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Thomas E Albrechtschmitt - One of the best experts on this subject based on the ideXlab platform.
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from order to disorder and back again in situ hydrothermal redox reactions of uranium Phosphites and phosphates
Inorganic Chemistry, 2013Co-Authors: Eric M. Villa, Connor J Marr, Juan Diwu, Evgeny V Alekseev, Wulf Depmeier, Thomas E AlbrechtschmittAbstract:Five new uranium Phosphites, phosphates, and mixed phosphate–Phosphite compounds were hydrothermally synthesized using H3PO3 as an initial reagent. These compounds are Cs4[(UO2)8(HPO4)5(HPO3)5]·4H2O (1), Cs[UIV(PO4)(H1.5PO4)]2 (2), Cs4[UIV6(PO4)8(HPO4)(HPO3)] (3), Cs10[UIV10(PO4)4(HPO4)14(HPO3)5]·H2O (4), and Cs3[UIV4(PO4)3(HPO4)5] (5). The first contains uranium(VI) and the latter four uranium(IV). Of the UIV structures, two have extensive disordering among the cesium cation positions, one of which also contains disordering at some of the phosphate–Phosphite positions. These intermediate compounds are bookended by nondisordered phases. The isolation of these transitional phases occurred at the higher of the pH conditions attempted here. Both the starting pH and the duration of the reactions have a strong influence on the products formed. Herein, we explore the second series of in situ hydrothermal redox reactions of uranyl nitrate with phosphorous acid and cesium carbonate. The isolation of these disorde...
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systematic evolution from uranyl vi Phosphites to uranium iv phosphates
ChemInform, 2012Co-Authors: Eric M. Villa, Connor J Marr, Evgeny V Alekseev, Wulf Depmeier, Laurent Jouffret, Thomas E AlbrechtschmittAbstract:In situ hydrothermal redox reactions of uranyl nitrate with phosphorous acid and alkali metal carbonates are explored and six new uranium Phosphites, phosphates, and Phosphite/phosphate mixed compounds are synthesized hydrothermally and one uranyl Phosphite is obtained at room temperature.
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systematic evolution from uranyl vi Phosphites to uranium iv phosphates
Inorganic Chemistry, 2012Co-Authors: Eric M. Villa, Connor J Marr, Evgeny V Alekseev, Wulf Depmeier, Laurent Jouffret, Thomas E AlbrechtschmittAbstract:Six new uranium Phosphites, phosphates, and mixed phosphate–Phosphite compounds were hydrothermally synthesized, with an additional uranyl Phosphite synthesized at room temperature. These compounds can contain UVI or UIV, and two are mixed-valent UVI/UIV compounds. There appears to be a strong correlation between the starting pH and reaction duration and the products that form. In general, Phosphites are more likely to form at shorter reaction times, while phosphates form at extended reaction times. Additionally, reduction of uranium from UVI to UIV happens much more readily at lower pH and can be slowed with an increase in the initial pH of the reaction mixture. Here we explore the in situ hydrothermal redox reactions of uranyl nitrate with phosphorous acid and alkali-metal carbonates. The resulting products reveal the evolution of compounds formed as these hydrothermal redox reactions proceed forward with time.
Arbuzov B. - One of the best experts on this subject based on the ideXlab platform.
