Koordinativ ungesättigte Dirutheniumkomplexe: Synthese und Kristallstrukturen von [Ru2(CO)n(μ-H)(μ-PtBu2)(μ-Ph2PCH2PPh2)] (n = 4; 5) und [Ru2(CO)4(μ-CH2)(μ-H)(μ-PtBu2)(μ-Ph2PCH2PPh2)]

Reductive NO dimerization to trans-hyponitrite in diruthenium complexes: Intramolecular attack of hyponitrite on a CO ligand

“…Solvents were dried over sodium-benzophenone ketyl or molecular sieves and were distilled under argon prior to use. Compound 1a was prepared as described previously [9]. The ligands dpppha, dpppra, and dppbza were prepared by a modified literature procedure [10].…”

“…NMR spectra were obtained using Jeol Eclipse 270 and 400 instruments operating at 270 and 400 ( 1 H) and at 109 MHz ( 31 P), respectively. Chemical shifts are given in ppm from SiMe 4 ( 1 H) or 85% H 3 9 Hz, mdpppr). Suitable single crystals of 2d for the X-ray diffraction study were grown from CH 2 Cl 2 /ethanol at room temperature.…”

“…Some years ago we described the coordinatively unsaturated complex [Ru 2 (CO) 4 (m-H)(m-PBu t 2 )(m-dppm)] (Ru]Ru) (1a, dppm ¼ Ph 2 PCH 2 PPh 2 ) [9]. Compound 1a was obtained in a kind of one-pot synthesis by reaction of [Ru 3 (CO) 12 ] with an excess of PBu…”

Combining two coordinatively unsaturated diruthenium cores by the tetradentate ligand (Ph2P)2NCH2C6H4CH2N(PPh2)2

“…During our studies on the coordination behavior of the sterically demanding secondary phosphane PHBu t 2 we observed a cluster degradation of [Ru 3 (CO) 12 (Ru]Ru) (5, dppm ¼ Ph 2 PCH 2 PPh 2 ) [2]. Recently we could apply these findings to a series of other bidentate organophosphorus ligands bridging the unsaturated diruthenium core [1].…”

Synthesis of electronically and coordinatively unsaturated complexes [Ru2(CO)4(μ-H)(μ-PtBu2)(μ-L2)] (L2 = biphosphanes)

“…Some years ago we described the synthesis and crystal structure of the electronically and coordinatively unsaturated complex [Ru 2 (CO) 4 (m-H)(m-P t Bu 2 )(m-dppm)] (Ru]Ru) (2a, dppm ¼ Ph 2 PCH 2 PPh 2 ) [1]. The latter compound was obtained in a kind of one-pot synthesis from [Ru 3 (CO) 12 ] and P t Bu 2 H affording the 32 VE complex [Ru 2 (CO) 4 (m-H)(m-P t Bu 2 )(P t Bu 2 H) 2 ] (1) in situ [2], followed by the substitution of both secondary phosphanes towards dppm.…”