Alkali-metal complexes. Part VII. Crystal and molecular structures of the o-nitrophenolatobis(1,10-phenanthroline) complexes of sodium and rubidium

Abstract

The structures of the title complexes have been determined by X-ray analysis from diffractometer data. The sodium complex has triclinic crystals, a= 10·436(6), b= 10·062(6), c= 14·867(7)Å, α= 96·98(2), β= 104·02(1), γ= 119·12(4)°, and its structure was determined by direct methods. The rubidium complex, isostructural with the corresponding potassium and caesium complexes, is also triclinic, a= 11·413(6), b= 13·214(6), c= 10·068(15)Å, α= 99·06(5)β= 114·80(5), γ= 101·78(3)°; this structure was determined from Patterson and electron-density maps. The structures were refined by least-squares methods to R 0·074 (Na complex, 1371 observed reflections) and 0·051 (Rb complex, 2107 observed reflections).