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Synthesis of esters of phosphonic acids containing heterocyclic radicals - communication 4. Esters of phosphonic acids containing isoxazole and quinoxaline radicals
2020Co-Authors: Arbuzov B.Abstract:1. Reaction of sodium dialkyl Phosphite and of trialkyl Phosphite with 3-chloromethylisoxazole gave esters of phosphonic acids containing the isoxazole ring. 2. Reaction of trialkyl Phosphites with 2,3-di(ω-bromomethyl)-quinoxaline led to the methyl, ethyl and isopropyl esters of 2,3-di(phosphonomethyl)-quinoxaline. 3. The phosphonic ester could not be isolated after reaction of sodium diethyl Phosphite with 2,3-di-(ω-bromomethyl)-quinoxaline. 4. Diethylphosphorous acid adds on to quinoxaline under the influence of sodium alcoholate to form 1,4-dihydro-2,3-di(diethylphosphono)-quinoxaline. © 1954 Consultants Bureau, Inc
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β-Keto phosphonic esters - Communication 5. Structures of the products of the reaction of some α-halo ketones of the carbocyclic series with triethyl Phosphite and sodium diethyl Phosphite
2020Co-Authors: Arbuzov B., Polezhaeva N.Abstract:1. On the basis of chemical and spectrographic data it was shown that the product of the action of sodium diethyl Phosphite on 2-chlorocyclopentanone is diethyl 1,2-epoxycyclopentylphosphonate. The product of the action of sodium diethyl Phosphite on 2 -bromocyelohexanone is a mixture of 1-cyclohexen-1-yl diethyl phosphate and diethyl 1,2-epoxycyclohexylphosphonate. 2. The products of the action of sodium diethyl Phosphite and of triethyl Phosphite on 2-chloro-2-methyl-cyclohexanone consist of diethyl 2-methyl-1-cyclohexen-1-yl phosphate; the product of the action of triethyl Phosphite on 3-bromo-3-methyl-2-butanone is diethyl isopropenyl phosphate. 3. The product of the action of sodium diethyl Phosphite on 3-bromocamphor is the corresponding mixed phosphoric ester. © 1961 Consultants Bureau Enterprises, Inc
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Esters of β-ketophosphonic acids - Communication 9. Reaction of 2,6-dibromo- and 2,6-dichlorocyclohexanone with one and two moles of triethyl Phosphite
2020Co-Authors: Arbuzov B., Polezhaeva N.Abstract:1. The reaction of trans-2,6-dibromocyclohexanone with one and two molecules of triethyl Phosphite follows a complex course. The reaction with one molecule of triethyl Phosphite stops at the stage of formation of the diethyl bromo-6-cyclohexen-1-yl ester of phosphoric acid, which is further converted to diethyl cyclohexadien-1,3-yl-2 phosphate and diethyl phenyl phosphate. The diethyl phosphoric ester of the enol form of the ester of cyclohexanone-2-phosphonic-1 acid is not produced in this process. 2. The cis- and trans-isomers of 2,6-dichlorocyclohexanone reacr with two molecules of triethyl Phosphite with the formation of diethyl chloro-6-cyclohexen-1-yl ester of phosphoric acid. 3. The bromination of the diethyl cyclohexenyl ester of phosphoric acid with bromosuccinimide with subsequent treatment with triethyl Phosphite does not lead to the diethylphosphoric ester of the enol form of cyclohexan-one-2-phosphonic-1 acid. A mixture of products is formed similar to the mixture obtained when triethyl Phosphite acts on cis-2,6-dibromocyclohexanone. © 1962 Consultants Bureau Enterprises, Inc
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Synthesis of tetrabenzoylthiirane and its reaction with derivatives of acids of trivalent phosphorus
2020Co-Authors: Arbuzov B., Polezhaeva N., Agafonov M.Abstract:1. Tetrabenzoylthiirane has been obtained by reaction of dibenzoyldibromomethane with potassium xanthate and its reactions with trimethyl Phosphite, triphenylphosphine, and tris(dimethylamino)phosphine has been studied. 2. On reaction with the P(III) derivatives mentioned, tetrabenzoylthiirane undergoes desulfuration and deoxidation with the formation of β, β'-dibenzoyl-α,'α-diphenylfuran. 3. Tetrabenzoylethylene reacts with tris(dimethylamino)phosphine, with triphenylphosphine, and with trimethyl Phosphite to form the corresponding oxide (or phosphate) and β,β'-dibenzoyl-α, α' diphenylfuran. © 1977 Plenum Publishing Corporation
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Reaction of trimethyl Phosphite and tri(dimethylamino)phosphine with C,N-diphenylnitrone and 2,5-diphenyl-3,4-diazacyclopentadien-l-one-3,4-dioxide
2020Co-Authors: Arbuzov B., Dianova E., Lisin A.Abstract:1. C,N-Diphenylnitrone reacts with trimethyl Phosphite to give trimethyl phosphate and benzalaniline. 2. C,N-Diphenylnitrone and 2,5-diphenyl-3,4-diazacyclopentadien-1-one-3,4-dioxide react with tri-(dimethylamino)phosphine in two directions: with the transfer of oxygen from the nitrone to the tri(dimethylamino)phosphine, and with the formation of bipolar ions, which were isolated as the sodium salts by reaction with sodium tetraphenylboronate. © 1975 Plenum Publishing Corporation
Evgeny V Alekseev - One of the best experts on this subject based on the ideXlab platform.
