Competitive study of the reactions Br + R F I → IBr + R F and determination of bond dissociation energies D (R F −I) where R F = CF 3 , C 2 F 5 , n ‐;C 3 F 7 , i ‐C 3 F 7 , and n ‐C 4 F 9
The overall photobromination reactions have been studied using a competitive technique. Relative Arrhenius parameters were obtained for the rate‐determining step equation image These were placed on an absolute basis using previous‐absolute values of A and E for R F I=CF 3 I. The activation energies...
Gespeichert in:
| Veröffentlicht in: | International journal of chemical kinetics 1975-03, Vol.7 (2), p.287-300 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 300 |
|---|---|
| container_issue | 2 |
| container_start_page | 287 |
| container_title | International journal of chemical kinetics |
| container_volume | 7 |
| creator | Okafo, Ernest N. Whittle, Eric |
| description | The overall photobromination reactions
have been studied using a competitive technique. Relative Arrhenius parameters were obtained for the rate‐determining step
equation image
These were placed on an absolute basis using previous‐absolute values of
A
and
E
for R
F
I=CF
3
I. The activation energies were used to calculate bond dissociation energies
D
(RI) with the following results:
R
F
−
E
16
D(R
F
−I)(kcal/mole)
CF
3
I
10.8
52.6
C
2
F
5
I
8.8
50.6
n
‐C
3
F
7
I
7.4
49.2
i
‐C
3
F
7
I
7.5
49.2
n
‐C
4
F
9
I
6.7
48.4
E
16
from [1]
The
D
(R
I) are compared with related
D
(RI) and it is concluded that for a given alkyl group R
H
and the corresponding perfuloroalkyl group R
F
,
D
(R
I) >
D
(R
I) whereas it has previously been found that
D
(R
X;) <
D
(R
X) where X is not iodine. |
| doi_str_mv | 10.1002/kin.550070210 |
| format | Article |
| fullrecord | <record><control><sourceid>crossref</sourceid><recordid>TN_cdi_crossref_primary_10_1002_kin_550070210</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>10_1002_kin_550070210</sourcerecordid><originalsourceid>FETCH-LOGICAL-c820-6c7c3f767f2c91125416ec9007146d2cd1c26c575821165d17fe51dcd401b9a53</originalsourceid><addsrcrecordid>eNpFkcFKw0AQhhdRsFaP3ueoaOrMJrtpEA8ajQYKgvQe0s3GrtpEdqPSmyfxKH0nX6RPYmKlnma-j50Z2J-xfcIBIfKTR1MNhEAMkRNusB5hFHqBRNpkPRT-0BuilNtsx7kHRIwiEj32HdezZ92YxrxqcM1LMYe6hGaqwepcNaauHFxYOII7SCCF5ccC0jXnVQGFbrSdmSrv3nazk7qzxrlamZXUlbb3Rju4hINubPm5SA_hbaqt_l1zBnECPhxDDLxF0XYVLN-_TuPWJhC2bDr-x-5wtVJBq6JdtlXmT07v_dU-GydX4_jGG91ep_H5yFNDjp5UofLLUIYlVxERFwFJraL2wyiQBVcFKS6VCMWQE0lRUFhqQYUqAqRJlAu_z7zVWmVr56wus2drZrmdZ4RZF0HWRpCtI_B_AApDc24</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Competitive study of the reactions Br + R F I → IBr + R F and determination of bond dissociation energies D (R F −I) where R F = CF 3 , C 2 F 5 , n ‐;C 3 F 7 , i ‐C 3 F 7 , and n ‐C 4 F 9</title><source>Wiley Online Library Journals Frontfile Complete</source><creator>Okafo, Ernest N. ; Whittle, Eric</creator><creatorcontrib>Okafo, Ernest N. ; Whittle, Eric</creatorcontrib><description>The overall photobromination reactions
have been studied using a competitive technique. Relative Arrhenius parameters were obtained for the rate‐determining step
equation image
These were placed on an absolute basis using previous‐absolute values of
A
and
E
for R
F
I=CF
3
