A New Direction in Carbon-Rich Organometallic Wires:  Diruthenium Compounds Bridged byE-Hex-3-ene-1,5-diyn-diyl

Abstract

New organometallic wires were obtained from two diruthenium units bridged by E-hex-3-ene-1,5-diyn-dyl.

Synthesis, Characterization, and Electrochemistry of Diruthenium(III,II) and Monoruthenium(III) Complexes Containing Pyridyl-Substituted 2-Anilinopyridinate Ligands

“…Our laboratory 1-16 and others [17][18][19][20][21][22][23][24][25][26] have previously synthesized a variety of diruthenium and dirhodium complexes of the type [Ru 2 (L) 4 ] n or [Rh 2 (L) 4 ] n where n ) 0, +1, or +2 and L is 2-anilinopyridinate (ap) or substituted ap bearing electron-withdrawing or electron-donating groups at the ortho, meta, or para position on the anilino site of the ap ligand. Although four different isomeric forms of the metalmetal-bonded compounds are theoretically possible, 4,6,11,13-15 the majority of characterized diruthenium or dirhodium * To whom correspondence should be addressed.…”

Molecular Assembly with Axial Cyanato Ligands and Paddlewheel Tetracarboxylatodiruthenium(II,III) Fragments

“…This behaviour could be explained on the basis of two factors: i) the different distances between the diruthenium units in 1 and 2 or ii) the nature of the linker OCN -or [Ag(OCN) 2 ] -. However, a strong antiferromagnetic coupling between Ru 2 (II,III) units with a long linker has been found by Ren et al [17] Thus, although Ren's complex and 2 are different, we think that the difficulty of the electronic exchange through the diamagnetic [Ag(OCN) 2 ] -group is probably the main factor in the low magnetic coupling in complex 2.…”

Linear Trimer of Diruthenium Linked by Butadiyn‐Diyl Units: A Unique Electronic Wire

“…The [Ru 2 (DMBA) 4 (CCR) 2 ] type compounds are generally diamagnetic ( S =0) 3. The magnetic properties of 1 a would be dominated by two {Ru 2 (DiMeOap) 4 } termini ( S =3/2) with a room temperature χ m T value around 3.75 cm 3 K mol −1 if the ‐(C) 2 ‐Ru 2 (DMBA) 4 ‐(CC) 2 ‐ fragment remains S =0 and functions as a weak mediator of spin coupling 17. However, compound 1 a exhibits a significantly higher χ m T value of 5.67 cm 3 K mol −1 at 300 K, implying the presence of additional unpaired electrons in 1 a .…”