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from order to disorder and back again in situ hydrothermal redox reactions of uranium Phosphites and phosphates
Inorganic Chemistry, 2013Co-Authors: Eric M. Villa, Connor J Marr, Juan Diwu, Evgeny V Alekseev, Wulf Depmeier, Thomas E AlbrechtschmittAbstract:Five new uranium Phosphites, phosphates, and mixed phosphate–Phosphite compounds were hydrothermally synthesized using H3PO3 as an initial reagent. These compounds are Cs4[(UO2)8(HPO4)5(HPO3)5]·4H2O (1), Cs[UIV(PO4)(H1.5PO4)]2 (2), Cs4[UIV6(PO4)8(HPO4)(HPO3)] (3), Cs10[UIV10(PO4)4(HPO4)14(HPO3)5]·H2O (4), and Cs3[UIV4(PO4)3(HPO4)5] (5). The first contains uranium(VI) and the latter four uranium(IV). Of the UIV structures, two have extensive disordering among the cesium cation positions, one of which also contains disordering at some of the phosphate–Phosphite positions. These intermediate compounds are bookended by nondisordered phases. The isolation of these transitional phases occurred at the higher of the pH conditions attempted here. Both the starting pH and the duration of the reactions have a strong influence on the products formed. Herein, we explore the second series of in situ hydrothermal redox reactions of uranyl nitrate with phosphorous acid and cesium carbonate. The isolation of these disorde...
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systematic evolution from uranyl vi Phosphites to uranium iv phosphates
ChemInform, 2012Co-Authors: Eric M. Villa, Connor J Marr, Evgeny V Alekseev, Wulf Depmeier, Laurent Jouffret, Thomas E AlbrechtschmittAbstract:In situ hydrothermal redox reactions of uranyl nitrate with phosphorous acid and alkali metal carbonates are explored and six new uranium Phosphites, phosphates, and Phosphite/phosphate mixed compounds are synthesized hydrothermally and one uranyl Phosphite is obtained at room temperature.
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systematic evolution from uranyl vi Phosphites to uranium iv phosphates
Inorganic Chemistry, 2012Co-Authors: Eric M. Villa, Connor J Marr, Evgeny V Alekseev, Wulf Depmeier, Laurent Jouffret, Thomas E AlbrechtschmittAbstract:Six new uranium Phosphites, phosphates, and mixed phosphate–Phosphite compounds were hydrothermally synthesized, with an additional uranyl Phosphite synthesized at room temperature. These compounds can contain UVI or UIV, and two are mixed-valent UVI/UIV compounds. There appears to be a strong correlation between the starting pH and reaction duration and the products that form. In general, Phosphites are more likely to form at shorter reaction times, while phosphates form at extended reaction times. Additionally, reduction of uranium from UVI to UIV happens much more readily at lower pH and can be slowed with an increase in the initial pH of the reaction mixture. Here we explore the in situ hydrothermal redox reactions of uranyl nitrate with phosphorous acid and alkali-metal carbonates. The resulting products reveal the evolution of compounds formed as these hydrothermal redox reactions proceed forward with time.
Eric M. Villa - One of the best experts on this subject based on the ideXlab platform.
