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Thermal And Gamma-Radiation Annealing Of The Iridium-192 Recoil Species In Crystalline Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O; Recuit Thermique et par Rayonnement Gamma de l'espece {sup 192}Ir de Recul dans des Cristaux de Na{sub 2}IrCl{sub 6} * 6H{sub 2}O; 0422 0415 041f 041b 041e 0412 041e 0419 0418 0413 0410 041c 041c 0410 - 041e 0422 0416 0418 0413 041f 0420 041e 0414 0423 041a 0422 041e 0412 041e 0422 0414 0410 0427 0418 0418 0420 0418 0414 0418 042f -192 0412 041a 0420 0418 0421 0422 0410 041b 041b 0418 0427 0415 0421 041a 041e 041c Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O; Regeneracion Termica y por Irradiacion Gamma de las Especies de Retroceso del Iridio-192 en Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O Cristalino

Conference:

Abstract

Ii is possible to separate by means of paper electrophoresis as many as 13 different recoil compounds from Na{sub 2}IrCl{sub 6}H{sub 2}O {center_dot} 6H{sub 2}O as a result of the nuclear reaction Ir{sup 191} (n, {gamma}) Ir{sup 192}. While most of them have anionic character, two of them act as Irwz-labelled cations. These carrier-free compounds have been studied as regards their behaviour towards reducing and oxidizing agents and aging in solution. Independently the hydrolysis of the hexachloro complexes of ter- and quadrivalent iridium, which had been labelled with Cl{sup 36} and Ir{sup 192}, was investigated. A comparison between these two series of results supported by further results from neutron activation analysis enables the recoil products to be identified mostly as octahedral complexes of Ir-III containing Cl{sup -}, H{sub 2}O and OH{sup -} ligands to a different extent. Evidently the water of crystallization plays an important role in the formation of the recoil species. The thermal annealing of these products at 120 Degree-Sign C shows a rapid decrease in the yields of the aquochloro, hydroxochloro and aquohydroxochloro complexes towards formation of the mother compound with the exception of the pentachloro complex. This complex decreases only after an initial increase, indicating that  More>>
Authors:
Bell, Rita; Herr, W. [1] 
  1. Kernforschungsanlage Juelich, Institut fuer Kernchemie der Universitaet Koeln, Cologne, Federal Republic of Germany (Germany)
Publication Date:
Apr 15, 1965
Product Type:
Conference
Report Number:
IAEA-SM-57/18
Resource Relation:
Conference: Symposium on Chemical Effects Associated with Nuclear Reactions and Radioactive Transformations, Heidelberg (Germany), 7-11 Dec 1964; Other Information: 16 refs., 2 tabs., 3 figs.; Related Information: In: Chemical Effects of Nuclear Transformations. Vol. II. Proceedings of the Symposium on Chemical Effects Associated with Nuclear Reactions and Radioactive Transformations| 572 p.
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; 36 MATERIALS SCIENCE; AGING; ANNEALING; CATIONS; CHEMICAL REACTION YIELD; CHLORINE 36; CHLORINE IONS; CRYSTALLIZATION; ELECTROPHORESIS; EXCEPTIONS; GAMMA RADIATION; HYDROLYSIS; HYDROXIDES; IRIDIUM; IRIDIUM 191; IRIDIUM 192; LIGANDS; NEUTRON ACTIVATION ANALYSIS; NUCLEAR REACTIONS; RECOILS
OSTI ID:
22184029
Research Organizations:
International Atomic Energy Agency, Vienna (Austria); Joint Commission on Applied Radioactivity of the International Council of Scientific Unions, Paris (France)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA13M3337008564
Submitting Site:
INIS
Size:
page(s) 315-323
Announcement Date:
Jan 30, 2014

Conference:

Citation Formats

Bell, Rita, and Herr, W. Thermal And Gamma-Radiation Annealing Of The Iridium-192 Recoil Species In Crystalline Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O; Recuit Thermique et par Rayonnement Gamma de l'espece {sup 192}Ir de Recul dans des Cristaux de Na{sub 2}IrCl{sub 6} * 6H{sub 2}O; 0422 0415 041f 041b 041e 0412 041e 0419 0418 0413 0410 041c 041c 0410 - 041e 0422 0416 0418 0413 041f 0420 041e 0414 0423 041a 0422 041e 0412 041e 0422 0414 0410 0427 0418 0418 0420 0418 0414 0418 042f -192 0412 041a 0420 0418 0421 0422 0410 041b 041b 0418 0427 0415 0421 041a 041e 041c Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O; Regeneracion Termica y por Irradiacion Gamma de las Especies de Retroceso del Iridio-192 en Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O Cristalino. IAEA: N. p., 1965. Web.
