⋯S hydrogen bonds together with S⋯N inter-actions [3.260 (5) Å] form two-dimensional layers in the bc plane.

Journal: :Organic letters 2003
Matthew J Gaunt Alan S Jessiman Paolo Orsini Huw R Tanner David F Hook Steven V Ley

The synthesis of the C-1-C-28 ABCD fragment of spongistatin is described. Anti-selective boron-mediated aldol coupling of a CD spiroketal ketone fragment to an AB spiroketal aldehyde unit forms the desired C1-C28 advanced intermediate. Other features include the double conjugate addition of a dithiol to an ynone to generate the key beta-keto-dithiane unit required for the synthesis of the AB sp...

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