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  • 1
    Electronic Resource
    Electronic Resource
    Studies in condensed phosphates. Part I. Sodium metaphosphates and their derivatives with calcium, barium, and zinc salts (1961)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 54 (1961), S. 613-620 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Derivatives with the formulas [Na4Ca(PO3)6]n, [Na4Ba(PO3)6]n, and [Na4Zn(PO3)6]n have been prepared by heating together mixtures of NaH2PO4.2H2O, CaO (or Ba(OH)2.-8H2O or ZnO), and (NH4)2HPO4 in the molar ratios of 4:1:2 at 700 and 800°C. for 1 hr. The number-average molecular weights of these derivatives have been measured by the endgroup titration method. Their conductance has been measured in aqueous solution of varying concentration, and their properties compared with those of Graham's salt (NaPO3)n prepared under similar conditions.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1961.1205416024
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  • 2
    Electronic Resource
    Electronic Resource
    Complex metaphosphate polymers (1962)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 58 (1962), S. 501-516 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The complexation reaction of the polymeric metaphosphate ions has been studied with copper, calcium, barium, zinc, lead, and iron ions by physicochemical measurements indicating the formation of complex derivatives of the type (NaxM1-x/aPO3)n where a is the valency of the metal ion complexed. It has been possible to synthesize a large number of derivatives for the first time by the reactions of the following type: The progress of the reaction has been studied on a Stanton Thermogravimetric balance and the properties (composition, viscosity, molecular weight, and conductivity) of the transparent glassy complex metaphosphates have been studied in detail throwing fresh light on Graham's salt itself as well as these new derivatives.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1962.1205816628
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  • 3
    Electronic Resource
    Electronic Resource
    Reactions of Ortho-esters of Titanium. II. Reactions of Benzoic Acid and Ethyl and Isopropyl Titanate (1959)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 8 (1959), S. 235-240 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The stepwise reaction between titanium alkoxides and benzoic acid has been investigated in detail. It has been shown that replacement of first two alkoxy groups of titanium alkoxide (Ti(OR)4; OR=OPri, or OEt) proceeds smoothly and the corresponding mono and di-benzoate derivatives, (C6H5COO)Ti(OR)3 and (C6H5COO)2Ti(OR)2, are formed quantitatively. The substitution of third alkoxy group proceeds slowly and the tri-benzoate derivative, (C6H5COO)3Ti(OR), is less stable decomposing into titanyl benzoate, (C6H5COO)2Ti=O, and corresponding ester, C6H5COOR. The course of reaction appears to be unaffected even in presence of excess benzoic acid (more than 4 moles). The reactions have been carried out in benzene medium and have been followed by estimating the alcohol removed in the azeotrope, analysis of products of reaction and isolation of esters produced as a result of decomposition of the tri-benzoate derivatives.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19590080314
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  • 4
    Electronic Resource
    Electronic Resource
    Studies in the Oxinate derivatives of Chromium (1961)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 12 (1961), S. 184-190 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Conditions for preparation of chromium (II) oxinate have been defined. The analysis of the product, as well as the conditions, under which it is precipitated, confirm that the product is initially different from chromium (III) oxinate.The redissolution of chromium (II) oxinate in hydrochloric acid gives a solution with no reducing properties. It has been shown that oxine itself in acidic solutions is not capable of oxidising chromous ions and hence the conversion of chromous to chromic appears to occur at the dissolution stage.Conditions of precipitation of chromium (III) oxinate have been studied in detail and ith as been shown that complete precipitation occurs in the pH range 4-8, on boiling the solution.A chloroform solution of chromium (III) oxinate obeys Beer's law and can be estimated colorimetrically.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19610120310
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  • 5
    Electronic Resource
    Electronic Resource
    Bromide Alkoxides of Aluminium (1962)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 16 (1962), S. 251-257 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reactions between aluminium alkoxides (methoxide, ethoxide, isopropoxide, n, sec. and tert. butoxides) and acetyl bromide has been studied and the compounds of the type: AlBr(OR)2, Al(OR)Br2 · 0.5 CH3COOR and AlBr3 · 1.5 CH3COOR, where OR is OMe, OEt, OPri, n, sec. or tert. OBu, have been isolated. The reaction of aluminium tert. butoxide and acetyl bromide was found to be very slow in cold as well as in boiling condition. The above compounds were crystallised from their respective alcohols, whereever possible. The ease with which these compounds exchange their radicals has been demonstrated by the reaction between tri-bromide and mono-bromide di-isopropoxide, in isopropanol, whereby the di-bromide was crystallised out. These bromide alkoxides are not stable to heat, even under reduced pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19620160503
