Manganese II chlorid

Maltodextrin 182 Maltose 164,165, 181-184 Mandelin s reagent 426 Manganese cations 144 Manganese(II) chloride reagent 333 Mannitol 409,410 Marking the front 132 Marmesin 67 Marquis reaction 352 Marquis reagent 299 Matacil 107... 

Lead chloride, 4112 Lead(II) fluoride, 4329 Lead tetrachloride, 4172 Magnesium chloride, 4081 Manganese(II) chloride, 4085... 

The radiation nozzle system has been used for studying a series of transition metal dihalide molecules. Typical molecular intensity distributions are shown in Fig. 4 for manganese(II) chloride. The quickly damping character of the intensity distribution relates to the large-amplitude motion in the molecule due to the high temperature ( 750 °C) conditions of the experiment. Fig. 5 shows the radial distribution from the same experiment which also well demonstrates the straightforward manner of structure determination of such simple molecules. 

F. 4. Experimental (dots) and theoretical (full line) molecailar intensities of manganese (II) chloride l... 

Fig. 7. H water proton relaxivity i.e., the nuclear spin-lattice relaxation rate per mM of metal, plotted as a function of the magnetic field strength expressed as the proton Larmor frequency for aqueous solutions of manganese(H) and iron(HI) ions at 298 K. (A) 0.10 mM manganese(II) chloride in 2.80 M perchloric acid (B) 0.1 mM aqueous manganese(H) chloride at pH 6.6 (C) 0.5 mM iron(HI) perchlorate in 2.80 M perchloric acid (D) 0.5 mM iron(IH) perchlorate in water at pH 3.1 (F) 2.0 mM Fe(HI) in 2.0 M ammonium fluoride at pH 7, which causes a distribution of species dominated by [FeFe]"-.

Manganese(II) chloride forms adducts with ammonia, hydroxylamine and many other nitrogen compounds. Many adducts are stable at ordinary temperatures. Examples are MnCb BNHs and MnCE 2NH2OH. 

Manganese(II) hydroxide is obtained as a white precipitate by adding a solution of sodium or potassium hydroxide to a solution of manganese(II) salt, such as manganese(II) chloride ... 

Treatment with concentrated hydrochloric acid forms manganese(IV) chloride which readily decomposes to manganese(lll) chloride and manganese(II) chloride, successively liberating chlorine ... 

Pour 30 ml of a 35% sodium hydroxide solution into a 250-ml beaker provided with a mechanical mixer, a thermometer, and a dropping funnel reaching almost to the bottom of the beaker. Cool the beaker with a mixture of ice and sodium chloride, switch on the mixer, and introduce a catalyst—a solution of 0.3 g of manganese(II) sulphate pentahydrate or 0.1 g of manganese(II) chloride tetrahydrate in 1 ml of water. Cool the solution to 0 °C and introduce 7 g of urea into it. Lower the temperature to 5-7 °C below zero and gradually add 63 ml of the filtered sodium hypochlorite solution cooled to the same temperature from the dropping funnel. The temperature even at the end of the reaction must not rise above 10 °C. 

Manganese(II) Hydroxide. 1. Take manganese(II) chloride as the starting substance, prepare the hydroxide, study its properties, namely, its reaction with oxygen, air, acids, and alkalies. 

Several studies have been made of the effect of added metal ions on the pinacol/alcohol ratio. Addition of antimony(m) chloride in catalytic amounts changes the product of the electrochemical reduction of acetophenone in acidic alcohol at a lead electrode from the pinacol in the absence of added metal salt to the secondary alcohol in its presence53. Antimony metal was suspected to be an intermediate in the reduction. Conversely, addition of Sm(in) chloride to DMF solutions of aromatic aldehydes and ketones54 and manganese(II) chloride to DMF solutions of hindered aromatic ketones55 results in selective formation of pinacols in excellent yields. When considering these results one should keep in mind the fact that aromatic ketones tend to form pinacols in DMF even in the absence of added metal ions1,29,45. 

The synthesis of 3-hydroxy-2-methyl esters and amides in a stereoselective manner is a challenge which needs to be met due to the prevalence of these moieties in natural products201. This has been accomplished by using sodium borohydride, catalyzed by manganese(II) chloride or by tetrabutylammonium borohydride (equation 52)202,203. 

Magnesium methyl carbonate, 310 Malic acid, 135 Malyngolide, 224, 316 Manganese(II) chloride-lithium aluminum hydride, 310 Manganese dioxide, 311 Manicone, 121... 

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