X-ray crystal, magnetic and spectroscopic studies of dicopper mixed-ligand complexes containing bridged bis(β-diketonate) and tetramethylethylenediamine ligands

A New Bridging Chelating Ligand for Crystal Engineering: Synthesis, Polymorphism, and Two Modes of Assembly of 1,4-Bis(3-phenyl-1,3-propanedion)benzene with Metal Cations Resulting in Either Discrete or Polymeric Complexes

“…β-Diketonates are among the most studied ligands in the chemistry of metal complexes. − Despite this, only relatively simple β-diketonates have been exploited as building units in supramolecular design. − Tetraacetylethane is the simplest tetraketone with two separated β-diketonate functions, but only a few studies on the coordination species it forms have been reported. − Other studies on metal complexes with tri- and tetraketones are quite limited. − The present work introduces a new ligand with two separated β-diketone functions (Figure ). This ligand was expected to be capable of producing both polymeric and discrete complexes (Figure ).…”

“…[31][32][33][34][35][36][37][38][39][40][41] Tetraacetylethane 42 is the simplest tetraketone with two separated -diketonate functions, but only a few studies on the coordination species it forms have been reported. [43][44][45][46][47] Other studies on metal complexes with tri-and tetraketones are quite limited. [48][49][50][51] The present work introduces a new ligand with two separated -diketone functions ( Figure 1).…”

(μ-3,4-Diacetylhexa-2,4-diene-2,5-diolato-κ4O2,O3:O4,O5)bis[aqua(1,10-phenanthroline-κ2N,N′)copper(II)] bis(tetrafluoridoborate) monohydrate

“…For related Cu(II)-tae 2À -diimine complexes, see: Shen et al (1999a,b); Lim et al (1994); Fukuda et al (1994); Zhang et al (1999). For other similar metal complexes, see: Zhang et al (1998Zhang et al ( , 1999; Mei et al (2006a,b).…”

Cu[(PPh3)2O](acac): Cu+ charge-compensated by a coordinating acac− anion

“…Among these complexes, copper(I) complexes are relatively rare [3] and copper(I) complexes containing mixed phosphine and acac ligands have not been documented thus far. To our best knowledge, among the known copper(I) complexes containing acac ligand, the charge of the Cu + center is usually compensated by an isolated anionic moiety, such as ClO À 4 , F 6 P À , NO À 3 and Br À , which does not coordinate to the Cu + center [4] and the examples of the Cu + center charge-compensated by a coordinating anionic moiety are very rare [5]. Herein we describe the synthesis, structure and photoluminescence of a complex Cu[(PPh 3 ) 2 O](acac), which is the first example of copper(I) complexes containing mixed phosphine and acac ligands.…”

“…Moreover, in these complexes the charge of the Cu + center in one isolated moiety is usually compensated by another isolated anionic moiety, such as ClO À 4 , F 6 P À , NO À 3 and Br À , which does not coordinate to the Cu + center [4] and, to our best knowledge, only one complex in which the Cu + center is charge-compensated by a coordinating anionic moiety has been documented [5]. In the title complex, however, the charge of the Cu + center is compensated by a coordinating anionic moiety -acac À .…”