Preparation and Crystal Structure of a Mixed Metal Assembly [Ni(phen)<sub>3</sub>][Cu(H<sub>-1</sub>pap)]<sub>2</sub>(NO<sub>3</sub>) · 8 H<sub>2</sub>O Featuring Octahedral Cationic and Square-planar Anionic Modules
Аннотация
Abstract The new mixed metal assembly [Ni(phen) 3 ][Cu(H -1 pap)] 2 (NO 3 ) · 8 H 2 O (2) (H 2 pap = CH 3 - C(=NO H)-C(O )-NH-(CH 2 ) 3 -NH-C(O )-C(=NOH)-CH 3 ) was obtained by co-crystallisation of [Li(H 2 O)4][Cu(H -1 pap)] · 2 H 2 O (1) and tris(1,10-phenanthroline)nickel(II) nitrate and studied by means of X-ray crystallography (triclinic, space group P1, a = 13.471(3), b = 13.641(3), c = 15.401(3) Å, α = 108.21(3), β = 97.73(3), γ = 107.74(3)°, V = 2476.6(9) Å , Z = 2 ,R1 = 0.0677 for 4672 unique reflections with I > 2σ(I)). The assembly indicates a network structure and consists of isolated cationic and anionic modules (octahedral [Ni(phen) 3 ] 2+ and square-planar [Cu(H -1 pap)] - ), non-coordinated nitrate anions and solvating water molecules. The elements of the crystal structure are linked by interactions of different types: by an extended system of H bonds, stacking interactions between aromatic rings, long apical Cu-N contacts and specific π-π interaction between a deprotonated oxime group of the complex anion and a phenanthroline ligand