Synthesis and structural study of [{Pd(C6H4CH2N(CH3)2)}2(μ-Br) (μ-X)] complexes (X = hydroxide, amide or thiolate)

Synthesis of Terminal and Bridging Acetonyl Complexes of Palladium(II). Crystal Structures of [{(AsPh3)(C6F5)Pd}2{μ-CH2C(O)CH3}2], [(AsPh3)(C6F5)Pd{CH2C(O)CH3}(t-BuNC)], and [(o-C6H4CH2NMe2)Pd{O,O‘-CH(CO2Et)2}]

“…On protonation of the hydroxo complex, it is likely that an intermediate aqua complex is formed, but we have not been able to detect this species. The presence of the hydroxo ligand in complex 1 is manifested by the observation of the characteristic IR absorption at 3560 cm -1 (OH str) and a high-field proton resonance at δ −2.01. − The ν (CO) absorptions are observed in the vicinity of 1560 cm -1 . The analysis of the 1 H NMR spectrum gave more structural information on 1 .…”

A comparative study of the coordination of saccharinate, thiosaccharinate and benzisothiozolinate ligands to cyclometalated [Pd(Me2NCH2C6H4-κN,C)(μ-Cl)]2: Molecular structures of [Pd(Me2NCH2C6H4-κN,C)(µ-X)]2 (X = sac, bit and tsac) and [Pd(Me2NCH2C6H4-κN,C)Cl(ampyH-κN)] (ampyH = 2-amino-3-methylpyridine)

“…On this basis we might then suggest that in 5 the sac ligand binds only through oxygen as a functionalised alkoxide ligand [1]. While as far as we are aware such alkoxide species have not been isolated, the related hydroxide complexes [Pd 2 (Me 2 NCH 2 C 6 H 4 - 2 N,C) 2 (-X)(-OH)] (X = Cl, Br) have both been prepared and crystallographically characterised [53,54]. The O-sac and S-tsac binding in 5 and 6 respectively may also account for their quite different colour; off-white and brown.…”

Synthesis, characterization and crystal structures of the first pentacoordinate nickel(II) complexes containing N,S-donor ligands †

“…When a transition metal hydroxo complex is used, the direct reaction between the hydroxo complex and the thiol should lead to the formation of the thiolate complex. Thus we have prepared µ-thiolate complexes 20-23 by reaction between the binuclear complexes 23 22 and thiols. This method has also been used for incorporation of heterocyclic thiones into transition metal complexes.…”