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rdf:type
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Description
| - Je popsána příprava nových představitelů 8-, 9- a 10-vrcholové serie monokarbaboranů, která je založena na postupné degradaci dekaboranového skeletu za různých reakčních podmínek. (cs)
- The conditions for a reaction between nido-B10H14 (1) and aqueous formaldehyde in an alkaline solution have been optimized, which resulted in the isolation of the [arachno-6-CB9H14](-) anion (2) in 52% yield. Anion 2 was used as a convenient source for the synthesis of a series of basic monocarbaborane compounds. Thus, oxidation of 2 (Et4N+ salt) with I-2 in CH2Cl2 in the presence of Et3N at room temperature afforded the [nido-6-CB9H12](-) anion (3). Acidification of anion 2 (generated in situ from borane 1) with hydrochloric acid, in the presence of both FeCl3-6H(2)O and CH2O, led to the formation of arachno-4-CB8H4 (4), from which nido-1-CB8H12 (5) was obtained by dehydrogenation at 200 degreesC in quantitative yield. Compound 4 can easily be converted into the [closo-1-CB7H8](-) anion (6) in 71% yield via reaction with Et3N and I-2 in THF at -78 degreesC. Anion 6 is also formed in 75% yield by treatment of carborane 5 with Et3N in refluxing toluene. The [closo-1-CB8H9](-) anion (...
- The conditions for a reaction between nido-B10H14 (1) and aqueous formaldehyde in an alkaline solution have been optimized, which resulted in the isolation of the [arachno-6-CB9H14](-) anion (2) in 52% yield. Anion 2 was used as a convenient source for the synthesis of a series of basic monocarbaborane compounds. Thus, oxidation of 2 (Et4N+ salt) with I-2 in CH2Cl2 in the presence of Et3N at room temperature afforded the [nido-6-CB9H12](-) anion (3). Acidification of anion 2 (generated in situ from borane 1) with hydrochloric acid, in the presence of both FeCl3-6H(2)O and CH2O, led to the formation of arachno-4-CB8H4 (4), from which nido-1-CB8H12 (5) was obtained by dehydrogenation at 200 degreesC in quantitative yield. Compound 4 can easily be converted into the [closo-1-CB7H8](-) anion (6) in 71% yield via reaction with Et3N and I-2 in THF at -78 degreesC. Anion 6 is also formed in 75% yield by treatment of carborane 5 with Et3N in refluxing toluene. The [closo-1-CB8H9](-) anion (... (en)
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Title
| - New ways to a series of parent representatives of the eight-, nine-, and ten-vertex monocarbaborane family
- Nové cesty k serii mateřských representantů 8-, 9- a 10-vrcholové rodiny monokarbaboranů (cs)
- New ways to a series of parent representatives of the eight-, nine-, and ten-vertex monocarbaborane family (en)
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skos:prefLabel
| - New ways to a series of parent representatives of the eight-, nine-, and ten-vertex monocarbaborane family
- Nové cesty k serii mateřských representantů 8-, 9- a 10-vrcholové rodiny monokarbaboranů (cs)
- New ways to a series of parent representatives of the eight-, nine-, and ten-vertex monocarbaborane family (en)
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skos:notation
| - RIV/61388980:_____/04:00106540!RIV/2005/AV0/A50005/N
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(IBS4032007), P(LN00A028), Z(AV0Z4032918), Z(MSM 113100001)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/61388980:_____/04:00106540
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - boranes; carboranes; geometry optimization (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - DE - Spolková republika Německo
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - European Journal of Inorganic Chemistry
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Bakardjiev, Mario
- Holub, Josef
- Jelínek, Tomáš
- Štíbr, Bohumil
- Hnyk, Drahomír
- Hofmann, M.
- Bačkovský, Jaroslav
- Wrackmeyer, B.
- Brellochs, B.
- Cásařová, I.
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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