Metal ion complexes of .alpha.-amido acids. 2. Structure and magnetic properties of iron(II) hippurate, a linear-chain insulator

Bis(N-benzoylglycinato)diimidazolecobalt(II)

“…The Co-N bond length (Table 1) is slightly shorter than the mean value of those observed in the complexes with divalent cobalt and imidazole (2.022 Å ; Orpen et al, 1989). The Co-O bond distance is shorter than that in [Co(hipp) 2 (H 2 O) 3 ]Á3H 2 O (2.00 Å ; Morelock et al, 1982).…”

Ternary complexes metal [Co(II), Ni(II), Cu(II) and Zn(II)] – ortho-iodohippurate (I-hip) – acyclovir. X-ray characterization of isostructural [(Co, Ni or Zn)(I-hip)2(ACV)(H2O)3] with stacking as a recognition factor

“…We have only been able to study one binary complex [Zn(I-hip) 2 (H 2 O) 2 ] 2 AE 3H 2 O (8) which shows a noncoplanarity between the peptide bond and the aryl ring [dihedral angle C(11)-C(6)-C(5)-O(5), 97.3°] contrarily to the coplanar disposition present in normal hippurate derivatives [6][7][8][9][10][11][12][13][14][15][16][17]. This different behavior must be related to the steric effect of ortho-iodine moiety.…”

“…Although several binary [6][7][8][9][10][11][12][13] and ternary [12,[14][15][16][17] complexes with hippuric acid and other related derivatives have been described in the literature, we have not found any structural information about transition metal complexes of I-hipH. For this reason we have studied the binary derivatives of o-iodohippuric acid with different divalent 3d transition metal ions: Zn(II), Cu(II), Co(II) and Ni(II) and their possible interaction with acyclovir (ACV) (Scheme 1) in order to know the general characteristics of this type of complexes.…”

Crystal structures of two isostructural bivalent metal N-benzoylglycinates

“…The C9-H9BÁ Á ÁO3 iv interaction (shown as black dotted lines) links the H9B atom in one chain with the O3 atom of a neighbouring chain. (Morelock et al, 1982) is also isostructural with the title compounds and is a 1D polymer. It is interesting to note that in the three isostructural N-benzoylglycinates of 3d metals, an aqua ligand functions as a bridging ligand to extend the structure, and not the N-benzoylglycinate.…”