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New Uranyl Open Framework and Sheet Compounds Formed via In-Situ Protonation of Piperazine by Phosphorous Acid
MDPI AG, 2018Co-Authors: Eric M. Villa, Justin N. Cross, Thomas E. Albrecht-schmittAbstract:Two new uranyl compounds were hydrothermally synthesized employing piperazine as an organic templating agent. The piperazine was protonated in-situ by phosphorous acid, forming the piperazinium dication featured in these compounds. The two new structures presented here are a uranyl Phosphite 2D sheet and a 3D uranyl mixed Phosphite⁻phosphate network with cation occupied channels. Both included strong hydrogen bonding from the piperazinium cation to the uranyl Phosphite or mixed Phosphite⁻phosphate network. These two structures can be reliably formed through careful control of pH of the starting solution and the reaction duration. The piperazinium uranyl Phosphite compound was the latest in a family of uranyl Phosphites, and demonstrates the structural versatility of this combination. The mixed Phosphite⁻phosphate compound builds on hydrothermal redox chemistry, illustrating the variety of compounds that can be isolated by exploiting in-situ redox processes to elucidate new uranium structure types
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from order to disorder and back again in situ hydrothermal redox reactions of uranium Phosphites and phosphates
Inorganic Chemistry, 2013Co-Authors: Eric M. Villa, Connor J Marr, Juan Diwu, Evgeny V Alekseev, Wulf Depmeier, Thomas E AlbrechtschmittAbstract:Five new uranium Phosphites, phosphates, and mixed phosphate–Phosphite compounds were hydrothermally synthesized using H3PO3 as an initial reagent. These compounds are Cs4[(UO2)8(HPO4)5(HPO3)5]·4H2O (1), Cs[UIV(PO4)(H1.5PO4)]2 (2), Cs4[UIV6(PO4)8(HPO4)(HPO3)] (3), Cs10[UIV10(PO4)4(HPO4)14(HPO3)5]·H2O (4), and Cs3[UIV4(PO4)3(HPO4)5] (5). The first contains uranium(VI) and the latter four uranium(IV). Of the UIV structures, two have extensive disordering among the cesium cation positions, one of which also contains disordering at some of the phosphate–Phosphite positions. These intermediate compounds are bookended by nondisordered phases. The isolation of these transitional phases occurred at the higher of the pH conditions attempted here. Both the starting pH and the duration of the reactions have a strong influence on the products formed. Herein, we explore the second series of in situ hydrothermal redox reactions of uranyl nitrate with phosphorous acid and cesium carbonate. The isolation of these disorde...
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systematic evolution from uranyl vi Phosphites to uranium iv phosphates
ChemInform, 2012Co-Authors: Eric M. Villa, Connor J Marr, Evgeny V Alekseev, Wulf Depmeier, Laurent Jouffret, Thomas E AlbrechtschmittAbstract:In situ hydrothermal redox reactions of uranyl nitrate with phosphorous acid and alkali metal carbonates are explored and six new uranium Phosphites, phosphates, and Phosphite/phosphate mixed compounds are synthesized hydrothermally and one uranyl Phosphite is obtained at room temperature.
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systematic evolution from uranyl vi Phosphites to uranium iv phosphates
Inorganic Chemistry, 2012Co-Authors: Eric M. Villa, Connor J Marr, Evgeny V Alekseev, Wulf Depmeier, Laurent Jouffret, Thomas E AlbrechtschmittAbstract:Six new uranium Phosphites, phosphates, and mixed phosphate–Phosphite compounds were hydrothermally synthesized, with an additional uranyl Phosphite synthesized at room temperature. These compounds can contain UVI or UIV, and two are mixed-valent UVI/UIV compounds. There appears to be a strong correlation between the starting pH and reaction duration and the products that form. In general, Phosphites are more likely to form at shorter reaction times, while phosphates form at extended reaction times. Additionally, reduction of uranium from UVI to UIV happens much more readily at lower pH and can be slowed with an increase in the initial pH of the reaction mixture. Here we explore the in situ hydrothermal redox reactions of uranyl nitrate with phosphorous acid and alkali-metal carbonates. The resulting products reveal the evolution of compounds formed as these hydrothermal redox reactions proceed forward with time.
Polezhaeva N. - One of the best experts on this subject based on the ideXlab platform.
