951165-71-2

Upstream product

• 942516-63-4 di[(2,4-bis-tert-butyl-1-methoxy-3-neopentylcyclopentadienyl)dichlororuthenium(III)] 
• 942516-63-4 [RuCl2(η5-1-methoxy-2,4-di-tert-butyl-3-neopentylcyclopentadienyl)]2 
• 1663-45-2 1,2-bis-(diphenylphosphino)ethane 

Relevant academic research and scientific papers

Ruthenium Bisammine Complex and Its Reaction with Aryl Azides

A ruthenium bisammine complex was formed in the reaction of ruthenium 1,4-dibenzyltetraazadiene complex with primary amines at room temperature, which was a versatile precursor for the synthesis of various Ru(II) complexes through ligand exchange reactions. In the reaction with azidobenzene, ruthenium 1,4-diphenyltetraaza-1,3-diene complex was formed, while ruthenium imido complexes were given in the reaction with bulky aryl azides such as 2-azido-1,3-dimethylbenzene and 2-azido-1,3-diisopropylbenzene. The ruthenium imido complexes showed high catalytic activity in the reaction of alkyl azides with primary amines to afford N-substituted imines.

Ruthenium half-sandwich complexes with sterically demanding cyclopentadienyl ligands

A chloro-bridged RuIII complex of formula [Cp ∧RuCl2]2 (Cp∧ = η5-1-methoxy-2,4-tert-butyl-3-neopentylcyclopentadienyl) (1) was obtained in a single step by reaction of [RuCl3(solv)n] with tert-butylacetylene in methanol. Complex 1 showed polymorphism and crystallized in two distinct forms: an isomer, 1a, with no significant metal-metal interactions (Ru...Ru = 3.684(1) or 3.743(1) A) and an isomer, 1b, in which the Ru atoms are 2.960(2) A apart from each other. In solution, a temperature-dependent equilibrium between the two isomers is established. When the reaction of [RuCl3(solv)n] with tert-butylacetylene was carried out in ethanol, the chloro-bridged dimer 2, with an ethoxy instead of a methoxy group attached to the cyclopentadienyl ligand, was formed. Complex 1 was found to be a versatile starting material for the synthesis of mononuclear half-sandwich complexes. With phosphine ligands or norbornadiene (nbd), the 16 e- complexes [Cp ∧RuCl(PCy3)] (3), [Cp∧RuCl(PPh 3)] (4), and [Cp∧RuCl-(PnBu3)] (5), the 17 e- complex [Cp∧RuCl2(PPh3)] (7), and the 18 e- complexes [Cp∧RuX(PPh 2RPPh2)] (X = H, Cl; R = CH2, C 2H4; 8-11) and [Cp∧RuCl(nbd)] (12) were obtained. Crystallography analyses show that the Ru-P bond lengths in these complexes are longer than in corresponding pentamethylcyclopentadienyl complexes.