A supported catalyst complex comprising: a support; and a ruthenium metal complex comprising a N-heterocyclic carbene ligand and a chelating alkylidene ligand; wherein, at least one linker is attached to the support and to the N-heterocyclic carbene ligand and at least one linker is attached to the support and to the chelating alkylidene ligand, wherein the ruthenium metal complex is represented by the structure wherein: M is ruthenium; X 1 and X 2 are independently selected from anionic ligands; preferably halides L 1 is a N-heterocyclic carbene ligand; Y is O; R 5, R 6, R 7, and R 8 are each, independently, selected from the group consisting of hydrogen, halogen, alkyl, alkenyl, alkynyl, aryl, heteroaryl, alkoxy, alkenyloxy, aryloxy, alkoxycarbonyl, alkylamino, alkylthio, aminosulfonyl, monoalkylaminosulfonyl, dialkylaminosulfonyl, alkylsulfonyl, cyano, isocyanate, hydroxyl, amine, or -A-Si (CH 2)nCH 3) 3, any combination of R 5, R 6, R 7, and R 8 can be linked to form one or more cyclic groups; n is 1; Z is a group selected from hydrogen, alkyl, aryl, functionalized alkyl, functionalized aryl where the functional group(s) may independently be one or more or the following: alkoxy, aryloxy, halogen, carboxylic acid, aldehyde, nitrate, cyano, isocyanate, hydroxyl, amine; and the linker is-A-Si(O(CH 2)nCH 3) 3, wherein n is an integer ranging from 0-3 and A is a divalent hydrogen moiety selected from alkylene and arylalkylene, wherein the alkyl portion of the alkylene and arylalkylene groups can be linear or branched, cyclic or acyclic, and substituted or unsubstituted, wherein the aryl portion of the arylakylene can be subsutituted or unsubstituted; the catalyst being obtainable by linking the complex with the linking groups, which serve to provide attachment to the support after reaction therewith. a support; and a ruthenium metal complex comprising a N-heterocyclic carbene ligand and a chelating alkylidene ligand; wherein, at least one linker is attached to the support and to the N-heterocyclic carbene ligand and at least one linker is attached to the support and to the chelating alkylidene ligand, wherein the ruthenium metal complex is represented by the structure wherein: M is ruthenium; X 1 and X 2 are independently selected from anionic ligands; preferably halides L 1 is a N-heterocyclic carbene ligand; Y is O; R 5, R 6, R 7, and R 8 are each, independently, selected from the group consisting of hydrogen, halogen, alkyl, alkenyl, alkynyl, aryl, heteroaryl, alkoxy, alkenyloxy, aryloxy, alkoxycarbonyl, alkylamino, alkylthio, aminosulfonyl, monoalkylaminosulfonyl, dialkylaminosulfonyl, alkylsulfonyl, cyano, isocyanate, hydroxyl, amine, or -A-Si (CH 2)nCH 3) 3, any combination of R 5, R 6, R 7, and R 8 can be linked to form one or more cyclic groups; n is 1; Z is a group selected from hydrogen, alkyl, aryl, functionalized alkyl, functionalized aryl where the functional group(s) may independently be one or more or the following: alkoxy, aryloxy, halogen, carboxylic acid, aldehyde, nitrate, cyano, isocyanate, hydroxyl, amine; and the linker is-A-Si(O(CH 2)nCH 3) 3, wherein n is an integer ranging from 0-3 and A is a divalent hydrogen moiety selected from alkylene and arylalkylene, wherein the alkyl portion of the alkylene and arylalkylene groups can be linear or branched, cyclic or acyclic, and substituted or unsubstituted, wherein the aryl portion of the arylakylene can be subsutituted or unsubstituted; the catalyst being obtainable by linking the complex with the linking groups, which serve to provide attachment to the support after reaction therewith. M is ruthenium; X 1 and X 2 are independently selected from anionic ligands; preferably halides L 1 is a N-heterocyclic carbene ligand; Y is O; R 5, R 6, R 7, and R 8 are each, independently, selected from the group consisting of hydrogen, halogen, alkyl, alkenyl, alkynyl, aryl, heteroaryl, alkoxy, alkenyloxy, aryloxy, alkoxycarbonyl, alkylamino, alkylthio, aminosulfonyl, monoalkylaminosulfonyl, dialkylaminosulfonyl, alkylsulfonyl, cyano, isocyanate, hydroxyl, amine, or -A-Si (CH 2)nCH 3) 3, any combination of R 5, R 6, R 7, and R 8 can be linked to form one or more cyclic groups; n is 1; Z is a group selected from hydrogen, alkyl, aryl, functionalized alkyl, functionalized aryl where the functional group(s) may independently be one or more or the following: alkoxy, aryloxy, halogen, carboxylic acid, aldehyde, nitrate, cyano, isocyanate, hydroxyl, amine; and the linker is-A-Si(O(CH 2)nCH 3) 3, wherein n is an integer ranging from 0-3 and A is a divalent hydrogen moiety selected from alkylene and arylalkylene, wherein the alkyl portion of the alkylene and arylalkylene groups can be linear or branched, cyclic or acyclic, and substituted or unsubstituted, wherein the aryl portion of the arylakylene can be subsutituted or unsubstituted; the catalyst being obtainable by linking the complex with the linking groups, which serve to provide attachment to the support after reaction therewith.