schliessen

Filtern

 

Bibliotheken

Discrete Divalent Rare-Earth Cationic ROP Catalysts: Ligand-Dependent Redox Behavior and Discrepancies with Alkaline-Earth Analogues in a Ligand-Assisted Activated Monomer Mechanism

The first solvent-free cationic complexes of the divalent rare-earth metals, [{RO}REII]+[A]- (REII=YbII, 1; EuII, 2) and [{LO}REII]+[A]- ([A]-=[H2N{B(C6F5)3}2]-; REII=YbII, 3; EuII, 4), have been prepared by using highly chelating monoanionic aminoether-fluoroalkoxide ({RO}-) and aminoether-phenolat... Full description

Journal Title: Chemistry Mar 18, 2013, Vol.19(12), pp.3986-94
Main Author: Liu, Bo
Other Authors: Roisnel, Thierry , Maron, Laurent , Carpentier, Jean-François , Sarazin, Yann
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 09476539 ; E-ISSN: 15213765 ; DOI: 10.1002/chem.201204340
Link: http://search.proquest.com/docview/1317931643/?pq-origsite=primo
Zum Text:
SendSend as email Add to Book BagAdd to Book Bag
Staff View
recordid: proquest1317931643
title: Discrete Divalent Rare-Earth Cationic ROP Catalysts: Ligand-Dependent Redox Behavior and Discrepancies with Alkaline-Earth Analogues in a Ligand-Assisted Activated Monomer Mechanism
format: Article
creator:
  • Liu, Bo
  • Roisnel, Thierry
  • Maron, Laurent
  • Carpentier, Jean-François
  • Sarazin, Yann
subjects:
  • Catalysis–Chemistry
  • Cations, Divalent–Chemistry
  • Coordination Complexes–Chemistry
  • Crystallography, X-Ray–Chemistry
  • Hydrogen-Ion Concentration–Chemistry
  • Kinetics–Chemistry
  • Ligands–Chemistry
  • Metals, Rare Earth–Chemistry
  • Models, Molecular–Chemistry
  • Molecular Conformation–Chemistry
  • Oxidation-Reduction–Chemistry
  • Polymerization–Chemistry
  • Earth
  • Ligands
  • Cations, Divalent
  • Coordination Complexes
  • Ligands
  • Metals, Rare Earth
ispartof: Chemistry, Mar 18, 2013, Vol.19(12), pp.3986-94
description: The first solvent-free cationic complexes of the divalent rare-earth metals, [{RO}REII]+[A]- (REII=YbII, 1; EuII, 2) and [{LO}REII]+[A]- ([A]-=[H2N{B(C6F5)3}2]-; REII=YbII, 3; EuII, 4), have been prepared by using highly chelating monoanionic aminoether-fluoroalkoxide ({RO}-) and aminoether-phenolate ({LO}-) ligands. Complexes 1 and 2 are structurally related to their alkaline-earth analogues [{RO}AE]+[A]- (AE=Ca, 5; Sr, 6). Yet, the two families behave very differently during catalysis of the ring-opening polymerization (ROP) of L-lactide (L-LA) and trimethylene carbonate (TMC) performed under immortal conditions with excess BnOH as an exogenous chain-transfer agent. The ligand was found to strongly influence the behavior of the REII complexes during ROP catalysis. The fluoroalkoxide REII catalysts 1 and 2 are not oxidized under ROP conditions, and compare very favorably with their Ca and Sr congeners 5 and 6 in terms of activity (turnover frequency (TOF) in the range 200-400molL-LA (molEuh-1))...
language: eng
source:
identifier: ISSN: 09476539 ; E-ISSN: 15213765 ; DOI: 10.1002/chem.201204340
fulltext: fulltext
issn:
  • 09476539
  • 0947-6539
  • 15213765
  • 1521-3765
url: Link


