Remarkably Robust Group 4 Metal Half-Sandwich Complexes Containing Two Higher Alkyl Ligands:  X-ray Structure and Reactivity of the Di-n-butyl Complex [Hf(η5:η1:η1-C5Me4SiMe2NCH2CH2OMe)nBu2]

1997 ◽  
Vol 16 (22) ◽  
pp. 4765-4767 ◽  
Author(s):  
Francisco Amor ◽  
Thomas P. Spaniol ◽  
Jun Okuda
Keyword(s):  
Sandwich Complexes ◽  
X Ray ◽  
Group 4 ◽  
Group 4 Metal ◽  
Half Sandwich

New group 4 half sandwich complexes containing triethanolamine ligand for polyethylene

2006 ◽  
Vol 691 (6) ◽  
pp. 1121-1125 ◽  
Author(s):  
Ki-Soo Lee ◽  
Youngjo Kim ◽  
Son-Ki Ihm ◽  
Youngkyu Do ◽  
Sunwoo Lee
Keyword(s):  
Sandwich Complexes ◽  
Group 4 ◽  
Half Sandwich

Facile Synthesis of Pentamethylcyclopentadienyl Ruthenium Half-Sandwich Complexes by Naphthalene Displacement

2018 ◽  
Vol 71 (4) ◽  
pp. 289 ◽  
Author(s):  
Jeremy Stone ◽  
David Jago ◽  
Alexandre Sobolev ◽  
Mark Spackman ◽  
George Koutsantonis
Keyword(s):  
Single Crystal ◽  
Organometallic Chemistry ◽  
Synthetic Methods ◽  
Sandwich Complexes ◽  
Facile Synthesis ◽  
X Ray ◽  
Wide Range ◽  
Structure Determinations ◽  
Half Sandwich

Ruthenium half-sandwich complexes are central in a wide range of diverse applications in the field of organometallic chemistry. As such, exploration of their preparation and reactivity is crucial for development of their chemistry. Herein, we present alternative synthetic methods for the preparation of Cp*Ru(dppm)Cl, Cp*Ru(dppe)Cl, Cp*Ru(dppf)Cl, [Cp*Ru(COD)(MeCN)]BF4, and [Cp*Ru(bpy)(MeCN)]BF4 (dppm = 1,2-bis(diphenylphosphino)methane; dppe = 1,2-bis(diphenylphosphino) ethane; dppf = 1,2-bis(diphenylphosphino)ferrocene; COD = 1,5-cyclooctadiene; bpy= 2,2′-bipyridine), starting from the easily accessible [Cp*Ru(η6-C10H8)]BF4. The single-crystal X-ray structure determinations for [Cp*Ru(COD)(MeCN)]BF4, and [Cp*Ru(bpy)(MeCN)]BF4 are also presented.

Neue 3-Imidazolin-1-oxyl-Radikale mit pyridyl und chinolylhaltigen 4-(2-Aminovinyl)-Substituenten und Palladium, Platin und Ruthenium-Komplexe mit diesen 4-Amino-1-azadien-Liganden / New 3-Imidazoline-1-oxyl Radicals with Pyridyl and Quinolyl Containing 4-(2-Aminovinyl) Substituents and Palladium, Platinum and Ruthenium Complexes of these 4-Amino-1-aza-diene Ligands

2004 ◽  
Vol 59 (6) ◽  
pp. 639-654
Author(s):  
Christian Sommer ◽  
Heinrich Nöth ◽  
Werner Ponikwar ◽  
Wolfgang Beck
Keyword(s):  
Lithium Salt ◽  
Palladium Complexes ◽  
X Ray Diffraction ◽  
Sandwich Complexes ◽  
Nitroxide Radicals ◽  
X Ray ◽  
Imidazoline Derivatives ◽  
Diene Ligands ◽  
Half Sandwich ◽  
Palladium Platinum

The addition of pyridyl and quinolyl nitriles to the 4-lithium salt of 1-hydroxy-2.2.4.5.5- pentamethyl-3-imidazoline with a silyl protected OH group affords 4-aminovinyl substituted imidazoline derivatives 3, 6, 9, 12, and 15 which can be converted into the corresponding nitroxide radicals 5, 8, 11, 14 and 17. The 4-amino-1-azadiene residues of these imidazoline nitroxides form a series of chelates of palladium (22 - 26, 29 - 32) and with ruthenium half sandwich complexes (33 - 36). Coordination of the pyridine or quinoline N atom has been observed in mononuclear (19 - 21) and trinuclear (27, 28) palladium complexes and the structure of 19 was determined by X-ray diffraction.

Chiral Sulfur Functional Groups as Definers of the Chirality at the Metal in Ir and Rh Half-Sandwich Complexes: A Combined CD/X-ray Study

2017 ◽  
Vol 23 (58) ◽  
pp. 14523-14531 ◽  
Author(s):  
Marta G. Avello ◽  
María Frutos ◽  
María C. de la Torre ◽  
Alma Viso ◽  
Marina Velado ◽  
...  
Keyword(s):  
Functional Groups ◽  
Sandwich Complexes ◽  
X Ray ◽  
Half Sandwich

Synthesis and Crystal Structures of Dinuclear Trichloro(tetramethylcyclopentadienyl)titanium Complexes

2006 ◽  
Vol 71 (2) ◽  
pp. 164-178 ◽  
Author(s):  
Lenka Lukešová ◽  
Róbert Gyepes ◽  
Vojtech Varga ◽  
Jiří Pinkas ◽  
Michal Horáček ◽  
...  
Keyword(s):  
Diffraction Analysis ◽  
Crystal Structures ◽  
X Ray Diffraction ◽  
Titanium Complexes ◽  
Sandwich Complexes ◽  
Common Procedure ◽  
X Ray ◽  
Half Sandwich

Dinuclear half-sandwich complexes [{TiCl3(η5-C5Me4)}2SiMe2] (2) and [{TiCl3(η5-C5Me4SiMe2CH2)}2] (4) were prepared by synproportionation of ansa-titanocene dichlorides [TiCl2{(η5-C5Me4)2SiMe2}] (1) and [TiCl2(η5-C5Me4SiMe2CH2)2] (3), respectively, with TiCl4. Compound 3 was synthesized from 1,2-bis(chlorodimethylsilyl)ethane, 1,2,3,4-tetramethylcyclopentadienyllithium, and [TiCl3(thf)3] by a common procedure. Crystal structures of 2, 3, and 4 were determined by X-ray diffraction analysis.

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