Methylmercury compounds are possibly carcinogenic to humans (Group 2B). There is sufficient evidence in experimental animals for the carcinogenicity of methylmercury chloride. /Methylmercury compounds/
Neurotoxin - Other CNS neurotoxin
Nephrotoxin - The chemical is potentially toxic to the kidneys in the occupational setting.
Reproductive Toxin - A chemical that is toxic to the reproductive system, including defects in the progeny and injury to male or female reproductive function. Reproductive toxicity includes developmental effects. See Guidelines for Reproductive Toxicity Risk Assessment.
来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
毒理性
毒性数据
LC50 (小鼠) = 80 毫克/立方米/4小时
LC50 (mice) = 80 mg/m3/4h
来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Adult mallards (Anas platyrhynchos) were fed ... a diet 10 ppm mercury plus 10 ppm selenium. ... When the diet contained 10 ppm selenium in addition to the 10 ppm mercury, none of 12 males became sick. In contrast to the protective effect of selenium against mercury poisoning in males, selenium plus mercury was worse than selenium or mercury alone for some measurements of reproductive success. Both selenium and mercury lowered duckling production through reductions in hatching success and survival of ducklings, but the combination of mercury plus selenium was worse than either mercury or selenium alone. Controls produced an average of 7.6 young per female ... and females fed both mercury and selenium produced 0.2 young. Teratogenic effects also were worse for the combined mercury plus selenium treatment; deformities were recorded in 6.1% of the embryos of controls, 16.4% for those fed methylmercury chloride, 36.2% for those fed selenomethionine, and 73.4% for those fed methylmercury chloride and selenomethionine. The presence of methylmercury in the diet greatly enhanced the storage of selenium in tissues. The livers of males fed 10 ppm selenium contained a mean of 9.6 ppm selenium, whereas the livers of males fed 10 ppm selenium plus 10 ppm mercury contained a mean of 114 ppm selenium. However, selenium did not enhance the storage of mercury. The results show that mercury and selenium may be antagonistic to each other for adults and synergistic to young, even within the same experiment.
Groups of 10 /male ICR/ mice were given methylmercury chloride at a concentration of 40 mg/g of diet, with or without melatonin at a concentration of 20 mg/mL in drinking-water, for 5 weeks. Greater numbers of animals treated with methylmercury alone showed signs of neurotoxicity (abnormal righting reflex, staggering gait, fallen posture) and a higher rate of mortality after 35 days of treatment than the group receiving methylmercury plus melatonin. It was suggested that the anti-oxidative capacity of melatonin reduces the toxicity of methylmercury ...
In the brain of 21-day-old neonatal rats that had been previously exposed to a gavage dose of 6.4 mg Hg/kg as methylmercury chloride in utero, the cerebellum had the highest mercury concentrations and the brainstem had the lowest.
Histochemical localization (by silver amplification) of mercury showed a different distribution. The first deposits of mercury in rat brain became apparent 10 days after exposure to 16 mg/L of methylmercury chloride in drinking-water. The deposits were found initially in the brain stem, then in the cerebral cortex and supraoptic nucleus, and finally in the cerebellum and thalamus. After 20 days, the deposits in the cerebellar cortex were restricted to Purkinje cells and Golgi epithelial cells and those in the spinal cord to the anterior motor neurons; the granule cells of the cerebellar cortex remained unstained ... Similar staining was seen after daily intraperitoneal administration of methylmercury chloride at 0.16-0.8 mg/kg bw ... As the cerebellar granule cells are target cells for methylmercury ..., the absence of staining indicates that only demethylated mercury can be detected with the silver amplification method. When the cortex of the calcarine sulcus of macaque monkeys was stained by the same method, large deposits were seen in the astrocytes and microglia after six months, whereas staining of neurons appeared later and remained faint even after 18 months ... In squirrel monkeys given weekly doses of (3)H-methylmercury, the amount in protein increased, and it was found in damaged but not in undamaged neurons.
Except in rats, the brain:blood ratios were greater than 1 in all species tested ... The ratio was consistently high in monkeys, and in all species it was higher after multiple dosing than after the administration of a single dose. Differences in strain and sex affected the concentration of mercury in blood of mice more than that in brain. The concentration in the brain was higher in female than in male mice. A similar sex difference in brain mercury concentrations, but without a difference in the brain:blood ratio, was seen in rats. Six to 12 days after four daily oral doses of methylmercury chloride at 8 mg/kg bw, the concentration of mercury in brain was 8.8 ug/g in female and 6.7 ug/g in male rats ... In heavily exposed squirrel monkeys, the brain stem had approximately the same concentration as the cerebellum and most of the cerebral regions, with the exception of the occipital lobe, which had the highest concentration ... The thalamus had somewhat higher concentrations than the occipital pole ... In pigs, the concentrations in the cerebrum, cerebellum, and optic nerve differed only slightly, and all had higher concentrations than the spinal cord ... In guinea-pigs, the cerebellum had the lowest concentration ... In rats, the highest concentration was found in the spinal roots and ganglia, closely followed by the cerebral cortex and the cerebellum ..., but the concentrations in the cerebellum, medulla oblongata, and various areas of the cerebrum differed only slightly.