@attributes
ID1302730404
RANK0.07
NO1
SEARCH_ENGINEprimo_central_multiple_fe
SEARCH_ENGINE_TYPEPrimo Central Search Engine
LOCALfalse
PrimoNMBib
record
control
sourcerecordid1317931643
sourceidproquest
recordidTN_proquest1317931643
sourcesystemPC
pqid1317931643
galeid321496921
display
typearticle
titleDiscrete Divalent Rare-Earth Cationic ROP Catalysts: Ligand-Dependent Redox Behavior and Discrepancies with Alkaline-Earth Analogues in a Ligand-Assisted Activated Monomer Mechanism
creatorLiu, Bo ; Roisnel, Thierry ; Maron, Laurent ; Carpentier, Jean-François ; Sarazin, Yann
ispartofChemistry, Mar 18, 2013, Vol.19(12), pp.3986-94
identifier
subjectCatalysis–Chemistry ; Cations, Divalent–Chemistry ; Coordination Complexes–Chemistry ; Crystallography, X-Ray–Chemistry ; Hydrogen-Ion Concentration–Chemistry ; Kinetics–Chemistry ; Ligands–Chemistry ; Metals, Rare Earth–Chemistry ; Models, Molecular–Chemistry ; Molecular Conformation–Chemistry ; Oxidation-Reduction–Chemistry ; Polymerization–Chemistry ; Earth ; Ligands ; Cations, Divalent ; Coordination Complexes ; Ligands ; Metals, Rare Earth
descriptionThe first solvent-free cationic complexes of the divalent rare-earth metals, [{RO}REII]+[A]- (REII=YbII, 1; EuII, 2) and [{LO}REII]+[A]- ([A]-=[H2N{B(C6F5)3}2]-; REII=YbII, 3; EuII, 4), have been prepared by using highly chelating monoanionic aminoether-fluoroalkoxide ({RO}-) and aminoether-phenolate ({LO}-) ligands. Complexes 1 and 2 are structurally related to their alkaline-earth analogues [{RO}AE]+[A]- (AE=Ca, 5; Sr, 6). Yet, the two families behave very differently during catalysis of the ring-opening polymerization (ROP) of L-lactide (L-LA) and trimethylene carbonate (TMC) performed under immortal conditions with excess BnOH as an exogenous chain-transfer agent. The ligand was found to strongly influence the behavior of the REII complexes during ROP catalysis. The fluoroalkoxide REII catalysts 1 and 2 are not oxidized under ROP conditions, and compare very favorably with their Ca and Sr congeners 5 and 6 in terms of activity (turnover frequency (TOF) in the range 200-400molL-LA (molEuh-1))...
languageeng
source
version9
lds50peer_reviewed
links
openurl$$Topenurl_article
openurlfulltext$$Topenurlfull_article
backlink$$Uhttp://search.proquest.com/docview/1317931643/?pq-origsite=primo$$EView_record_in_ProQuest_(subscribers_only)
search
creatorcontrib
0Liu, Bo
1Roisnel, Thierry
2Maron, Laurent
3Carpentier, Jean-François
4Sarazin, Yann
titleDiscrete Divalent Rare-Earth Cationic ROP Catalysts: Ligand-Dependent Redox Behavior and Discrepancies with Alkaline-Earth Analogues in a Ligand-Assisted Activated Monomer Mechanism
descriptionThe first solvent-free cationic complexes of the divalent rare-earth metals, [{RO}REII]+[A]- (REII=YbII, 1; EuII, 2) and [{LO}REII]+[A]- ([A]-=[H2N{B(C6F5)3}2]-; REII=YbII, 3; EuII, 4), have been prepared by using highly chelating monoanionic aminoether-fluoroalkoxide ({RO}-) and aminoether-phenolate ({LO}-) ligands. Complexes 1 and 2 are structurally related to their alkaline-earth analogues [{RO}AE]+[A]- (AE=Ca, 5; Sr, 6). Yet, the two families behave very differently during catalysis of the ring-opening polymerization (ROP) of L-lactide (L-LA) and trimethylene carbonate (TMC) performed under immortal conditions with excess BnOH as an exogenous chain-transfer agent. The ligand was found to strongly influence the behavior of the REII complexes during ROP catalysis. The fluoroalkoxide REII catalysts 1 and 2 are not oxidized under ROP conditions, and compare very favorably with their Ca and Sr congeners 5 and 6 in terms of activity (turnover frequency (TOF) in the range 200-400molL-LA (molEuh-1))...
subject
0Catalysis–Chemistry
1Cations, Divalent–Chemistry
2Coordination Complexes–Chemistry