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β-Keto phosphonic esters - Communication 5. Structures of the products of the reaction of some α-halo ketones of the carbocyclic series with triethyl Phosphite and sodium diethyl Phosphite
2020Co-Authors: Arbuzov B., Polezhaeva N.Abstract:1. On the basis of chemical and spectrographic data it was shown that the product of the action of sodium diethyl Phosphite on 2-chlorocyclopentanone is diethyl 1,2-epoxycyclopentylphosphonate. The product of the action of sodium diethyl Phosphite on 2 -bromocyelohexanone is a mixture of 1-cyclohexen-1-yl diethyl phosphate and diethyl 1,2-epoxycyclohexylphosphonate. 2. The products of the action of sodium diethyl Phosphite and of triethyl Phosphite on 2-chloro-2-methyl-cyclohexanone consist of diethyl 2-methyl-1-cyclohexen-1-yl phosphate; the product of the action of triethyl Phosphite on 3-bromo-3-methyl-2-butanone is diethyl isopropenyl phosphate. 3. The product of the action of sodium diethyl Phosphite on 3-bromocamphor is the corresponding mixed phosphoric ester. © 1961 Consultants Bureau Enterprises, Inc
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Esters of β-ketophosphonic acids - Communication 9. Reaction of 2,6-dibromo- and 2,6-dichlorocyclohexanone with one and two moles of triethyl Phosphite
2020Co-Authors: Arbuzov B., Polezhaeva N.Abstract:1. The reaction of trans-2,6-dibromocyclohexanone with one and two molecules of triethyl Phosphite follows a complex course. The reaction with one molecule of triethyl Phosphite stops at the stage of formation of the diethyl bromo-6-cyclohexen-1-yl ester of phosphoric acid, which is further converted to diethyl cyclohexadien-1,3-yl-2 phosphate and diethyl phenyl phosphate. The diethyl phosphoric ester of the enol form of the ester of cyclohexanone-2-phosphonic-1 acid is not produced in this process. 2. The cis- and trans-isomers of 2,6-dichlorocyclohexanone reacr with two molecules of triethyl Phosphite with the formation of diethyl chloro-6-cyclohexen-1-yl ester of phosphoric acid. 3. The bromination of the diethyl cyclohexenyl ester of phosphoric acid with bromosuccinimide with subsequent treatment with triethyl Phosphite does not lead to the diethylphosphoric ester of the enol form of cyclohexan-one-2-phosphonic-1 acid. A mixture of products is formed similar to the mixture obtained when triethyl Phosphite acts on cis-2,6-dibromocyclohexanone. © 1962 Consultants Bureau Enterprises, Inc
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Synthesis of tetrabenzoylthiirane and its reaction with derivatives of acids of trivalent phosphorus
2020Co-Authors: Arbuzov B., Polezhaeva N., Agafonov M.Abstract:1. Tetrabenzoylthiirane has been obtained by reaction of dibenzoyldibromomethane with potassium xanthate and its reactions with trimethyl Phosphite, triphenylphosphine, and tris(dimethylamino)phosphine has been studied. 2. On reaction with the P(III) derivatives mentioned, tetrabenzoylthiirane undergoes desulfuration and deoxidation with the formation of β, β'-dibenzoyl-α,'α-diphenylfuran. 3. Tetrabenzoylethylene reacts with tris(dimethylamino)phosphine, with triphenylphosphine, and with trimethyl Phosphite to form the corresponding oxide (or phosphate) and β,β'-dibenzoyl-α, α' diphenylfuran. © 1977 Plenum Publishing Corporation
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β-Keto phosphonic esters Communication 12. Structures of the products of the reaction of some α-halo ketones of the aromatic series with triethyl Phosphite and with sodium diethyl Phosphite
2020Co-Authors: Arbuzov B., Polezhaeva N., Shamsutdinova A.Abstract:1. According to chemical and spectroscopic data the product of the reaction of 2-bromoacetophenone with sodium diethyl Phosphite is a difficultly separable mixture of esters of similar structure, namely diethyl 1-phenylvinyl phosphate and diethyl 1,2-epoxy-1-phenylethylphosphonate. 2. The product of the action of 2-bromopropiophenone on sodium diethyl Phosphite is diethyl 1,2-epoxylphenylpropylphosphonate. 3. The reaction of 2-bromopropiophenone with triethyl Phosphite gave diethyl 1-methylphenacylphosphonate and diethyl 1-phenylpropenyl phosphate. 4. The reactions of 2-bromo-2-methylpropiophenone, in which the bromine is on a tertiary carbon atom, with triethyl Phosphite and with sodium diethyl Phosphite take the same direction with formation of diethyl 2-methyl-1-propenyl phosphate. © 1964 Consultants Bureau
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Action of diethyl Phosphite on p-benzoquinone and 1,4-naphthoquinone
2020Co-Authors: Arbuzov B., Polezhaeva N.Abstract:The addition of diphenyl Phosphite to p-benzoquinone and to 1,4-naphthoquinone in presence of sodium alkoxide led to the formation of diethyl p-hydroxyphenyl phosphate and diethyl 4-hydroxy-1-naphthyl phosphate, respectively. © 1961 Consultants Bureau Enterprises Inc
