Binuclear oxalamidinate complexes (MePd)2(oxam) and homoleptic complexes of the type [(THF)nLi4(Me8)M2] and [(THF)4Li2(Ph4)M] (M=Pd, Ni): synthesis, structures and catalytic CC linking reactions

Homoleptic Organoderivatives of High‐Valent Nickel(III)

“…[24] That crystal structure, however, shows important covalent cation/anion interactions, which might possibly affect the observed geometry for the [ 2À species. The crystal and molecular structures of the perfluorophenyl compound 1 ( Figure 1) were established by singlecrystal X-ray diffraction methods.…”

“…In compound 1, the absorption attributable to nA C H T U N G T R E N N U N G (C À F) appears as a strong, sharp band at 947 cm 2À , are now well represented. A number of such compounds have been isolated with organyl groups R in which the C-donor atom can adopt one of the following hybridizations: sp 3 [R = CH 3 , [21] CH 2 NMe 2 , [22] CH 2 (piperidinyl) [23] ], sp 2 [R = Ph, [24] C 6 H 3 A C H T U N G T R E N N U N G (OMe) 2 -2,6 [25] ], and sp (R = C CH, C CMe, C CPh, [26] C CCH 2 CMe 2 CN, C CCH 2 CPh 2 CN, [27] C CCN [28] ). In relation to our perhalophenyl derivatives 1 and 2 it is fortunate that the molecular structure of the closely related compound…”

“…[24] Considerably longer are the Ni ii À CA C H T U N G T R E N N U N G (sp 3 ) distances (203.2(4) and 202.7(4) pm average values) in the homoleptic alkyl deriva- [22] piperidinyl), [23] whereas the Ni …”

Transition metal catalyzed cross-coupling of aryl Grignard reagents with aryl fluorides via Pd- or Ni-activation of the C–F bond: an efficient synthesis of unsymmetrical biaryls – application of microwave technology in ligand and catalyst screening

“…Efforts have been made to expand the synthetic scope of these coupling reactions to include aryl electrophiles such as benzonitriles [5], anisoles [6], and aryl carbamates [7], which were previously regarded as unreactive in these transition-metal cross-coupling procedures. Within the aryl halide series of compounds, aryl fluorides have been known to be the least reactive toward standard cross-coupling protocols [9][10][11][12][13]. Indeed, activation of a C-F bond is an extremely challenging process due to the inherent strength of this bond [8].…”

Nickel(II) complexes of the type [RM(oxam)MR] (oxam: oxalamidinate, R=n-butyl, n-hexyl): the first binuclear n-alkyl nickel complexes

“…Recently we described the first organometallics with these ligands containing late metals (Ni, Pd) [2,6,7]. Furthermore, we constructed the first tri-and tetranuclear complexes [1] in which two different metals are linked by oxam bridges.…”