287097-09-0

Basic information

• Product Name: [(η5-C5H3)2(Si(CH3)2)2]Ru2(CO)4
• Synonyms: [(η5-C5H3)2(Si(CH3)2)2]Ru2(CO)4
• CAS NO: 287097-09-0
• Molecular Weight: 556.65
• Mol File: 287097-09-0.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: [(η5-C5H3)2(Si(CH3)2)2]Ru2(CO)4(CAS DataBase Reference)
• NIST Chemistry Reference: [(η5-C5H3)2(Si(CH3)2)2]Ru2(CO)4(287097-09-0)
• EPA Substance Registry System: [(η5-C5H3)2(Si(CH3)2)2]Ru2(CO)4(287097-09-0)

Safety Data

• Hazardous Substances Data: 287097-09-0(Hazardous Substances Data)

Upstream product

• 124-40-3 dimethyl amine 
• 100-46-9 benzylamine 
• 20732-26-7 lithium anilide 
• 110-89-4 piperidine 
• 123-75-1 pyrrolidine 
• 74-89-5 methylamine 
• 7664-41-7 ammonia 
• 110-91-8 morpholine 

Downstream Products

• 405158-44-3 [(η5-C5H3)2(SiMe2)2]Ru2(CO)3(PPh3) 
• 405158-42-1 [(η5-C5H3)2(SiMe2)2]Ru2(CO)3(P(C6H11)3) 
• 405158-59-0 [(η5-C5H3)2(SiMe2)2Ru2(CO)2(μ-CO)(η1:η1-μ-C(Ph)C(Ph)] 
• 405158-65-8 [(η5-C5H3)2(SiMe2)2Ru2(CO)3(μ-C=CHPh)] 

Relevant articles and documents

Amine attack on the carbonyl ligands of the protonated dicyclopentadienyl-bridged diruthenium complex [{(η5-C5H3)2(SiMe 2)2}Ru2(CO)4(μ-H)]+

Complexes [{(η5-C5H3)2(SiMe 2)2}Ru2(CO)4(μ-H)]+ (1H+BF4-, 1D+TfO-), with a protonated Ru-Ru bond, were prepared by protonation of {(η5-C5H3)2(SiMe 2)2}Ru2(CO)4 (1) with HBF4·Et2O or CF3SO3D. The bridging proton in 1H+ is removed only very slowly by amine bases even though it is thermodynamically acidic (pKaAN = 6.5 (±0.2)). This remarkable kinetic inertness of the bridging proton allows amines (NH3, NH2CH3, NH(CH3)2, morpholine, piperidine, pyrrolidine) to react with 1H+ by attacking the CO ligand to give a formamide (HC(=O)NR2) and the CO-substituted product {(η5-C5H3)2(SiMe 2)2}Ru2(CO)3(NHR2) (2). Thus, protonation of the metal-metal bond in 1H+ promotes reactions of the CO ligand that are not possible in the unprotonated 1. A proposed mechanism for these reactions is supported by kinetic studies of the reaction of 1D+TfO- with morpholine in nitromethane at 20.0 °C, as well as by deuterium-labeling experiments. The molecular structure of {(η5-C5H3)2-(SiMe 2)2}Ru2(CO)3(NH2CH 3) (2f), as determined by an X-ray diffraction investigation, is also presented.