Synthesis, Structures, and Luminescent Properties of d¹⁰ Group 12 Metal Complexes with Substituted 2,2′‐Bipyridine Ligands

Abstract

Keywords: Group 12 metal complexes / 2,2Ј-Bipyridine / Solid-state structures / Luminescence Four d 10 group 12 metal complexes, 6-(2-methoxyphenyl)-2,2Ј-bipyridinezinc dichloride (2a), -mercury dichloride (2b), 6-[2-(dimethylamino)phenyl]-2,2Ј-bipyridinezinc dichloride (2c), and -mercury dichloride (2d), were synthesized and the structures determined by single-crystal X-ray crystallography. Complexes 2a and 2b are four-coordinate and adopt a distorted tetrahedral geometry, while complexes 2c and 2d

Diversified architectures of one-dimensional zinc(II) and cadmium(II) coordination polymers incorporating bipyridyl ligands: Syntheses, structures, theoretical studies, fluorescent and nonlinear optical properties

“…12) when excited at 367 nm and 384 nm, respectively. The emission of CP 3 could be assigned to the intraligand p-p ⁄ fluorescence emission, since the corresponding ligand 3,3 0 -pytz shows a similar emission at around 437 nm [59,60]. The emission spectrum of CP 4 (k ex = 355 nm) shown in Fig.…”

The influence of counter ion and ligandmethyl substitution on the solid-state structures and photophysical properties of mercury(ii) complexes with (E)-N-(pyridin-2-ylmethylidene)arylamines

“…In this context, the luminescent and electroluminescent properties of alkynylmercury complexes and mercury bipyridine complexes have been examined. [24][25][26][27][28] Weak intermolecular d 10 ···d 10 interactions such as Au···Au and Hg···Hg contacts can play an important role in materials science and crystal engineering, [29][30][31][32][33][34][35][36] as their strength is comparable with those exhibited by hydrogen bonds and they are often responsible for the observed optical properties. [37][38][39] The formation of metal···metal and aryl···aryl interactions in the solid-state can cause a red shift in the emission band compared with that in solution phase.…”

Synthesis, structure and luminescent properties of zinc(II) and Hg(II) complexes with substituted 1,10-phenanthroline

“…The N-Hg-N bite angle in 2b [70.9(1)] is larger than the one [70.0(1) ] in its 6-(2-methoxyphenyl)-2,2 0 -bipyridine mercury analogue. The angle between the aromatic ring and the phenanthroline plane is 49.8 for 2b, close to that in 6-(2-methoxyphenyl)-2,2 0 -bipyridine mercury (50.7 ) [12]. In addition, there are -stacking interactions between the phenanthroline planes of neighboring molecules for 2b in the solid state.…”

“…The X-ray analysis reveals that 2b adopts a distorted tetrahedral geometry with the metal center chelated by two nitrogens of the 1,10-phenanthroline moiety, while the oxygen does not coordinate, probably due to the weak donating ability of the -OMe group. In 2b, the two Hg-N bond lengths are slightly different [2.362(4) Å for Hg-N(1) and 2.382(4) Å for Hg-N(2)] and the average bond distance is slightly longer than that of 6-(2-methoxyphenyl)-2,2 0 -bipyridine mercury analogue (2.359 Å ) [12]. The values of the Hg-N bond length are consistent with those found in other four-coordinate Hg(II) complexes with similar ligands [16].…”

“…However, low yields and high costs of these complexes are disadvantages for their application as optoelectronic materials. Luminescent group 12 d 10 metal complexes with nitrogen-containing ligands are of interest because of their low cost [9][10][11][12]. To develop new complexes of this type with improved luminescent performance, we have synthesized a new modified 1,10-phenanthroline ligand and its zinc(II) and mercury(II) complexes.…”