Showing papers by "Juan J. Fiol published in 1995"
TL;DR: The first creatinine ternary complex has been crystallized from aqueous solution as mentioned in this paper, and the complete crystal structure is maintained by an extensive hydrogen-bonding network in which the three types of water molecules are involved.
18 citations
TL;DR: In this paper, two creatinine complexes were obtained in the form of suitable crystals for X-ray crystallography, one in triclinic space group P 1 (#2) with a = 9.940(2) A, b = 15.732(6), A, c = 9,339(3) A, α = 96.30 (3)°, γ = 75.83(3)-°, V = 1369(2), Z = 1, R = 0.039.
16 citations
TL;DR: The IR, electronic, and 1H and 13CNMR spectral data of (1), (2), and (3) suggest binding of the memury to the heterocyclic nitrogen, in agreement with the crystal structure determination.
Abstract: The first X-ray structure of an isatin (2,3-indolinedione, isaH) metal complex, bis(isatinato)memury(II) (C16H8N2O4Hg) (1), was determined. (1) was obtained from the reaction of isaH with mercury(II) acetate in methanol. Analogously, treatment of sodium saccharinate and mercury(II) acetate in methanol yielded Hg(saccharinato)2•0.5CH3OH (3). (1) crystallizes in the monoclinic system, space group P21/ a with a = 7.299(1) A, b = 8.192(1) A, c = 11.601(1) A , β = 105.82(1)°, V = 667.4 A3, Z = 2, Dcalc = 2.452 g cm−3, MoKα radiation(λ = 0.71073 A), μ = 115.5 cm-1, F(000) = 460, 21(1) °C. The structure was refined on the basis of 2023 observed reflections to R= 0.044. The two deprotonated, non coplanar isa ligands are trans to each other in a head to tail orientation and bound to the Hg through the nitrogen in a linear N-Hg-N arrangement. The Hg atom is at the center of symmetry of the complex and displaced by 0.62 A from the two planes of the isa ligands (τ Hg-N1-C2-O2= -16°). The Hg-N bond length is 2.015 A. Noπ-aryl-memury(ll)-π-aryl stacking interaction was observed either in the solid state or in the solution state. The IR, electronic, and 1H and 13CNMR spectral data of (1) and (3) suggest binding of the memury to the heterocyclic nitrogen, in agreement with the crystal structure determination of (1).
7 citations