Phosphane Complexes of Alkaline Earth Metals

Rhodium(I) complexes with κP coordinated ω-phosphinofunctionalized alkyl phenyl sulfide, sulfoxide and sulfone ligands and their reactions with sodium bis(trimethylsilyl)amide and Ag[BF4]

“…Such a shortening of the PeC bonds is also found in complexes bearing an anionic dppm eH -k 2 P,P 0 ligand which is explained in terms of an ylidic bonding model with some charge delocalization within the PCP moiety [47]. Moreover, the fact that …”

Cyclopentadienyl-Free Calcium Alkyls with Heteroelement-Substituted Anionic Phosphane Ligands: Synthesis and Structure of a Trialkyl Calcate(II) and of an Organocalcium Heterocubane

“…After evaporating the solvent under reduced pressure, the residue was washed twice with toluene (20 mL) and dried in vacuo; yield: 2.74 g (6.6 mmol, 95 %); m.p. 192 8C (sealed capillary, decomp); elemental analysis calcd for C 22 Synthesis of 3: a solution of nBuLi in hexane (2.5 m ; 2.5 mL) was added dropwise to 2-MeOC 6 H 4 CH 2 PPh' 2 (2.12 g, 6.34 mmol) dissolved in Et 2 O (30 mL). The reaction mixture was stirred for 3 h at room temperature then NaOtBu (0.69 g, 6.34 mmol) was added.…”

On the Reactivity of Rhodium(I) Complexes with κP-Coordinated γ-Phosphino-Functionalized Propyl Phenyl Sulfide Ligands: Routes to Cyclic Rhodium Complexes with κC,κP- and κP,κS-Coordinated Ligands as Well as Bis(diphenylphosphino)methanide Ligands

“…The Rh−P3 bond in 18 ·THF (2.3130(4) Å, P3 is trans to P1) is of a similar length as the Rh−P bonds of the dppm −H -κ 2 P , P ′ ligand (2.342(3)/2.324(3) Å) in complex [Rh(dppm −H -κ 2 P , P ′)(dppm-κ 2 P , P ′)]; thus the deprotonation of the dppm ligand is accompanied by a Rh−P bond elongation (dppm: Rh−P 2.293(3)/2.237(4) Å) . On the other hand, the P−C bond lengths in 18 ·THF (1.725(2)/1.728(2) Å) are clearly shortened compared to those of (nondeprotonated) dppm ligands (1.839(2)−1.853(4) Å), − which can be explained in terms of an ylidic bonding model with some charge delocalization within the PCP moiety . Additionally, the transannular Rh···C34 distance of 3.014(2) Å clearly demonstrates that there is no bond between these two atoms.…”