Pd^II, Zn^II and Ag^I Complexes of Tetrakis(N‐7‐azaindolyl)benzene: Variation of Bonding Modes, Extended Structures and Luminescence

Abstract

PdII , Ag I and Zn II complexes of tetrakis(7-azaindolyl)benzene (ttab), [(PdCl 2 ) 2 (ttab)] (1), [(ZnCl 2 ) 2 (ttab)] (2), [Ag(NO 3 )] 2 -(ttab) (3a) and [Ag(NO 3 )(DMSO)] 2 (ttab) (3b) were synthesized and fully characterized by NMR spectroscopy, singlecrystal X-ray diffraction and elemental analyses. The ttab ligand in these complexes displays two different bonding modes. In the Pd II and Zn II complexes, the ttab ligand chelates to the metal center via two ortho 7-azaindolyl groups (the ortho mode). In contrast, in the Ag I complex, it chelates to the Ag I ion via two meta 7-azaindolyl groups (the meta mode). In the solid state, molecules of 1 and 2 form grid-

Antimicrobial properties of highly fluorinated silver(I) tris(pyrazolyl)borates

“…Structurally characterized Ag(I)-OSMe 2 complexes are rare, and to our knowledge, monometallic adducts like [HB(3,5-(CF 3 ) 2 Pz) 3 ]Ag(OSMe 2 ) have not been reported in literature [30][31][32][33][34]. These few structural reports of Ag(I)-OSMe 2 adducts show that the Ag-O rather than Ag-S mode of OSMe 2 -metal linkage is the most common.…”

Coordination Networks with Carborane Anions: Ag(I) and Nitrogen Bridging Ligands

“…DMSO has been previously reported as a ligand for Ag(i), for instance, in the complex [Ag 2 (NO 3 ) 2 (ttab)(DMSO) 2 ] (ttab = 1,2,4,5-tetrakis(7-azaindolyl)benzene) where the Ag-O distance of the coordinated DMSO is 2.403 Å. [20] Other known examples include those by Catalano et al who reported two structures with DMSO coordinated to the silver centre with Ag-O distances 2.284 Å and 2.532 Å. [21] All the reported distances are slightly shorter than the distances observed in 5.…”

Synthesis, structure, and luminescence properties of complex ZnLClb2 (L is 2-(3,5-dimethylpyrazol-1-yl)-4-methylquinoline)

“…17 Besides, the position of the band at 403 nm in the PL spectrum of complex 1 is close to that in the lumines cence spectrum of a ZnCl 2 complex with 1,2,4,5 tetrakis (7 azaindol 1 yl)benzene (λ max = 380 nm). 18 However, unlike compound 1, in the latter case the intensity of the luminescence spectrum is significantly lower than that of the free ligand. 18 One more example of the complex with blue luminescence is a compound of ZnCl 2 with 7 aza indole (λ max = 408, 434 nm).…”

“…18 However, unlike compound 1, in the latter case the intensity of the luminescence spectrum is significantly lower than that of the free ligand. 18 One more example of the complex with blue luminescence is a compound of ZnCl 2 with 7 aza indole (λ max = 408, 434 nm). 19 The results obtained confirm the expediency of the synthesis of new ZnCl 2 complexes with pyrazolylquinoline derivatives and the investigations of their PL.…”