名称:
Reaction of (±)-1,1′-binaphthyl-2,2′-diyl hydrogen phosphate {(±)-phosH} with copper(II), cobalt(II) and iron(II) compounds; Identification by x-ray diffraction of [Co(CH3OH)4(H2O)2][(+)-phos][(−)-phos]. 2CH3OH·H2O
摘要:
[Cu2(mu-O2CCH3)4(H2O)2], [CuCO3.Cu(OH)2], [CoSO4.7H2O], [Co((+)-tartrate)], and [FeSO4.7H2O] react with excess racemic (+/-)-1,1'-binaphthyl-2,2'-diyl hydrogen phosphate {(+/-)-PhosH} to give mononuclear Cu(II), Co(II) and Fe(II) products. The cobalt product, [Co(CH3OH)4(H2O)2]((+)-Phos)((-)-Phos).2CH3OH.H2O (7), has been identified by X-ray diffraction. The high-spin, octahedral Co(II) atom is ligated by four equatorial methanol molecules and two axial water molecules. A (+)- and a (-)-Phos- ion are associated with each molecule of the complex but are not coordinated to the metal centre. For the other Co(II), Cu(II) and Fe(II) samples of similar formulation to (7) it is also thought that the Phos- ions are not bonded directly to the metal. When some of the Cu(II) and Co(II) samples are heated under high vacuum there is evidence that the Phos- ions are coordinated directly to the metals in the products.