Ru2(DMBA)4(BF4)2 and Ru2(DMBA)4(NO3)2: the first examples of diruthenium compounds containing BF4− and NO3− as ligands

Bis‐alkynyl Diruthenium Compounds with Built‐in Electronic Asymmetry: Toward an Organometallic Aviram–Ratner Diode

“…[26,27] It was soon discovered that [Ru 2 A C H T U N G T R E N N U N G (dmba) 4 X 2 ] (X= NO 3 or BF 4 ) reacts with an unactivated alkyne HC CR in the presence of Et 3 N at room temperature and in an ambient atmosphere. [25,28] The use of unactivated alkyne proved to be advantageous in the high yield synthesis of compounds containing strong electrophilic functional groups, such as NO 2 and CN, and the insensitivity of the reaction toward air/ moisture enabled easy monitoring of reaction progress. However, the original protocol had shortcomings, including the use of terminal acetylenes in large excess (> 5 equiv) and extended reaction time (overnight).…”

“…[Ru 2 A C H T U N G T R E N N U N G (dmba) 4 A C H T U N G T R E N N U N G (NO 3 ) 2 ], [28] 4-Me 2 NC 6 H 4 CCH, and 4-O 2 NC 6 H 4 CCH were prepared according to the literature. [30,49] The nitration of 1,5-diiodo-1,4-dimethoxybenzene [50] yielded 4-O 2 N-2,5-(MeO) 2 C 6 H 4 I, [29] which was converted to 4-O 2 N-2,5-(OMe) 2 C 6 H 2 CCH by the Sonogashira reaction.…”

Synthesis, Structure and Magnetic and Electrochmical Properties of Tetrakis(benzamidato)diruthenium(II,III) Tetrafluoroborate

“…In [Ru2(HNOCPh)4(BF4)(H2O)]·2(acetone), both axial positions of the Ru2 5+ unit are occupied with fluorine (BF4 − ) and oxygen (H2O) atoms with Ru1-F1 and Ru2-O5 distances of 2.3265(19) and 2.280(2) Å, respectively. To our knowledge, only two complexes [Ru2 III,III (DMBA)4(BF4)2] (DMBA − = N,N′-dimethylbenzamidinate ion (Scheme 2b)) and [Ru2 II,III (ap)(BF4)]·2THF (ap − = 2-anilinopyridinate ion (Scheme 2c)) have been confirmed by the X-ray crystal structure analysis for the axial coordination of BF4 − to the lantern-type diruthenium complex [24,25]. The Ru-Fax bond distances are 2.366(3) and 2.…”

The First Open‐Paddlewheel Structures in Diruthenium Chemistry: Examples of Intermediate Magnetic Behaviour between Low and High Spin in Ru25+ Species

“…[23] A dirutheniumA C H T U N G T R E N N U N G (III) compound has also been reported in which two BF 4 À ligands are unidentate, coordinated to the axial positions, [Ru 2 A C H T U N G T R E N N U N G (DMBA) 4 A C H T U N G T R E N N U N G (BF 4 ) 2 ] (DMBA = N,N'-dimethylbenzamidinate), with Ru À F lengths of 2.389(3) and 2.366(3) . [24] The other BF 4 À ligand in 4·THF is linked through the F7 atom to the water axial ligand by a hydrogen bond. 4 ) 2 (5) for X-ray experiments were not obtained, but the structure of this complex is probably similar to the species [Mo 2 - [25] which has been very useful for building higher nuclearity structures.…”