Synthesis and Crystal Structure of a Series of Transition Metal Complexes with Sulfur‐Containing Ligands

Abstract

A series of transition metal complexes [Mn(HL)₂](ClO₄)₂ · 0.25H₂O (1), [Fe(L)₂](ClO₄) · H₂O (2), [Fe(L)₂](BF₄) · C₇H₈N₄ (3), [Co(HL)(L)](ClO₄) · H₂O (4), [Co(HL)(L)](ClO₄) · 1.5C₂H₅OH (5), and [Ni(L)₂] · H₂O (6), where HL=2‐acetylpyridine thiosemicarbazone, C₇H₈N₄=bis(pyrazolyl)methane, have been synthesized and their structures were determined. All the metal centers are six‐coordinate with 4 nitrogen atoms and 2 sulfur atoms from 2 ligands. Complexes 1–3 and 5 are mononuclear complexes while complexes 4 and 6 contain hydrogen bonds that separately connect the molecule units into multi‐dimensional structure and aggregation. These complexes are potential molecular bricks of the multi‐dimensional or heterometallic complexes containing sulfur atoms.

Keywords:

• crystal structure
• thiosemicarbazone
• molecular bricks
• transition metal

Acknowledgments

This work was supported by the National Natural Science Foundation of China (Nos. 20425103 and 90501002) and the State Key Project of Fundamental Research of MOST (2005CCA01200), P. R. China.