NEW METHOD FOR THE DETERMINATION OF THE TRIALKYLALUMINUM CONTENT IN ALUMOXANES

被引：80

作者：

BARRON, AR

机构：

[1] Department of Chemistry, Harvard University, Cambridge

来源：

ORGANOMETALLICS | 1995年 / 14卷 / 07期

关键词：

D O I：

10.1021/om00007a070

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Alkylalumoxanes (such as methylalumoxane, MAO) can contain ''free'' trialkylaluminum (AlR(3)). The relative ratio of the latter in any sample may be determined by P-31 NMR spectroscopy upon addition of excess PPh(3). The rapid exchange of free PPh(3) and Me(3)-Al . PPh(3) results in the P-31 NMR signal being a weighted average from which an accurate determination of AlR(3) can be made, based on an external standard. This analysis method has been. demonstrated for the determination of AlMe(3), AIEt(3), and Al(i)Bu(3) in methydalumoxane (MAO), ethylalumoxane (EAO), and isobutylalumoxane (IBAO) and bis(diisobutylaluminum oxide) (DBAO), respectively.

引用

页码：3581 / 3583

页数：3

共 13 条

[1] ADDUCTS OF TRIMETHYLALUMINUM WITH PHOSPHINE-LIGANDS - ELECTRONIC AND STERIC EFFECTS
BARRON, AR
[J]. JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1988, (12): : 3047 - 3050
[2] THE SYNTHESIS AND STRUCTURE OF A NEW TYPE OF BRIDGED HYDRIDO-ALUMINATE COMPLEX - 1,2-1,2-2,3-2,3-TETRA-MU-HYDRIDO-1,1,1,2,3,3,3-HEPTAHYDRIDO-1,1,1,3,3,3-HEXAKIS(TRIMETHYLPHOSPHINE)-1,3-DITUNGSTEN(IV)-2-ALUMINIUM
BARRON, AR
HURSTHOUSE, MB
MOTEVALLI, M
WILKINSON, G
[J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1985, (10) : 664 - 665
[3] SYNTHESIS AND STRUCTURE OF ALKYLALUMINOXANES
BOLESLAWSKI, M
SERWATOWSKI, J
[J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1983, 254 (02) : 159 - 166
[4] 3-COORDINATE ALUMINUM IS NOT A PREREQUISITE FOR CATALYTIC ACTIVITY IN THE ZIRCONOCENE - ALUMOXANE POLYMERIZATION OF ETHYLENE
HARLAN, CJ
BOTT, SG
BARRON, AR
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1995, 117 (24) : 6465 - 6474
[5] TERT-BUTYLALUMINUM HYDROXIDES AND OXIDES - STRUCTURAL RELATIONSHIP BETWEEN ALKYLALUMOXANES AND ALUMINA GELS
HARLAN, CJ
MASON, MR
BARRON, AR
[J]. ORGANOMETALLICS, 1994, 13 (08) : 2957 - 2969
[6] PI-BONDING IN 4-COORDINATE ALUMINUM ARYLOXIDE COMPOUNDS
HEALY, MD
ZILLER, JW
BARRON, AR
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1990, 112 (08) : 2949 - 2954
[7] VISUAL TITRIMETRIC DETERMINATION OF TOTAL REACTIVITY AND DIFFERENTIATION OF TRIALKYLALUMINUM AND DIALKYLALUMINUM HYDRIDE IN MIXTURES
Jordan, DE
[J]. ANALYTICAL CHEMISTRY, 1968, 40 (14) : 2150 - +
[8] HYDROLYSIS OF TRI-TERT-BUTYLALUMINUM - THE 1ST STRUCTURAL CHARACTERIZATION OF ALKYLALUMOXANES [(R2AL)2O]N AND (RALO)N
MASON, MR
SMITH, JM
BOTT, SG
BARRON, AR
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (12) : 4971 - 4984
[9] ALUMOXANES - SYNTHESIS, STRUCTURES, COMPLEXES AND REACTIONS
PASYNKIEWICZ, S
[J]. POLYHEDRON, 1990, 9 (2-3) : 429 - 453
[10] TOPOLOGICAL REORGANIZATION OF GALLIUM SULFIDO CLUSTERS
POWER, MB
ZILLER, JW
BARRON, AR
[J]. ORGANOMETALLICS, 1992, 11 (08) : 2783 - 2790

← 1 2 →