Reversible and Irreversible Coordination of Small Molecules to the Cp*Ru Fragment by a Facile Cleavage of the Ruthenium-Oxygen Bond of .eta.2P-O-Chelated (1,3-Dioxan-2-ylmethyl)diphenylphosphine

Amidophosphine‐stabilized palladium complexes catalyse Suzuki–Miyaura cross‐couplings in aqueous media

“…The cis atoms define angles of P1–Pd1–N1 = 94.14(12)° and Cl1–Pd1–Cl2 = 87.32(4)°, and there is a distortion of ideal square‐planar geometry resulting from the ring strain of the six‐membered metallacycle Pd1–P1–C1–C2–C7–N1. The Pd1‐P1 bond distance in 7 of 2.2522(10) Å is similar to those observed in phosphine and phosphite complexes of Pd(II) (2.2–2.4 Å) and in neutral complex 1 (2.2543(9) Å) . The value of Pd1‐N1 bond length being 2.097(3) Å defines a strong coordination of N to Pd atom and is comparable to those found in similar monomeric N‐coordinated Pd complexes (2.073–2.155 Å) .…”

Synthesis and Systematic Structural Analysis of Cationic Half‐Sandwich Ruthenium Chalcogenocarbonyl Complexes

“…The molecular structures of 2-CE were successfully determined by single-crystal X-ray diffraction analyses ( (8) ) [13] and [Cp*Ru(CS)(PPh 2 CH 2 C 4 H 7 O 2 ) 2 ][BPh 4 ]( Cp* = h 5 -C 5 Me 5 À ;R u ÀCS: 1.832(4);C ÀS: 1.554(4) ). [14] For 2-CSe,t he Ru1ÀC1 bond [1.827(4) ]i sl onger than that of half-sandwich complex [Cr(h 6 -C 6 H 5 CO 2 Me)(CO) 2 (CSe)] (1.786(11) ), [15] whereas the C1À Se1 bond (1.693(4) )i ss horter than that of the chromium CSe complex [1.728(10) ]. The C1ÀTe 1b ond in 2-CTe [1.908 (4) ] is comparable to the shortest hitherto reported value for CÀTe bonds in such CTec omplexes and related compounds (Table 3), and it is still shortert han the C=Te double bond in telluroketone complex[ W(CO) 5 (1,1,3,3-tetramethylindantellonek 1 Te )] (1.987 (5) ).…”

(η6‐Arene)ruthenium(II) Complexes with Hemilabile η3‐Dicyclohexylvinylphosphine (DCVP) and η3‐Diphenylvinylphosphine (DPVP) Phosphaallyl Ligands: Formation of an Unexpected Trinuclear Complex

“…Reactions of (1a) -(5a), with AgPF 6 When (1a)-(4a) were stirred in a 1:1 acetone/dichloromethane solution with AgPF 6 either starting materials or decomposition products were re- (1) 2.697(2) Ag -Cl (2) 2.682(2) P -Ru -Cl (1) 86.65 (10) 88.07 (14) 85.54(7) C(14) -Ru -Cl(1) 84.7(4) C(13) -Ru -Cl (1) 106.5(4) P -Ru -Cl (2) 84.43 (10) 84.79(7) Cl(1) -Ru -Cl (2) 87.69 (11) 84.46(7) Cl(1) -Ag -Cl (2) 103.24 ( . This may be attributed to the ring contribution, D R , due to chelate formation and the formation of a cationic complex.…”

“…Recently, the hemilabile properties of methyldiphenylphosphino-acetate (Ph 2 PCH 2 C-(=O)OMe), 2-diphenylphosphinoethylmethyl ether (Ph 2 PCH 2 CH 2 O -Me) and the iminophosphorane-phosphine (Ph 2 PCH 2 P(=NR)Ph 2 ) ligands coordinated to (Z 6 -arene)ruthenium(II) centers were investigated by Dixneuf and coworkers, [13] Lindner et al [14] and Gimeno and coworkers, [17] respectively. Despite the widespread application of arene-ruthenium(II) complexes, there are only a few studies regarding hemilabile functional phosphines coordinated to (Z 6 -arene)ruthenium(II) centers.…”