Crystal structure of tetrakis(o-phenylenediamine)nickel(II) chloride-bis(o-phenylenediamine) adduct, [Ni(OPDA)4]Cl2.20PDA, a crystal containing bidentate, monodentate and toothless OPDA

Abstract

Crystal Structure of Tetrakis(o-phenylenediamine)nickel(II) Chloride-Bis(o-phenylenediamine) Adduct,

Solution structure and dynamics of five-coordinate d6 complexes

“…Comparable situations exist for LiF5Ph3P038 and Ni(C6H8N2)6Cl2. 39 In support of this idea, we note that Dq values for octahedral Ru(II) are A set of observed and calculated 31P NMR spectra for RuC12L3 is shown in Figure 2. The major pattern observed at low temperatures is characteristic of the solid state structure of RuC12L3 (inequivalent phosphines).…”

Nuclear magnetic resonance studies of planar low-spin complexes of cobalt(II) with Schiff bases. N,N'-ethylenebis(salycylideneiminato)cobalt(II) in noncoordinating solvents

“…The complex crystallizes in space group P2\jc of the monoclinic system, with four molecules in a unit cell of dimensions a = 11.635 (2) Á, b = 19.213 (4) Á, c = 18.107 (3) Á, ß = 114. 39 (2)°. The structural parameters were refined by least-squares techniques, the R factor on F converging to 5.4% for the 3841 independent reflections (measured using a four-circle diffractometer) for which F1 > a(F2) and 2 < 50°.…”

Exchange Coupling Mediated by N–H···Cl Hydrogen Bonds: Experimental and Theoretical Study of the Frustrated Magnetic System in Bis(o-phenylenediamine)nickel(II) Chloride

“…In studies with metal ions, o -phenylenediamine has been shown to act in a variety of ways: as a bidentate ligand, as a monodentate ligand, and even as a bridging ligand . On the other side, although Ni(II) complexes with o -cyclohexanediamine are quite numerous (up 27 examples can be found in the CCDC database updated Nov 2011), the number of Ni(II) complexes with the corresponding aromatic o -phenylenediamine ligand is much lower (only seven complexes can be found in the CCDC database, including the title compound). , A preliminary report of the crystal structure of NiCl 2 ( o -phenylenediamine) 2 (henceforth NiCl 2 (opda) 2 ) showed the structure contains discrete trans octahedral NiCl 2 (opda) 2 species in which the o -phenylenediamine molecules serve as bidentate ligands . In this paper, we reexamine the crystal structure of NiCl 2 (opda) 2 , focusing on the N–H···Cl hydrogen bond network, whose presence in this compound leads to an interesting example of molecular self-assembly through weak interactions, an important topic in supramolecular chemistry .…”