I. The activation energies were used to calculate bond dissociation energies
D
(RI) with the following results:
R
F
−
E
16
D(R
F
−I)(kcal/mole)
CF
3
I
10.8
52.6
C
2
F
5
I
8.8
50.6
n
‐C
3
F
7
I
7.4
49.2
i
‐C
3
F
7
I
7.5
49.2
n
‐C
4
F
9
I
6.7
48.4
E
16
from [1]
The
D
(R
I) are compared with related
D
(RI) and it is concluded that for a given alkyl group R
H
and the corresponding perfuloroalkyl group R
F
,
D
(R
I) >
D
(R
I) whereas it has previously been found that
D
(R
X;) <
D
(R
X) where X is not iodine.</description><identifier>ISSN: 0538-8066</identifier><identifier>EISSN: 1097-4601</identifier><identifier>DOI: 10.1002/kin.550070210</identifier><language>eng</language><ispartof>International journal of chemical kinetics, 1975-03, Vol.7 (2), p.287-300</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c820-6c7c3f767f2c91125416ec9007146d2cd1c26c575821165d17fe51dcd401b9a53</citedby><cites>FETCH-LOGICAL-c820-6c7c3f767f2c91125416ec9007146d2cd1c26c575821165d17fe51dcd401b9a53</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids></links><search><creatorcontrib>Okafo, Ernest N.</creatorcontrib><creatorcontrib>Whittle, Eric</creatorcontrib><title>Competitive study of the reactions Br + R F I → IBr + R F and determination of bond dissociation energies D (R F −I) where R F = CF 3 , C 2 F 5 , n ‐;C 3 F 7 , i ‐C 3 F 7 , and n ‐C 4 F 9</title><title>International journal of chemical kinetics</title><description>The overall photobromination reactions
have been studied using a competitive technique. Relative Arrhenius parameters were obtained for the rate‐determining step
equation image
These were placed on an absolute basis using previous‐absolute values of
A
and
E
for R
F
I=CF
3
I. The activation energies were used to calculate bond dissociation energies
D
(RI) with the following results:
R
F
−
E
16
D(R
F
−I)(kcal/mole)
CF
3
I
10.8
52.6
C
2
F
5
I
8.8
50.6
n
‐C
3
F
7
I
7.4
49.2
i
‐C
3
F
7
I
7.5
49.2
n
‐C
4
F
9
I
6.7
48.4
E
16
from [1]
The
D
(R
I) are compared with related
D
(RI) and it is concluded that for a given alkyl group R
H
and the corresponding perfuloroalkyl group R
F
,
D
(R
I) >
D
(R
I) whereas it has previously been found that
D
(R
X;) <
D
(R
X) where X is not iodine.</description><issn>0538-8066</issn><issn>1097-4601</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1975</creationdate><recordtype>article</recordtype><recordid>eNpFkcFKw0AQhhdRsFaP3ueoaOrMJrtpEA8ajQYKgvQe0s3GrtpEdqPSmyfxKH0nX6RPYmKlnma-j50Z2J-xfcIBIfKTR1MNhEAMkRNusB5hFHqBRNpkPRT-0BuilNtsx7kHRIwiEj32HdezZ92YxrxqcM1LMYe6hGaqwepcNaauHFxYOII7SCCF5ccC0jXnVQGFbrSdmSrv3nazk7qzxrlamZXUlbb3Rju4hINubPm5SA_hbaqt_l1zBnECPhxDDLxF0XYVLN-_TuPWJhC2bDr-x-5wtVJBq6JdtlXmT07v_dU-GydX4_jGG91ep_H5yFNDjp5UofLLUIYlVxERFwFJraL2wyiQBVcFKS6VCMWQE0lRUFhqQYUqAqRJlAu_z7zVWmVr56wus2drZrmdZ4RZF0HWRpCtI_B_AApDc24</recordid><startdate>197503</startdate><enddate>197503</enddate><creator>Okafo, Ernest N.</creator><creator>Whittle, Eric</creator><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>197503</creationdate><title>Competitive study of the reactions Br + R F I → IBr + R F and determination of bond dissociation energies D (R F −I) where R F = CF 3 , C 2 F 5 , n ‐;C 3 F 7 , i ‐C 3 F 7 , and n ‐C 4 F 9</title><author>Okafo, Ernest N. ; Whittle, Eric</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c820-6c7c3f767f2c91125416ec9007146d2cd1c26c575821165d17fe51dcd401b9a53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1975</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Okafo, Ernest N.