The toxicity of organic sulphides to the eggs and larvae of the glasshouse red spider mite. I.—SS′-disubstituted alkane-αω-dithiols
作者:R. F. Brookes、J. E. Cranham、W. A. W. Cummings、D. Greenwood、B. S. Jackson、H. A. Stevenson
DOI:10.1002/jsfa.2740080106
日期:1957.1
A laboratory test method for assessing the activity of chemicals against the eggs and young mites of the glasshouseredspider (Tetranychus telarius L.) is described. The results given by a series of SS′-disubstituted alkane-αω-dithiols using this test method are tabulated and discussed.
The combination of flexible neutral organic tectons based on two pyridines interconnected by a thioether or thioester type spacer with an inorganic ZnSiF6 pillar leads to the formation of 2-D coordination networks and the packing of the latter generates crystals offering controllable tubular channels with imposed orientation along the pillar axis.
Self-Assembly of Palladium-Based Macrocycles with N-Heterocyclic Carbene as the “Corner” Ligand
作者:Xu-Qiong Xiao、Ai-Quan Jia、Yue-Jian Lin、Guo-Xin Jin
DOI:10.1021/om100040g
日期:2010.11.8
Metallacyclic complexes [(C-Mes-C-meth)Pd(L)](2)(OTf)(4) (C-Mes-C-meth = 1,1'-dimesityl-3,3'-methylenediimidazolin-2,2'-diylidene; L = 4,4'-dithiodipyridine (L-1) (5), 1,2-bis(4-pyridylthio)ethane (L-2) (6), 1,3-bis(4-pyridylthio)propane (L-3) (7)) were obtained by the self-assembly of [(C-Mes-C-meth)-Pd(CH3CN)(2)](OTf)(2) with flexible pyridine-based ligands L-1-L-3 in high yields. The reaction of [(C-Mes-C-meth)Pd(CH3CN)(2)](OTf)(2) with a rigid pyrazine ligand led to the formation of mononuclear [(C-Mes-C-meth)Pd(pyrazine)(2)](OTf)(2) (4), which can be ascribed to the effect of the steric bulk of the substituent. Complexes 4-6 have been well characterized by elemental analyses, H-1 NMR and IR spectra, and single-crystal molecular structure analysis.
Syntheses and Reactions of Half-Sandwich Iridium, Rhodium, and Ruthenium Metallacycles Containing 4-Pyridyl Dithioether Ligands†Dedicated to Professor Kazuyuki Tatsumi on the occasion of his 60th birthday.
作者:Ai-Quan Jia、Ying-Feng Han、Yue-Jian Lin、Guo-Xin Jin
DOI:10.1021/om900921g
日期:2010.1.11
Metallacyclic complexes [CP4*Ir-4(mu-L')(2)(mu-L)(2)](OTf)(4) (2a, L' = 6,11-dioxy-5,12-naphthacencdione (dhnq(2-)); L = 4-pyridyl dithioether), [CP2*Rh-2(mu-L')(mu-L)](OTf)(2) (3b), and [(p-cymene)(2)Ru-2-(mu-L')(mu-L)](OTf)(2) (3c) were obtained by the reactions of CP2*M-2(mu-L')Cl-2 (M = Ir (1a), Rh (1b)) or (p-cymene)(2)Ru-2(mu-L')Cl-2 (1c) with a flexible bipyridine-based ligand (L) in the presence of AgOTf (OTf = CF3SO3). Treatments of tetranuclear complex 2a and binuclear complexes 3b and 3c with [Cp*IrCl](2)(OTf)(2) or [Cp*RhCl](2)(OTf)(2) gave the homotrinuclear complexes [Cp-3*Ir-3(mu-L')(mu-L)Cl]-(OTf)(3) (4a) and [CP3*Rh-3(mu-L')(mu-L)Cl](OTf)(3) (4b) and heterotrinuclear complexes [CP3*Ir2Rh-(mu-L')(mu-L)Cl](OTf)(3) (4c), [CP3*Rh2Ir(mu-L')(mu-L)Cl](OTf)(3) (4d), [Cp*)-p-cymene)(2)Ru2Ir(mu.-L')-(mu-L)Cl](OTf)(3) (4e), and [Cp*)-p-cymene)(2)Ru2Rh(mu-L')(mu-L)Cl](OTf)(3) (4f), respectively. The flexible tetranuclear complex 2a exhibited different conformations with different guest solvents. The complexes were characterized by IR, H-1 NMR spectroscopy, and elemental analysis. In addition, X-ray Structure analyses Were Performed oil ligand L and complexes 2a, 3c, 4a, and 4e.