3Crystallography, X-Ray–Chemistry
4Hydrogen-Ion Concentration–Chemistry
5Kinetics–Chemistry
6Ligands–Chemistry
7Metals, Rare Earth–Chemistry
8Models, Molecular–Chemistry
9Molecular Conformation–Chemistry
10Oxidation-Reduction–Chemistry
11Polymerization–Chemistry
12Earth
13Ligands
14Cations, Divalent
15Coordination Complexes
16Metals, Rare Earth
general
0English
1Wiley Subscription Services, Inc.
210.1002/chem.201204340
3Health & Medical Collection (Alumni edition)
4Health & Medical Collection
5Engineered Materials Abstracts
6METADEX
7Materials Science Database
8Environmental Science Database (ProQuest)
9Materials Research Database
10Technology Research Database
11ProQuest Central
12ProQuest Environmental Science Collection
13ProQuest Hospital Collection
14ProQuest Materials Science Collection
15ProQuest Natural Science Collection
16ProQuest Technology Collection
17Hospital Premium Collection (Alumni edition)
18ProQuest SciTech Collection
19ProQuest Health & Medical Complete
20Agricultural & Environmental Science Database
21Materials Science & Engineering Database
22Natural Science Collection
23ProQuest Central (new)
24ProQuest Central K-12
25ProQuest Central Korea
26SciTech Premium Collection
27Technology Collection
28Health Research Premium Collection
29Health Research Premium Collection (Alumni edition)
30ProQuest Central Essentials
31ProQuest Central China
32ProQuest One Academic
33Materials Science Index (ProQuest)
34Environmental Science Collection (ProQuest)
35Materials Science Collection (ProQuest)
sourceidproquest
recordidproquest1317931643
issn
009476539
10947-6539
215213765
31521-3765
rsrctypearticle
creationdate2013
addtitleChemistry
searchscope
01006072
11006761
21007067
31007393
41007528
51007851
61007945
71008886
81009127
91009386
101009714
1110000014
1210000015
1310000022
1410000039
1510000043
1610000047
1710000049
1810000050
1910000053
2010000118
2110000119
2210000120
2310000155
2410000156
2510000201
2610000203
2710000209
2810000234
2910000250
3010000253
3110000255
3210000256
3310000257
3410000258
3510000260
3610000265
3710000268
3810000270
3910000271
4010000281
4110000300
4210000348
4310000352
4410000354
4510000355
4610000360
47proquest
scope
01006072
11006761
21007067
31007393
41007528
51007851
61007945
71008886
81009127
91009386
101009714
1110000014
1210000015
1310000022
1410000039
1510000043
1610000047
1710000049
1810000050
1910000053
2010000118
2110000119
2210000120
2310000155
2410000156
2510000201
2610000203
2710000209
2810000234
2910000250
3010000253
3110000255
3210000256
3310000257
3410000258
3510000260
3610000265
3710000268
3810000270
3910000271
4010000281
4110000300
4210000348
4310000352
4410000354
4510000355
4610000360
47proquest
lsr43
01006072false
11006761false
21007067false
31007393false
41007528false
51007851false
61007945false
71008886false
81009127false
91009386false
101009714false
1110000014false
1210000015false
1310000022false
1410000039false
1510000043false
1610000047false
1710000049false
1810000050false
1910000053false
2010000118false
2110000119false
2210000120false
2310000155false
2410000156false
2510000201false
2610000203false
2710000209false
2810000234false
2910000250false
3010000253false
3110000255false
3210000256false
3310000257false
3410000258false
3510000260false
3610000265false
3710000268false
3810000270false
3910000271false
4010000281false
4110000300false
4210000348false
4310000352false
4410000354false
4510000355false
4610000360false
startdate20130318
enddate20130318
citationpf 3986 pt 94 vol 19 issue 12
lsr30VSR-Enriched:[pages, galeid, pqid, orcidid]
sort
titleDiscrete Divalent Rare-Earth Cationic ROP Catalysts: Ligand-Dependent Redox Behavior and Discrepancies with Alkaline-Earth Analogues in a Ligand-Assisted Activated Monomer Mechanism