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  • 6
    Electronic Resource
    Electronic Resource
    Derivatives of Aluminium with some α-hydroxy carboxylic acids (1963)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 20 (1963), S. 105-112 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reactions of aluminium isopropoxide and aluminium chloride with salicylic, mandelic and lactic acids in different stoichiometric ratios have been studied under absolutely anhydrous conditions. Mandelic and lactic acids were found to give tri-derivatives, whereas the salicylic acid gave only di-salicylate when the ratios of alkoxide and the acid was 1:3 (or slightly higher) or an equimolecular mixture of di-and tri-salicylate when the ratio was increased to 1:3.4 (or 3.4).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19630200113
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  • 7
    Electronic Resource
    Electronic Resource
    Alkoholysis Reactions of Hexaalkoxy Dititanium Alkylene-bis(acetoacetates) (1971)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 313 (1971), S. 174-178 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19713130119
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  • 8
    Electronic Resource
    Electronic Resource
    Attempted Preparation of Titanium Tetra-Acetate (1957)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 5 (1957), S. 101-104 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: With a view to prepare titanium tetra-acetate, the reaction between titanium tetrachloride and a mixture of acetic acid and acetic anhydride has been investigated in detail. It has been shown that the reaction in cold yielded pure crystalline dichloride di-acetate of titanium. On refluxing the reaction mixture, decomposition reactions occurred, yielding basic titanium derivatives of the type .
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19570050112
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  • 9
    Electronic Resource
    Electronic Resource
    Reactions of Titanium Tetra-chloride and Benzoic Acid (1959)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 8 (1959), S. 64-67 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Beim Studium der stufenweisen Reaktion zwischen Titantetrachlorid und Benzoesäure wurde festgestellt, daß die Bildung von Benzoyltitantrichlorid oder Dibenzoyltitandichlorid schnell erfolgt. Titanylbenzoat wird bei der Reaktion zwischen Titantetrachlorid und Benzoesäure in Benzol in Gegenwart von wasserfreiem Ammoniak gebildet. Die Ergebnisse deuten auf ähnliche Reaktionen zwischen Titantetrachlorid und Benzoesäure bzw. Essigsäure hin.
    Notes: The stepwise reaction between titanium tetra-chloride and benzoic acid has been investigated in detail. The formation of C6H5COOTiCl3 and (C6H5COO)2TiCl2 is direct and rapid. Further replacement of chlorine by benzoate radical makes the resulting molecule unstable and no tetra-benzoate is formed. A plausible mechanism has been suggested for the decomposition of mono-chloride derivative under different conditions. Titanyl benzoate has been obtained by treating a mixture of titanium tetra-chloride and excess benzoic acid in benzene with anhydrous ammonia. The results indicate that the reactions of titanium tetra-chloride with benzoic acid are similar to those with acetic acid, this finding is in sharp contrast to the different behaviour of titanium tetra-chloride towards alcohols and phenols.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19590080108
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  • 10
    Electronic Resource
    Electronic Resource
    Reactions of orthoesters of titanium. III. Reactions of Ethyl and Isopropyl Titanates with α-hydroxy carboxylic acids (1960)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 10 (1960), S. 247-256 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Stepwise replacement of alkyl groups of ethyl and isopropyl titanates by acyl groups of lactic, mandelic, and salicylic acids has been investigated by taking the reactants in predetermined stoichiometric proportions and causing them to react in refluxing benzene. The number of alkyl groups replaced was determined by estimating the alcohol liberated in the reaction and by analysing the reaction product. When the alkyl titanates are acted upon by 2 moles of these acids, salicylic acid liberates 4 moles of alcohol (per mole alkyl titanate) whereas remaining two acids displace only 3 or 3.5 moles of alcohol. Thus di-lactate and mandelate derivatives appear to withhold very firmly the remaining alkoxy group. However, with 3 moles (or higher proportions) of these acids, alkyl titanates yield, in every case, an equimolecular mixture of di- and tri-acylates. The lactate and mandelate products are white solids, but the salicylates are orange or deep red in colour. Mono-lactate, salicylate and mandelate derivatives are soluble in benzene, whereas the equimolecular mixture of di- and tri-lactate dissolves in water without precipitation of titanium hydroxide.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19600100502
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