Thermal behaviour of a number of organomercury(II) complexes of the type, p-XC6H4HgCl(L-1) (I), p-XC6H4HgCl3(L-2) (II), p-XC6H4HgL3 (III) and p-XC6H4HgL4 (IV) [L-1=isoniazid, L-2=theobromine, L-3=phenyldithiocarbamate, L-4=p-nitrophenyldithiocarbamate; X=Me, MeO, NO2] has been investigated. From TG curves, the order and activation energy of the thermal decomposition reaction have been elucidated. The variation of the activation energy has been correlated with the nature of the substituent on the phenyl ring. The heat of reaction has been elucidated from DSC or DTA studies. The fragmentation pattern has been analysed on the basis of mass spectra.
Abstract Organomercury(II) complexes involving 6-thioguanine of the type p -XC 6 H 4 HgL ( I ) (LH = 6-thioguanine; X = Me, MeO, NO 2 ) have been synthesized. Spectral studies (IR and UV) indicate that the 6-thioguanine moiety acts as a bidentate group. From thermogravimetric (TG) curves, the order, activation energy and apparent activation entropy of the thermal decomposition reaction have been elucidated
摘要 已经合成了涉及 p -XC 6 H 4 HgL ( I ) 型 6-硫鸟嘌呤的有机汞 (II) 配合物(LH = 6-硫鸟嘌呤;X = Me、MeO、NO 2 )。光谱研究(IR 和 UV)表明 6-硫鸟嘌呤部分充当双齿基团。从热重(TG)曲线可以阐明热分解反应的阶次、活化能和表观活化熵。活化能的变化与苯环上取代基的性质有关。反应热是从差示扫描量热 (DSC) 研究中获得的。
Electron transfer mechanism in lithium aluminium hydride reduction of organomercuric halides
作者:P.R. Singh、R.K. Khanna
DOI:10.1016/s0040-4039(00)81669-x
日期:1983.1
A new electron transfer free radical mechanism has been proposed for the reduction of a few organomercuric halides with LiAlH4. Symmetrization of arylmercuric halides in these reactions has been observed for the first time.
Rearrangement and catalysis in the Seyferth reaction
作者:Joseph B. Lambert、Richard J. Bosch、Paul H. Mueller、Keiji Kobayashi
DOI:10.1021/ja00324a029
日期:1984.6
Le reactif de Seyferth C 6 H 5 HgCBr 3 reagit avec le trans-dichloro-1,2 ethylene pour donner 2 produits principaux, le trans-dibromo-1,1 dichloro-2,3 cyclopropane et le dibromo-1,1 dichloro-3,3 propene. Mecanisme
Le reactif de Seyferth C 6 H 5 HgCBr 3 regit avec le trans-dichloro-1,2 ethylene pour donner 2 produits principaux, le trans-dibromo-1,1 dichloro-2,3 cyclopropane et le dibromo-1,1 dichloro- 3,3丙烯。机制
Synthesis of hexaalkyl(aryl)distannanes and their reaction with organic halides under conditions of catalysis by palladium complexes
作者:N. A. Bumagin、Yu. V. Gulevich、I. P. Beletskaya
DOI:10.1007/bf01141722
日期:1984.5
Phenyl participation in the cleavage of .beta.-phenethyl-palladium bonds by cupric chloride