authorLiu, Bo ; Roisnel, Thierry ; Maron, Laurent ; Carpentier, Jean-François ; Sarazin, Yann
creationdate20130318
lso0120130318
facets
frbrgroupid5932799651641116197
frbrtype5
languageeng
creationdate2013
topic
0Catalysis–Chemistry
1Cations, Divalent–Chemistry
2Coordination Complexes–Chemistry
3Crystallography, X-Ray–Chemistry
4Hydrogen-Ion Concentration–Chemistry
5Kinetics–Chemistry
6Ligands–Chemistry
7Metals, Rare Earth–Chemistry
8Models, Molecular–Chemistry
9Molecular Conformation–Chemistry
10Oxidation-Reduction–Chemistry
11Polymerization–Chemistry
12Earth
13Ligands
14Cations, Divalent
15Coordination Complexes
16Metals, Rare Earth
collection
0Health & Medical Collection (Alumni edition)
1Health & Medical Collection
2Engineered Materials Abstracts
3METADEX
4Materials Science Database
5Environmental Science Database (ProQuest)
6Materials Research Database
7Technology Research Database
8ProQuest Central
9ProQuest Environmental Science Collection
10ProQuest Hospital Collection
11ProQuest Materials Science Collection
12ProQuest Natural Science Collection
13ProQuest Technology Collection
14Hospital Premium Collection (Alumni edition)
15ProQuest SciTech Collection
16ProQuest Health & Medical Complete
17Agricultural & Environmental Science Database
18Materials Science & Engineering Database
19Natural Science Collection
20ProQuest Central (new)
21ProQuest Central K-12
22ProQuest Central Korea
23SciTech Premium Collection
24Technology Collection
25Health Research Premium Collection
26Health Research Premium Collection (Alumni edition)
27ProQuest Central Essentials
28ProQuest Central China
29ProQuest One Academic
30Materials Science Index (ProQuest)
31Environmental Science Collection (ProQuest)
32Materials Science Collection (ProQuest)
prefilterarticles
rsrctypearticles
creatorcontrib
0Liu, Bo
1Roisnel, Thierry
2Maron, Laurent
3Carpentier, Jean-François
4Sarazin, Yann
jtitleChemistry
toplevelpeer_reviewed
delivery
delcategoryRemote Search Resource
fulltextfulltext
addata
aulast
0Liu
1Roisnel
2Maron
3Carpentier
4Sarazin
aufirst
0Bo
1Thierry
2Laurent
3Jean-François
4Yann
auinit1
0B.
1T.
2L.
3J.
4Y.
au
0Liu, Bo
1Roisnel, Thierry
2Maron, Laurent
3Carpentier, Jean-François
4Sarazin, Yann
atitleDiscrete Divalent Rare-Earth Cationic ROP Catalysts: Ligand-Dependent Redox Behavior and Discrepancies with Alkaline-Earth Analogues in a Ligand-Assisted Activated Monomer Mechanism
jtitleChemistry
risdate20130318
volume19
issue12
spage3986
epage94
pages3986-3994
issn09476539
eissn15213765
formatjournal
genrearticle
ristypeJOUR
abstractThe first solvent-free cationic complexes of the divalent rare-earth metals, [{RO}REII]+[A]- (REII=YbII, 1; EuII, 2) and [{LO}REII]+[A]- ([A]-=[H2N{B(C6F5)3}2]-; REII=YbII, 3; EuII, 4), have been prepared by using highly chelating monoanionic aminoether-fluoroalkoxide ({RO}-) and aminoether-phenolate ({LO}-) ligands. Complexes 1 and 2 are structurally related to their alkaline-earth analogues [{RO}AE]+[A]- (AE=Ca, 5; Sr, 6). Yet, the two families behave very differently during catalysis of the ring-opening polymerization (ROP) of L-lactide (L-LA) and trimethylene carbonate (TMC) performed under immortal conditions with excess BnOH as an exogenous chain-transfer agent. The ligand was found to strongly influence the behavior of the REII complexes during ROP catalysis. The fluoroalkoxide REII catalysts 1 and 2 are not oxidized under ROP conditions, and compare very favorably with their Ca and Sr congeners 5 and 6 in terms of activity (turnover frequency (TOF) in the range 200-400molL-LA (molEuh-1))...
copWeinheim
pubWiley Subscription Services, Inc.
doi10.1002/chem.201204340
urlhttp://search.proquest.com/docview/1317931643/
orcidid0000-0003-2653-8557: 0000-0003-1121-0292
date2013-03-18