Polynuclear silver(I) complexes of triphenylphosphine and 2-aminopyrimidine: Synthesis, structural characterization and spectroscopic properties

Crystal structure of bis(triphenylphosphine-κP)bis(μ2-1H,1′H-2,2′-biimidazole-κ3 N,N′:N′)disilver(I) bis(tetrafluoroborate), C48H42Ag2B2F8N8P2

“…The Ag I ion is coordinated by (i) the P atom of PPh 3 ligand with Ag1-P1 distance of 2.3796 Å, (ii) two N atoms of one H 2 biim ligand with Ag1-N1 distance of 2.2792 Å and Ag1-N3 distance of 2.5743 Å, (iii) one N atom of another H 2 biim ligand with Ag1-N3 distance of 2.607(3) Å. The two Ag-N bond distances are longer than the Ag-N distances in the similar complexes [5], while the Ag-P bond distance is similar to that of the reported complexs [6]. The distorted tetrahedron geometry around the silver atom is con rmed by the angles N1-Ag1-P1 of 141.76(7)°, N1-Ag1-N3 of 72.10(9)°, P1-Ag1-N3 of 127.22(6)°, N1-Ag1-N3 of 92.00(9)°and N3-Ag1-N3 of 90.26(8)°.…”

“…The distorted tetrahedron geometry around the silver atom is con rmed by the angles N1-Ag1-P1 of 141.76(7)°, N1-Ag1-N3 of 72.10(9)°, P1-Ag1-N3 of 127.22(6)°, N1-Ag1-N3 of 92.00(9)°and N3-Ag1-N3 of 90.26(8)°. The angle N1-Ag1-N3 is shorter than the similar complexes [6]. The H 2 biim ligands behave as bridging and chelating ligand to form a dinuclear complex.…”

Crystal structure of bis(triphenylphospine-κP)(methanol-κO)(tetrafluoroborate-κF)silver(I), [Ag(PPh3)2(CH3OH)BF4], C37H34AgBF4OP2

“…Especially, some compounds containing silver and triphenylphosphine have been synthesized [5][6][7]. Herein, we report the title complex[Ag(PPh 3 ) 2 (CH 3 OH)BF 4 ], which was unexpectedly obtained in an attempt to prepare a silver(I) complex of 2,5-dimercapto-1,3,4-thiadiazole and PPh 3 .…”

Synthesis, crystal structure, fluorescence and antioxidant properties of a binuclear Ag(I) complex based on the SPPh3 ligand

“…34 The Ag(I) complex exhibits emission maxima at 387 and 403 nm upon excitation at 350 nm, which are assiged to ligand-to-ligand charge-transfer (LLCT). 35 Compared with the emission of the free SPPh 3 , complex 1 shows a red shift of 2-4 nm. Based on the previous literature, red shifts might be attributed to the different architectures featuring different intensities of supramolecular interactions (such as π-π interactions).…”