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Manganese acid chlorides

Mangani-. manganic, -chlorid, n. manganic chloride, manganese (III) chloride, -cyan-wasserstoffs ure, /. manganicyanic acid, cyanonianganic(III) acid. [Pg.288]

Acylation reactions can also be greatly improved in this way, with t-alkyl- or sec-alkyl-manganese reagents reacting with acid chlorides in excellent yields [123]. The related addition-elimination to 3-ethoxy-2-cyclohexenone is also improved, resulting after acidic aqueous workup in 3-methyl-2-cyclohexenone [125]. The perilla-ketone 126 was prepared in an improved yield using copper(I) catalysis (Scheme 2.58) [129]. [Pg.70]

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]"-. 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]"-.
Major constituents (greater than 5 mg/L) Minor constituents (O.Ol-lO.Omg/L) Selected trace constituents (less than 0.1 mg/L) Bicarbonate, calcium, carbonic acid, chloride, magnesium, silicon, sodium, sulfate Boron, carbonate, fluoride, iron, nitrate, potassium, strontium Aluminum, arsenic, barium, bromide, cadmium, chromium, cobalt, copper, gold, iodide, lead, Uthium, manganese, molybdenum, nickel, phosphate, radium, selenium, silver, tin, titanium, uranium, vanadium, zinc, zirconium... [Pg.26]

Manganese(Il) chloride is prepared by heating manganese(ll) oxide, manganese dioxide, manganese(ll) carbonate or manganese(ll) hydroxide with hydrochloric acid ... [Pg.545]

Manganese(ll) chloride is a by-product in the manufacture of chlorine from manganese dioxide and hydrochloric acid (the Weldon process). [Pg.545]

Alternatively, the compound may be prepared by neutralizing an aqueous solution of disodiummethylenebis(dithiocarbamate) (Nabam) with acetic acid followed by addition of manganese(ll) chloride solution. [Pg.547]

Treatment with concentrated hydrochloric acid forms manganese(IV) chloride which readily decomposes to manganese(lll) chloride and manganese(II) chloride, successively liberating chlorine ... [Pg.554]

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. [Pg.235]

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. [Pg.623]

Magnesium methyl carbonate, 310 Malic acid, 135 Malyngolide, 224, 316 Manganese(II) chloride-lithium aluminum hydride, 310 Manganese dioxide, 311 Manicone, 121... [Pg.336]

In other examples, compounds in which a metal atom is already coordinated in a molecule can be used as a comonomer in an addition polymerization. Two examples involve the ferrocenes discussed in Chapter 6. The vinyl ferrocene molecule is shown in 7.14, and a similar vinyl manganese complex in 7.15.30 An alternative approach involves condensation polymerization. For example, if the R group in the ferrocene unit shown in 7.16 contains a hydroxyl group, it can be copolymerized with a diacid chloride. If it is an acid chloride, it can be copolymerized with a diamine. (This type of polymer is called a heteroannular chain if only one of the rings in the repeat unit is in the backbone, the polymer is called homoannular.)7 Similarly, the titanium complex shown in 7.17 is copolymerized with diacids or diols.30 Numerous other examples involving ferrocenes are discussed in Chapter 6. [Pg.286]

The soluble metalloporphyrin-containing polymers are formed by the copolymerization of MM A or 4-VP with macrocyclic MCM — an interaction product of acrylic acid chloride with tetra-p-aminophenylporphyrinate acetate manganese [96]. Copolymers obtained by the radical copolymerization of acryloyl derivatives of cobalt phthalocyanine with 9-vinylcarbazole [97] should also be mentioned. [Pg.87]

You met organocopper reagents in Chapter 10 where you saw that they did conjugate additions to a,p-unsaturated carbonyl compounds. Other metals, such as cadmium or manganese, can also be used to make ketones from acid chlorides. [Pg.299]

This may be identified (a) by its odour (cautiously smell the vapour after removing the test-tube or small beaker from the flame) (b) by the formation of white fumes of ammonium chloride when a glass rod moistened with concentrated hydrochloric acid is held in the vapour (c) by its turning moistened red litmus paper blue or turmeric paper brown (d) by its ability to turn filter paper moistened with mercury(I) nitrate solution black (this is a very trustworthy test ) and (e) filter paper moistened with a solution of manganese(II) chloride and hydrogen peroxide gives a brown colour, due to the oxidation of manganese by the alkaline solution thus formed. [Pg.293]

To 2 ml of the soda extract add 1 ml concentrated hydrochloric acid and 2 ml of the manganese(II) chloride reagent. A brown (or black) colouration indicates the presence of nitrate, nitrite, hexacyanoferrate(III), chlorate, bromate, iodate, chromate or permanganate. A negative test indicates the absence of the above oxidizing agents except small amounts of nitrates and nitrites and of arsenate if reducing anions have been found, this test is inconclusive. [Pg.449]

Manganese(II) chloride (saturated in HC1). To 7 g manganese(II) chloride tetrahydrate, MnCl2.4H20, add 5 ml concentrated hydrochloric acid. Shake, allow to stand for 24 hours and use the clear, supernatant liquid for the tests. [Pg.578]

Until the advent of the methylene chloride-water solvent system the less reactive acid chlorides could be used in the aqueous method but the more reactive acid chlorides required the anhydrous hydrogen cyanide method. This latter method is still sometimes used - and in fact has been used with quinoline and the 2- and 3-carboxylic acid chlorides of methylcyclopentadienyl manganese tricarbonyl."... [Pg.5]


See other pages where Manganese acid chlorides is mentioned: [Pg.506]    [Pg.333]    [Pg.334]    [Pg.335]    [Pg.288]    [Pg.205]    [Pg.71]    [Pg.176]    [Pg.670]    [Pg.118]    [Pg.72]    [Pg.647]    [Pg.169]    [Pg.30]    [Pg.100]    [Pg.449]    [Pg.471]    [Pg.471]    [Pg.554]    [Pg.554]    [Pg.169]    [Pg.1153]    [Pg.130]    [Pg.594]    [Pg.92]   
See also in sourсe #XX -- [ Pg.308 , Pg.309 ]




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