Restoration of catalytic activity by replacement of a coordinated amide group: Synthesis and laser-induced luminescence studies of the phosphate diester transesterification catalyst [Eu(NBAC)](3+)

被引：37

作者：

Amin, S

Voss, DA

Horrocks, WD

Morrow, JR

机构：

[1] SUNY BUFFALO, DEPT CHEM, BUFFALO, NY 14260 USA

[2] PENN STATE UNIV, UNIVERSITY PK, PA 16802 USA

来源：

INORGANIC CHEMISTRY | 1996年 / 35卷 / 26期

关键词：

MACROCYCLIC COMPLEXES; EUROPIUM(III); LANTHANUM(III); CRYSTAL;

D O I：

10.1021/ic9516469

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The europium(III) complex of the octadentate tetraamide ligand is inactive as a catalyst for phosphate diester transesterification or for RNA cleavage. Replacement of one of the amide coordinating groups to form a new heptadentate ligand yields a europium(III) complex ([Eu(NBAC)](3+)) that is a very active catalyst for phosphate diester transesterification at 37 degrees C, pH 7.40. Laser-induced luminescence is used to study the number of bound water molecules and self-association of the [Eu(NBAC)](3+) complex as well as the dissociation of the complex in the presence of competing ligands. [GRAPHICS]

引用

页码：7466 / +

共 17 条

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