</creatorcontrib><creatorcontrib>Whittle, Eric</creatorcontrib><collection>CrossRef</collection><jtitle>International journal of chemical kinetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Okafo, Ernest N.</au><au>Whittle, Eric</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Competitive study of the reactions Br + R F I → IBr + R F and determination of bond dissociation energies D (R F −I) where R F = CF 3 , C 2 F 5 , n ‐;C 3 F 7 , i ‐C 3 F 7 , and n ‐C 4 F 9</atitle><jtitle>International journal of chemical kinetics</jtitle><date>1975-03</date><risdate>1975</risdate><volume>7</volume><issue>2</issue><spage>287</spage><epage>300</epage><pages>287-300</pages><issn>0538-8066</issn><eissn>1097-4601</eissn><abstract>The overall photobromination reactions
have been studied using a competitive technique. Relative Arrhenius parameters were obtained for the rate‐determining step
equation image
These were placed on an absolute basis using previous‐absolute values of
A
and
E
for R
F
I=CF
3
I. The activation energies were used to calculate bond dissociation energies
D
(RI) with the following results:
R
F
−
E
16
D(R
F
−I)(kcal/mole)
CF
3
I
10.8
52.6
C
2
F
5
I
8.8
50.6
n
‐C
3
F
7
I
7.4
49.2
i
‐C
3
F
7
I
7.5
49.2
n
‐C
4
F
9
I
6.7
48.4
E
16
from [1]
The
D
(R
I) are compared with related
D
(RI) and it is concluded that for a given alkyl group R
H
and the corresponding perfuloroalkyl group R
F
,
D
(R
I) >
D
(R
I) whereas it has previously been found that
D
(R
X;) <
D
(R
X) where X is not iodine.</abstract><doi>10.1002/kin.550070210</doi><tpages>14</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0538-8066 |
| ispartof | International journal of chemical kinetics, 1975-03, Vol.7 (2), p.287-300 |
| issn | 0538-8066 1097-4601 |
| language | eng |
| recordid | cdi_crossref_primary_10_1002_kin_550070210 |
| source | Wiley Online Library Journals Frontfile Complete |
| title | Competitive study of the reactions Br + R F I → IBr + R F and determination of bond dissociation energies D (R F −I) where R F = CF 3 , C 2 F 5 , n ‐;C 3 F 7 , i ‐C 3 F 7 , and n ‐C 4 F 9 |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-22T21%3A31%3A08IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-crossref&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Competitive%20study%20of%20the%20reactions%20Br%20+%20R%20F%20I%20%E2%86%92%20IBr%20+%20R%20F%20and%20determination%20of%20bond%20dissociation%20energies%20D%20(R%20F%20%E2%88%92I)%20where%20R%20F%20=%20CF%203%20,%20C%202%20F%205%20,%20n%20%E2%80%90;C%203%20F%207%20,%20i%20%E2%80%90C%203%20F%207%20,%20and%20n%20%E2%80%90C%204%20F%209&rft.jtitle=International%20journal%20of%20chemical%20kinetics&rft.au=Okafo,%20Ernest%20N.&rft.date=1975-03&rft.volume=7&rft.issue=2&rft.spage=287&rft.epage=300&rft.pages=287-300&rft.issn=0538-8066&rft.eissn=1097-4601&rft_id=info:doi/10.1002/kin.550070210&rft_dat=%3Ccrossref%3E10_1002_kin_550070210%3C/crossref%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |