Patent number: 6291655
Abstract: In binuclear metal hydride complexes of the formuula (I)
the substituents and indices have the following meanings:
M is scandium, yttrium, lanthanum or a lanthanide metal,
R is hydrogen, halogen, C1-C20-alkyl, C3-C1-cycloalkyl, C6-C15-aryl or C3-C30-organosilyl, where two adjacent radicals R can also form a saturated or unsaturated, cyclic or heterocyclic group having from 4 to 18 carbon atoms,
Z is —SiR′2—, —CR′2—, —GeR′2—, —SnR′2—, —BR′— or —O—,
R′ is C1-C20-alkyl, C3-C10-cycloalkyl, C6-C15-aryl or alkylaryl having from 1 to 10 carbon atoms in the alkyl part and from 6 to 10 carbon atoms in the aryl part,
m is 1 or 2,
X is —O—, —S—, —NR″—, —PR″—, —OR″, —SR″, —NR″2 or —PR″2,
R″ is hydrogen, C1-C20-alkyl, C3-C10-cycloalkyl, C6-C15-aryl, alkylaryl having from 1 to 10
Type:
Grant
Filed:
August 12, 1999
Date of Patent:
September 18, 2001
Assignee:
BASF Aktiengesellschaft
Inventors:
Jun Okuda, Kai Hultzsch, Michael Geprägs
