Saccharin complexes of zinc(II) with phenanthroline and 2,9-dimethyl-1,10-phenanthroline: synthesis and characterization

Abstract

The saccharinato complexes [Zn(phen) 2 (sac)(H 2 O)]sac (1) and [Zn(sac)(dmp)(H 2 O)](sac) (2), where phen ¼ 1,10-phenanthroline, dmp ¼ 2,9-dimethyl-1,10-phenanthroline, and sac ¼ saccharinato ion/ligand, were synthesized by the reaction of [Zn(sac) 2 (H 2 O) 4 ] Á 2H 2 O with ligands and have been characterized by elemental analysis, IR, and 1 H NMR spectroscopies. Conductivity of complexes was measured in DMSO. Compound 1 is characterized by single crystal X-ray diffraction and compared with some isomorphous zinc-saccharinate complexes reported previously. Complex 1 crystallizes in the triclinic system, space group P" 1, with Z ¼ 2, and consists of alternating slightly distorted octahedral [Zn(phen) 2 (sac)(H 2 O)] þ and noncoordinated saccharinate. The zinc bound aqua is hydrogen bonded to an oxygen of carbonyl in the saccharinate ligand and the SO 2 group in the saccharinate counter-ion from an adjacent molecule. Intermolecular and intramolecular hydrogen bonds and C-H Á Á Á O and C-H Á Á Á N short contacts lead to a 3-D network.

Hydrothermal synthesis and characterization of Zn(II), Cd(II) and Ag(I)-saccharinate complexes containing bis(imidazol) derivatives

“…The Zn1 atom is four-coordinated by two nitrogen atoms (N3 and N6 i ) from two different obix ligands [Zn1-N3 = 1.990(4) Å and Zn1-N6 i = 1.987(4) Å] and two nitrogen atoms (N1 and N2) from two different sac ligands [Zn1-N1 = 1.985(4) Å and Zn1-N2 = 2.000(4) Å], which provide the charge balance for the complex. These Zn-N bond distances are comparable to the corresponding bonds lengths in the literature [24][25][26][27][28]. Four-coordinate complexes may exhibit either tetrahedral or square planar geometries.…”

Bis{3-(2-amino-benzilimino)-pentan-2-on oksimato}kobalt(III) sakkarinat monohidrat kompleksinin sentezi, karakterizasyonu ve teermal özellikleri

“…Sakkarinin biyolojik önemi nedeniyle sakkarinat içeren metal komplekslerine ilgi çok fazladır. Sakkarinat iyonu koordinasyon bileşiklerinde tamamlayıcı iyon [30][31][32][33][34][35] veya koordine ligand [28,29,[31][32][33]36] olabildiği gibi bazı bileşiklerde hem ligand hem de tamamlayıcı iyon olarak bulunabilmektedir [34,[37][38][39]. Son yıllarda özellikle N-verici ligandlar ve sakkarinat içeren metal komplekslerinin çalışmalarına rastlanmaktadır [30][31][32][33][34][35][36][37][38][39].…”