Synthesis and structural characterization of copper(I) halide complexes containing bis(azol-1-yl)methane derived bisphosphines

Versatile Coordination Modes of 2,6‐Bis(2‐(diphenylphosphanyl)‐1H‐imidazol‐1‐yl)pyridine in Cu(I) and Au(I) Complexes

“…2.34 Å) radii, precluding any significant metal-metal interaction. [16] The complex [{2,6-(PPh 2 -C 3 H 2 N 2 ) 2 C 5 H 3 N}{Cu 3 Br 2 }] n Cl (4) displays a rare polymeric (zig-zag) 1D chain structure (Figure 5b). The asymmetric unit consists of three crystallographically independent Cu(I) ions, two bromide ions, one chloride ion and bisphosphine 2.…”

“…[14,15] Studies on these complexes show that the origin of luminescence is due to the transitions from mixed halide-toligand charge transfer (XLCT) and metal-to-ligand charge transfer (MLCT) excited states or either XLCT/MLCT of the transitions. [16][17][18] Earlier reports suggested that copper(I) ions with d 10 closedshell electronic configurations show high affinity towards nitrogen donors and irregular geometry with coordination numbers 2-5, which controls the self-assembly. [18][19][20] The ligand framework and the nature of donor atoms are very important to fabricate structure specific self-assembly and desired coordination networks.…”

“…[25] Some of the known 1D coordination polymers of copper(I) complexes supported by phosphine appendage with N-heterocyclic ligands are listed in Figure 1. In most of these complexes (I-V) [16,18,23,26,27] copper(I) ion show four coordinated tetrahedral arrangement. The reported compound VI is the first illustration of a rare 1D copper(I) coordination polymer stabilized by phosphine appended with N-heterocycles.…”

“…Nevertheless, the coordination chemistry of pyridine-imidazole ligands, which integrate the features of both pyridine and imidazole, is less extensive. [28,29] As a part of our interest [7,16,30,31] and of the others, [32][33][34][35] we describe herein the synthesis, copper(I) and gold(I) complexes of 2,6-bis(2-(diphenylphosphanyl)-1H-imidazol-1yl)pyridine (2) and their photophysical properties.…”

Palladium(II) and copper(I) complexes of wide angle bisphosphine, 1,4-bis((diphenylphosphino)methyl)benzene

“…[1][2][3][4] Tertiary phosphines and short-bite bisphosphines are appropriate ligands for stabilizing the transition metals in their low coordination numbers and/or unusual oxidation states as they can be employed in homogeneous catalysis. 5 In contrast, large bite or wide angle bisphosphines can form 1D, 2D or 3D-coordination polymers 6 with appropriate metal precursors and find applications in heterogeneous catalysis. 7 As a part of our interest in developing different types of phosphorus based ligands for catalytic [8][9][10][11] and material applications, 12,13 herein we describe the synthesis and palladium and copper complexes of a wide angle bisphosphine, 1,4-bis((diphenylphosphino)methyl) benzene.…”