403823-41-6Relevant academic research and scientific papers
Three unique coordination geometries involving 1,2-dimethoxy-4,5-bis(2-pyridylethynyl)benzene
Fiscus,Shotwell,Layland,Smith,Zur Loye,Bunz
, p. 2674 - 2675 (2001)
Reaction of the new ligand 1,2-dimethoxy-4,5-bis(2-pyridylethynyl)benzene with different metal centers under similar reaction conditions led to three distinct structure formation processes: Molecular ring closure, dimerization, and polymer formation.
Synthesis of 4-[(2-imidazylethynyl)]-5-(2-pyridylethynyl)veratrole and characterization of the coordination complexes with silver(I) and palladium(II)
Nwachukwu, Chideraa I.,Bosch, Eric
, (2019/12/23)
We describe the design, synthesis and characterization of the ligand, 4-[(2-imidazylethynyl)]-5-(2-pyridylethynyl)veratrole as well its coordination complexes with silver(I) and palladium(II). 1H NMR titration clearly indicates that 1:1 coordination complexes are formed with both cations. The X-ray structure of the palladium dichloride complex confirms the trans coordination of palladium(II) and the silver trifluoromethanesulfonate complex confirms the linear coordination geometry about silver(I). [Formula presented]
Pd complexes with trans-chelating ligands composed of two pyridyl groups and rigid π-conjugated backbone
Jung, Miso,Suzaki, Yuji,Saito, Takashi,Shimada, Kyoichi,Osakada, Kohtaro
experimental part, p. 168 - 174 (2012/08/28)
1,2-Bis(2-pyridylethynyl)benzene derivatives, having two pyridyl groups and π-conjugated backbone, were prepared from the 1:2 Sonogashira reaction of 1,2-diiodobenzene with 2-alkynyl pyridines. The obtained ligands react with the palladium(II) complexes such as [PdCl2(cod)] and [PdCl 2(MeCN)2] to form the complexes with the ligands coordinated in a trans-chelating bidentate mode. The ligand obtained from 1,3-diiodobenzene and 2-alkynyl pyridine bridges two Pd(II) centers, yielding a dipalladium complex. A dichloropalladium complex with the trans-chelating ligand, containing two methoxy groups in the central arylene group, promotes coupling of phenyl lithium and of phenyl acetylene to yield the respective homo-coupling products. The ligand displacement reactions of {bis(2-pyridylethynyl)benzene}palladium(II) complex with phosphine and dinitrogen ligands, such as PPh3, dppe, dppb, en, tmeda, bpy and phen, takes place smoothly to release the trans-chelating ligand.
Pyridine-capped, oligomeric (o-phenyleneethynylene)s
Shotwell, Sandra,Windscheif, Paul M.,Smith, Mark D.,Bunz, Uwe H. F.
, p. 4151 - 4154 (2007/10/03)
(Chemical Equation Presented) The synthesis, optical properties, and solid-state structures of a series of o-(aryleneethynylene) oligomers containing three to seven aryl units is described. The main chain in all examples is composed of between one and fiv