Bell, Rita, & Herr, W. Thermal And Gamma-Radiation Annealing Of The Iridium-192 Recoil Species In Crystalline Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O; Recuit Thermique et par Rayonnement Gamma de l'espece {sup 192}Ir de Recul dans des Cristaux de Na{sub 2}IrCl{sub 6} * 6H{sub 2}O; 0422 0415 041f 041b 041e 0412 041e 0419 0418 0413 0410 041c 041c 0410 - 041e 0422 0416 0418 0413 041f 0420 041e 0414 0423 041a 0422 041e 0412 041e 0422 0414 0410 0427 0418 0418 0420 0418 0414 0418 042f -192 0412 041a 0420 0418 0421 0422 0410 041b 041b 0418 0427 0415 0421 041a 041e 041c Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O; Regeneracion Termica y por Irradiacion Gamma de las Especies de Retroceso del Iridio-192 en Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O Cristalino. IAEA.
Bell, Rita, and Herr, W. 1965. "Thermal And Gamma-Radiation Annealing Of The Iridium-192 Recoil Species In Crystalline Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O; Recuit Thermique et par Rayonnement Gamma de l'espece {sup 192}Ir de Recul dans des Cristaux de Na{sub 2}IrCl{sub 6} * 6H{sub 2}O; 0422 0415 041f 041b 041e 0412 041e 0419 0418 0413 0410 041c 041c 0410 - 041e 0422 0416 0418 0413 041f 0420 041e 0414 0423 041a 0422 041e 0412 041e 0422 0414 0410 0427 0418 0418 0420 0418 0414 0418 042f -192 0412 041a 0420 0418 0421 0422 0410 041b 041b 0418 0427 0415 0421 041a 041e 041c Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O; Regeneracion Termica y por Irradiacion Gamma de las Especies de Retroceso del Iridio-192 en Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O Cristalino." IAEA.
@misc{etde_22184029,
title = {Thermal And Gamma-Radiation Annealing Of The Iridium-192 Recoil Species In Crystalline Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O; Recuit Thermique et par Rayonnement Gamma de l'espece {sup 192}Ir de Recul dans des Cristaux de Na{sub 2}IrCl{sub 6} * 6H{sub 2}O; 0422 0415 041f 041b 041e 0412 041e 0419 0418 0413 0410 041c 041c 0410 - 041e 0422 0416 0418 0413 041f 0420 041e 0414 0423 041a 0422 041e 0412 041e 0422 0414 0410 0427 0418 0418 0420 0418 0414 0418 042f -192 0412 041a 0420 0418 0421 0422 0410 041b 041b 0418 0427 0415 0421 041a 041e 041c Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O; Regeneracion Termica y por Irradiacion Gamma de las Especies de Retroceso del Iridio-192 en Na{sub 2}IrCl{sub 6} {center_dot} 6H{sub 2}O Cristalino}
author = {Bell, Rita, and Herr, W.}
abstractNote = {Ii is possible to separate by means of paper electrophoresis as many as 13 different recoil compounds from Na{sub 2}IrCl{sub 6}H{sub 2}O {center_dot} 6H{sub 2}O as a result of the nuclear reaction Ir{sup 191} (n, {gamma}) Ir{sup 192}. While most of them have anionic character, two of them act as Irwz-labelled cations. These carrier-free compounds have been studied as regards their behaviour towards reducing and oxidizing agents and aging in solution. Independently the hydrolysis of the hexachloro complexes of ter- and quadrivalent iridium, which had been labelled with Cl{sup 36} and Ir{sup 192}, was investigated. A comparison between these two series of results supported by further results from neutron activation analysis enables the recoil products to be identified mostly as octahedral complexes of Ir-III containing Cl{sup -}, H{sub 2}O and OH{sup -} ligands to a different extent. Evidently the water of crystallization plays an important