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pro vyhledávání: '"Christo Balarew"'
Autor:
Christo Balarew
Publikováno v:
Pure and Applied Chemistry. 91:2037-2042
By decision of the UN General Assembly 2019 was declared an International Year of the Periodic Table of Chemical Elements. On this occasion, in Bulgaria, an anniversary postage stamp was issued. Search for a link between the properties of the chemica
Autor:
Diana Rabadjieva, Irena Matulková, Ivan Němec, Christo Balarew, Rumjana Gergulova, Stefka Tepavitcharova, David Havlíček, Ivana Císařová, J. Plocek
Publikováno v:
Monatshefte für Chemie - Chemical Monthly. 149:299-311
The crystallization in the systems glycine–ZnX2 –H2O (X = Cl−, Br−, I−) was summarised. Occurrence of both equilibrium and non-equilibrium crystallization was found for these systems. The systems include complex compounds, from which three
Publikováno v:
Monatshefte für Chemie - Chemical Monthly. 149:289-298
The effects of temperature, cooling rate, and solution concentration on the spontaneous crystallization of Na2SO4·7H2O and Na2SeO4·7.5H2O from their supersaturated solutions was studied. It was found that the crystallization of Na2SO4·7H2O almost
Publikováno v:
Acta Crystallographica Section C Structural Chemistry. 73:582-587
Metal selenates crystallize in many instances in isomorphic structures of the corresponding sulfates. Sodium magnesium selenate decahydrate, Na2Mg(SeO4)2·10H2O, and sodium magnesium selenate dihydrate, Na2Mg(SeO4)2·2H2O, were synthesized by prepari
Publikováno v:
Pure and Applied Chemistry. 87:445-451
For the spontaneous crystallization of highly soluble salts, a sufficiently high concentration of certain ionic species (complexes) or clusters has to be created in the solution, so that their grouping could yield a suitable crystal nucleus in a reas
Publikováno v:
Acta crystallographica. Section C, Structural chemistry. 73(Pt 7)
Metal selenates crystallize in many instances in isomorphic structures of the corresponding sulfates. Sodium magnesium selenate decahydrate, Na
Publikováno v:
Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials. 70:714-722
The crystal structures of the two hydrates Na2SeO4·10H2O and Na2SeO4·7.5H2O are studied for the first time. The structures of Na2SO4·10H2O and Na2SO4·7H2O are reinvestigated as a function of temperature with respect to the degree of disorder of t
Publikováno v:
Solid State Phenomena. 194:222-225
The crystallization in the MX – CuX2 – H2O system (M+ = K, NH4, Rb, Cs; X- = Cl, Br) was studied and 2MX.CuX2.2H2O was found to be the predominant type of double salts. All of them are isostructural (tetragonal crystal system, sp. gr. P42/mnm) an
Publikováno v:
Open Chemistry, Vol 5, Iss 1, Pp 13-19 (2007)
The cocrystallization of Ce2(SO4)3 and La2(SO4)3 is studied in aqueous and H2SO4 (150 g/dm3) solutions at 25 °C and 64 °C. The effect of the formation of inner sphere sulfate complexes of the type LnSO 4+ in determining the composition of the equil
Autor:
Christo Balarew, Stefka Tepavitcharova
Publikováno v:
Monatshefte f�r Chemie / Chemical Monthly. 134:721-734
The data available on the solubility phase diagrams and on the crystallization of chloride and bromide double salts in the systems MX–MeX 2–H2O (M=K, NH4, Rb, Cs; Me=Mg, Mn, Fe, Co, Ni, Cu; X=Cl, Br) over a wide temperature range are collected an