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US 2003/0166921 A1Published application
Multielectron redox catalysts
OwnerMichael J. Therien, James T. Fletcherinventors
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Abstract
This invention relates to synthetic multiporphyrin and multimacrocyclic systems that bind metal ions. Cofacial (porphinato)metal compounds that demonstrate excellent utility in catalyzing multielectron redox transformations are presented. These materials can function as homogeneous or heterogeneous catalysts, or as electrocatalysts when interfaced to an appropriate electrode material.
Claims15
5,6-Bis(porphinato)zinc(II)indane;
- wherein said porphinato group is substituted with at least on compound of the group consisting of C1-C12 alkyl, C6-C20 aryl, perhaloalkyl, C2-C12 alkenyl, and C≡C—R;
- wherein R is H, C1-C12 alkyl, or C1-C20 aryl;
- and
- said alkyl and aryl groups are optionally substituted with alkyl, aryl, alkoxy, or aryloxy.
1 more element
A compound having formula (1), (2), or (3):
- 2
- wherein M and M′ are metal ions and RB1-RB8 are independently selected from the group consisting of H, C1-C12 alkyl, C6-C20 aryl, perhaloalkyl, C2-C12 alkenyl, and C≡C—R;
- wherein R is H, C1-C12 alkyl, or C1-C20 aryl;
- wherein each alkyl or aryl group may be optionally substituted with alkyl, aryl, alkoxy, or aryloxy;
- provided that at least one of the following conditions applies:
- (a) at least one of RB1-RB8 or one of RA1-RA8 is perhaloalkyl;
- or
- (b) at least one of RB1-RB8 or one of RA1-RA8 is ethyne, alkynyl, oligynyl, or has the formula C≡CR, or
- (c) at least one of RA1-RA8 is electron withdrawing relative hydrogen provided at least one of RB1-RB8 is not H;
- or
- (d) one of RB1-RB8 is electron withdrawing relative hydrogen;
- or
- (e) one of RA1-RA8 is electron withdrawing relative hydrogen provided all of RA1-RA8 are not perfluorophenyl;
- or
- (f) all of RA1-RA8 are electron withdrawing relative hydrogen provided at least one of RB1-RB8 is not H;
- (g) at least one of RB1-RB8 or one of RA1-RA8 is halooalkyl;
- or
- (h) at least one of RB1-RB8 or one of RA1-RA8 is ethene, ethynyl, oligoenyl, or has the formula C(RC)═C(RD)(RE) where RC, RD, and RE are independently H, C1-C2 alkyl, or C1-C20 aryl;
15 more elements
Dependencies are inferred from the claim text.