Complexes of lanthanides with heterocyclic carbenes

Details Complexes of lanthanides with heterocyclic carbenes Complexes of lanthanides with heterocyclic carbenes

1995-12-29

1998-01-06

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Radioactive metal containing

534 15, C07F 500

Patent

active

057056196

ABSTRACT:
A complex of the formula
wherein Ln is an ion in the oxidation state of 2, 3 or 4 of the lanthanide elements having the atomic numbers 21, 39 and from 57 to 71 in the Periodic Table of the Elements, with the exception of europium and promethium, as central atom, X.sup.(S) are monodentate or multidentate, charged or uncharged ligands bound to the central atom and L is a monocarbene or dicarbene ligand likewise bound to the central atom and which are derived from imidazole and/or pyrazole, A is a singly charged anion or the chemical equivalent of a multiple charged anion, b is an integer from 1 to 4, a is an integer from 1 to 4 . b and c is zero or an integer from 1 to 4.b and n is zero or an integer from 1 to 3.b having catalytic activity.

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