role in the formation of the recoil species. The thermal annealing of these products at 120 Degree-Sign C shows a rapid decrease in the yields of the aquochloro, hydroxochloro and aquohydroxochloro complexes towards formation of the mother compound with the exception of the pentachloro complex. This complex decreases only after an initial increase, indicating that it is involved as an intermediate from other accompanying products during their annealing. Gamma-radiation annealing reveals many single steps whose general trend is a transition from lesser Cl-containing species to a higher Cl content leading finally to the hexachloro complex. This shows that the annealing process consists in the re-entering of Cl atoms (or ions) into the ligand sphere with the accompanying displacement of H{sub 2}O as well as OH (OH{sup -}). (author) [French] Il est possible de separer de Na{sub 2}IrCl{sub 6}(6H{sub 2}O), au moyen de l'electrophorese sur papier, jusqu'a 13 composes de recul resultant de la reaction nucleaire {sup 191}Ir(n, {gamma}){sup 192}lr. Si la plupart de ces composes ont un caractere anionique, deux d'entre eux se comportent comme des cations marques avec {sup 192}Ir. Les auteurs ont analyse le comportement de ces composes sans entraineur a l'egard des agents de reduction et d'oxydation et leur vieillissement en solution. Ils ont etudie separement l'hydrolyse des complexes hexachloro d'iridium, tri-et quadrivalent, qui avaient ete marques avec {sup 36}Cl et {sup 192}Ir. La comparaison entre les deux series de resultats, corroboree par d'autres donnees obtenues au moyen de l'analyse par activation neutronique, permet d'identifier les produits de recul, qui pour la plupart sont des complexes octaedriques d'iridium (III) contenant une plus ou moins grande proportion des coordinats Cl{sup -}, H{sub 2}O et OH{sup -}. Evidemment, l'eau de cristallisation joue un role important dans la formation des especes chimiques de recul. Avec le recuit thermique de ces produits a 120 Degree-Sign C, les auteurs ont observe une diminution rapide des rendements en complexes aquochloro, hydroxychloro et aquohydroxychloro en faveur de la formation de la substance mere, sauf dans le cas du complexe pentachloro. Celui-ci ne diminue qu'apres une augmentation initiale, ce qui montre qu' il fait fonction de produit intermediaire dans le recuit d'autres produits d'accompagnement. Le recuit provoque par les rayonnements gamma presente de nombreuses phases distinctes, avec tendance generale a une transition des especes chimiques moins chlorees a d'autres especes plus chlorees, aboutissant finalement a la formation du complexe hexachloro. Le processus de recuit consiste donc en un retour d es atomes (ou ions) Cl dans la sphere des coordinats et un deplacement simultane de H{sub 2}O et de OH (OH{sup -}). (author) [Spanish] Por electroforesis sobre papel resulta posible separar hasta 13 diferentes compuestos de retroceso formados como consecuencia de la reaccion nuclear {sup 192}Ir(n, {gamma}) {sup 192}Ir aplicada al Na{sub 2}IrCl{sub 6} * 6H{sub 2}O. Si bien la mayoria de ellos tienen caracter anionico, dos de ellos se comportan como cationes marcados con {sup 192}Ir. Los autores han estudiado el comportamiento de estos compuestos libres de portador frente a los agentes reductores y oxidantes y al envejecimiento en solucion. Investigaron independientemente la hidrolisis de los