COMPOUNDS OF 5-HYDROXYMETHYL-5-NITRO(AND 5-AMINO)HEXAHYDROPYRIMIDINE-1,3-BISETHANOL WITH NICKEL(II) - THE STRUCTURE OF YRIMIDINE-1,3-BISETHANOL-N(1),N(5),O(1))NICKEL(II) ACETATE PERCHLORATE

Reaction of a nickel(II) salt, 2-aminoethanol, formaldehyde and nitrom ethane yields a nickel(II) complex of ymethyl-5-nitrohexahydropyrimidi ne-1,3-bisethanol, hnpdH-2, isolated as sparingly soluble blue salts o f the cation [Ni(hnpdH)]+, and as insoluble green [Ni(hnpd)]. The nitr o group of the ligand was reduced by catalytic hydrogenation to form 5 -hydroxymethylhexahydropyrimidine-1,3-bisethanol, ahpdH, isolated as s alts of cations [Ni(ahpdH)2]2+ and [Ni(ahpdH)(ahpd)]+. The structure o f [Ni(ahpdH)2] (CH3COO) (ClO4), determined by X-ray diffractometry, sh owed a cis NiN4O2 octahedral arrangement, with two ahpdH ligands in me ridional coordination by the primary amino and one tertiary amino nitr ogens, and the linked hydroxyethyl oxygen atom of each ligand. hydropy rimidine-1,3-bisethanol-N1,N5,O1)nickel(II) acetate perchlorate, tricl inic, space group P1BAR, a 9.233(2), b 9.567(3), c 16.775(3) angstrom, alpha 81.87(2), beta 76.08(2), gamma 84.15(2)degrees, R(w) 0.0325, R( w) 0.0334 for 3859 reflections.]