Exploring the reactivity of an N-pyrazole, P-phosphine hybrid ligand with Cu(I), Ag(I) and Au(I) precursors

Silver and gold

“…173 The reactivity of N-pyrazole P-phosphine hybrid ligands with Ag and Au precursors has been explored. 174 Depending on the second ligand mono-or di-silver complexes are formed with carborane dicyclohexylphosphine. 175 A binuclear [Ag 2 {(diphenylphosphanylmethyl) 2 aminothiocarbamide} 2 ](NO 3 ) 2 complex was isolated, in which two silver centres are bridged by a pair of the heteroscorpionate ligands via four Ag-m-S and four Ag-P bonds.…”

Synthesis and characterization of copper(I) compounds incorporating pyrazole-derived ligands: A study on carbon–carbon coupling reaction

“…Regarding the ligands of copper catalysts, various chelated nitrogen donor atoms have also been studied and reviewed in the past years [24,25] and some neutral and mono-anionic ligands are shown in Scheme 1. Pyrazoles are extensively used as N-donor ligands to different metal ions [26][27][28]. The structures and properties of copper pyrazolates are of significant interest which can exhibit a variety of molecular frames with exo-bidentate coordination of the pyrazolate moiety with the copper atoms [29].…”

Structural characterization of a new polymeric Cu(II) complex with unexpected chlorinated pyrazole ligand

“…Pyrazole is a common ligand in the synthesis of interesting polynuclear metal complexes because it presents suitable chemical properties (the anion of pyrazole iswell suited for its coordination tometal ions via the N,N′-bridging mode) [8]. In the course of our studies on pyrazolederived ligands, some polynuclear complexes with Cd(II) and Hg(II) [15], Ag(I) [16], Rh(I) [17], Ni(II) [18], Pd(II) [19][20][21], Cu(II) [22], and Zn(II) [23] have been isolated and characterized. Recently, we have shown that the dinuclear complex, [CuCl2(L2)]2 (L2 = 1-[2-(ethylamino)methyl] pyrazole), is centrosymmetric, and the two copper ions are coordinated by two chlorine bridge atoms.…”