hexacloro complejos de iridio tri y tetravalente, que habian sido marcados con {sup 36}Cl y {sup 192}Ir. La comparacion entre las dos series de resultados, corroborada por otros datos obtenidos por activacion neutronica, permite identificar la mayor parte de los productos de retroceso como complejos octaedricos de Ir(III) que contienen ligandos Cl{sup -}, H{sub 2}O y OH{sup -} en distintas proporciones. Evidentemente, el agua de cristalizacion desempena un papel importante en la formacion de las especies de retroceso. La regeneracion termica de estos productos a 120 Degree-Sign C revela una rapida disminucion de los rendimientos de los acuocloro, hidroxicloro y acuohidroxicloro complejos y la formacion del compuesto precursor con excepcion del pentacloro complejo. La proporcion de este complejo disminuye unicamente despues de un aumento inicial, lo que indica que interviene como producto intermedio durante la regeneracion de otros productos. La regeneracion y presenta muchas fases separadas cuya tendencia general es una transicion de especies con un bajo contenido de Cl a otras con un elevado contenido de Cl, que conduce finalmente a un hexacloro complejo. Ello demuestra que el proceso de recocido consiste en la nueva penetracion de atomos (o iones) Cl en la esfera de ligandos, con el desplazamiento concomitante de H{sub 2}O y de OH (OH{sup -}). (author) [Russian] Imeetsja vozmozhnost' otdelenija posredstvom bumazhnogo jelektroforeza po krajnej mere 13 razlichnyh soedinenij otdachi, obrazujushhihsja Na{sub 2}IrCl{sub 6} * 6H{sub 2}O v rezul'tate jadernoj reakcii {sup 191}Ir (n, {gamma}) {sup 192}Ir. V to vremja kak bol'shinstvo iz nih imeet anionnyj harakter, dva vystupajut v kachestve kationov, mechennyh Ir{sup 192}. Izuchalos' povedenie jetih svobodnyh ot nositelja soedinenij po otnosheniju k vosstanoviteljam i okisliteljam i ih starenie v rastvore. Nezavisimo ot jetogo byl issledovan gidroliz geksahloridn'hh kompleksov treh- i chetyrehvalentnogo iridija, mechennyh Cl{sup 36} i Ir{sup 192} . Sravnenie jetih dvuh serij rezul'tatov, podkreplennoe posledujushhimi rezul'tatami, poluchennymi pri nejtronnom aktivacionnom analize, daet vozmozhnost' obnaruzhit', chto bol'shaja chast' produktov otdachi sushhestvuet v vide oktajedricheskih kompleksov Ir-III, soderzhashhih razlichnye kolichestva Cl{sup -}, H{sub 2}O i OH{sup -} v kachestve ligandov. Po vsej vidimosti, kristallizacionnaja voda igraet vazhnuju rol' v formirovanii soedinenija otdachi. Teplovoj otzhig jetih produktov pri temperature 120 Degree-Sign C privodit k bystromu umen'sheniju vyhoda akvohlor-, gidrohlor- i akvogidroksohlorkompleksov po sravneniju s obrazovaniem ishodnogo soedinenija. Iskljucheniem javljaetsja pentahlorkompleks, vyhod kotorogo umen'shaetsja tol'ko posle pervonachal'nogo uvelichenija, chto ukazyvaet na to, chto on javljaetsja promezhutochnym sredi drugih produktov, obrazujushhihsja vo vremja otzhiga. Gamma-radiacionnyj otzhig pokazyvaet mnogie prostye stadii processa, obshhej tendenciej kotoryh javljaetsja perehod ot kompleksov s men'shim kolichestvom Cl k kompleksam, soderzhashhim gorazdo bol'shee kolichestvo Cl, chto v konechnom schete privodit k obrazovaniju geksahlor kompleksa. Jeto pokazyvaet, chto v processe otzhiga v ligandnuju sferu vhodjat dopolnitel'nye atomy (ili iony) hlora, zameshhaja H{sub 2}O, a takzhe ON (ON-). (author)}
place = {IAEA}
year = {1965}
month = {Apr}
}