Mercury dynamics in the blood and feathers of captive great skuas, Catharacta skua, were monitored over 56 weeks. Prior to the onset of molt, mercury intake was solely from their maintenance ration of sprats, Sprattus sprattus. For the first half of molt, in addition to mercury intake from sprats, birds were fed different doses of methylmercuric chloride weekly for 20 weeks. During the second half of molt, dosing was stopped and mercury intake was solely from sprats. Blood was sampled throughout the study and feather growth was monitored. Prior to the onset of molt, mercury concentrations increased over the first 51 to 71 days and appeared to level off after this period. Repeated dosing models based on mammalian pharmacokinetics were, in general, too simplistic to be applicable to the birds in the study. During molt, the elimination of mercury from the blood is probably best described by a three-compartment model. Mercury concentrations in feathers were significantly correlated with those in blood at the time of their growth, suggesting that blood and feathers reflect mercury intake over the same time period. Individuals varied in their ability to excrete ingested mercury into the feathers.
1.周国泰,化学危险品安全技术全书,化学工业出版社,1997 2.国家环保局有毒化学品管理办公室、北京化工研究院合编,化学品毒性法规环境数据手册,中国环境科学出版社.1992 3.Canadian Centre for Occupational Health and Safety,CHEMINFO Database.1998 4.Canadian Centre for Occupational Health and Safety, RTECS Database, 1989
Synthesis, characterization, and C–H activation reactions of novel organometallic O-donor ligated Rh(III) complexes
作者:William J. Tenn、Brian L. Conley、Steven M. Bischof、Roy A. Periana
DOI:10.1016/j.jorganchem.2010.09.021
日期:2011.1
The synthesis and characterization of the O-donor ligated, air and water stable organometallic complexes trans- (2), and cis-(hfac-O,O)2Rh(CH3)(py) (3), trans-(hfac-O,O)2Rh(C6H5)(py) (4), cis-(hfac-O,O)2Rh(C6H5)(py) (5), and cis-(hfac-O,O)2Rh(Mes)(py) (6) (where hfac-O,O = κ2-O,O-1,1,1,5,5,5-hexafluoroacetylacetonato) are reported. These compounds are analogues to the O-donor iridium complexes that
O-供体连接的,对空气和水稳定的有机金属配合物反式-(2)和顺式-(hFAc-O,O)2 Rh(CH 3)(py)(3),反式-(hFAc )的合成与表征-O,O)2 Rh(C 6 H 5)(py)(4),顺式(hFAc-O,O)2 Rh(C 6 H 5)(py)(5)和顺式(hFAc- O,O)2的Rh(MES)(PY)(6)(其中HFAC-O,O =κ 2报道了-O,O-1,1,1,1,5,5,5-六氟乙酰丙酮。这些化合物是O-供体铱配合物的类似物,O-供体铱配合物是加氢芳基化反应和CH-H活化反应的活性催化剂,以及我们最近报道的双乙酰丙酮铑配合物。的反式-配合物2所经历的定量反式到顺式异构化在环己烷中,以形成3,其激活的C-H键在两个苯和均三甲苯形成化合物5和6分别。所有这些化合物对空气和水都是稳定的,不会导致分解产物。复杂5 促进苯进行苯乙烯的加氢芳基化反应,生成二氢sti。
Microwave spectrum of methylmercury chloride: gas-phase determination of the electric dipole moment and 201Hg quadrupole coupling
作者:Christopher A. Rego、A.Peter Cox
DOI:10.1016/0009-2614(87)87349-9
日期:1987.9
The nuclear quadrupolecoupling constant of 201Hg (I = 32) has been determined for CH3HgCl in the vapour by microwave spectroscopy. A value of eQq(201Hg) = −1025(3) MHz, along the axis of the symmetric top, has been determined for the vibrational ground state. An initial determination of the quadrupolecoupling constant was made possible by radiofrequency pumping of the l-type doublets of the lowest
Reactions of hexafluorobut-2-yne with alkylgold(<scp>I</scp>) complexes. Properties of intermediate binuclear gold(<scp>I</scp>)–gold(<scp>III</scp>) complexes
作者:Antony Johnson、Richard J. Puddephatt
DOI:10.1039/dt9780000980
日期:——
Reactions of alkylgold(I) complexes [AuRL](R = Me, L = PMe3, PMe2Ph, or PMePh2; R = Et, L = PMePh2) with hexafluorobut-2-yne give first the mixed-oxidation-state complexes [LAu(F3C)CC(CF3)}AuR2L], which react further to give either the binuclear gold(I) complexes [LAu(F3C)CC(CF3)}AuL] or the products of cis in-sertion of the alkyne into the original Au–C bond, [AuL(F3C) CCR (CF3)}]. The course of
Phenylselenolate mercury alkyl compounds, PhSeHgMe and PhSeHgEt: Molecular structures, protolytic Hg–C bond cleavage and phenylselenolate exchange
作者:Kevin Yurkerwich、Patrick J. Quinlivan、Yi Rong、Gerard Parkin
DOI:10.1016/j.poly.2015.06.007
日期:2016.1
phenylselenolate mercuryalkyl compounds, PhSeHgMe and PhSeHgEt, have been structurally characterized by X-ray diffraction, thereby demonstrating that both compounds are monomeric with approximately linear coordination geometries; the mercury centers do, nevertheless, exhibit secondary Hg***Se intermolecular interactions that serve to increase the coordination number in the solid state. The ethyl derivative, PhSeHgEt
(GSH) to form MeHgCys and MeHgSG complexes. Herein, it is reported that the N,N‐disubstituted benzimidazole‐based thione 1 containing a N−CH2CH2OH substituent converts MeHgCys and MeHgSG complexes to less toxic water‐soluble HgS nanoparticles (NPs) and releases the corresponding free thiols CysH and GSH from MeHgCys and MeHgSG, respectively, in solution by unusual ligand‐exchange reactions in phosphate