Spectroscopy and x-ray crystal structure of luminescent bis[bis(diphenylphosphino)methane]tetracyanodiplatinum

Synthesis, Structure, Optical Properties and Theoretical Studies of Pt(P−P)(CN)2 with P−P = 1,2‐Bis(diphenylphosphanyl)benzene and 2,2′‐Bis(diphenylphosphanyl)‐1,1′‐binaphthyl − Luminescence from Metal‐to‐Ligand Charge Transfer and Intraligand States

“…Complexes with the general composition Pt II (PϪP)(CN) 2 may be monomeric or dimeric [9,10] (Scheme 2). Scheme 2 In the dimers the cyanide ligands occupy trans positions and both square-planar Pt II complex moieties are connected by bridging phosphanes.…”

“…However, the dimers Pt 2 (PϪP) 2 (CN) 4 with PϪP ϭ bis(diphenylphosphanyl)methane, bis(dimethylphosphanyl)methane and bis(dicyclohexyl-phosphanyl)methane show an intense absorption (ε Ͼ 10 4 ) around 330 nm, which is associated with the PtϪPt interaction. [9,10] These absorptions do not appear in the spectra of Pt(dppb)(CN) 2 and Pt(binap)(CN) 2 . Accordingly, the latter complexes are either monomeric at least in solution, or dimeric but with large PtϪPt distances that prevent any efficient metalϪmetal interaction.…”

“…[9,10] Our target compounds Pt(PϪP)(CN) 2 were expected to be accessible by simple synthetic procedures.…”

The first principle study on the spectra of FPt monomer and its excimer

“…0.326 nm, the larger values compared with other Pt dimmers [16][17][18][19][20] It has been stated that Pt(II) complexex with squareplanar structure and axial character easily form oligomer through weak Pt···Pt interaction. For example, many Pt(II) diimine complexes and Pt(CN) 4 2 salts stack in the solid state with short metal-metal separations (< 0.32 nm) [31]. This can be explained by molecular orbital interaction, i.e., the open site on Pt atom allows fully occupied 5d z 2 atomic orbitals of adjacent platinum centers splitting to d bonding and d* antibonding molecular orbitals.…”

PdII–PdII bonding interaction in dinuclear PdII complex with non-macrocyclic (O&N) chelates: Characterization, kinetics and DFT study

“…Pd II -Pd II dimer with metal-metal interaction [30][31][32][33] have versatile uses in designing catalytic activity [34], insertion reaction [35,36] and C-C sigma bond formation [37][38][39][40][41] in synthetic organic chemistry. Such d 8 -d 8 dimers have been previously observed with Rh I , Ir I and Pt II centers, which exhibit photochemical properties and take part in a rich variety of reactions [30][31][32][33]. We herein report the synthesis and characterization of the polymeric complex [Pd(pic)Cl 2 ] 1 and [Pd(pic)(cbdca)] 2 ÁH 2 O 4 with metal-metal interaction (bond distance 3.1790(1) Å).…”