(4,4′‐Bipyridine)mercury(II) Coordination Polymers,Syntheses, and Structures |
| |
Authors: | Ali Morsali Long‐Guan Zhu |
| |
Abstract: | Mercury(II) complexes with 4,4′‐bipyridine (4,4′‐bipy) ligand were synthesized and characterized by elemental analysis, and IR, 1H‐ and 13C‐NMR spectroscopy. The structures of the complexes Hg3(4,4′‐bipy)2(CH3COO)2(SCN)4]n ( 1 ), Hg5(4,4′‐bipy)5(SCN)10]n ( 2 ), Hg2(4,4′‐bipy)2(CH3COO)2]n(ClO4)2n ( 3 ), and Hg(4,4′‐bipy)I2]n ( 4 ) were determined by X‐ray crystallography. The single‐crystal X‐ray data show that 2 and 4 are one‐dimensional zigzag polymers with four‐coordinate Hg‐atoms, whereas 1 is a one‐dimensional helical chain with two four‐coordinate and one six‐coordinate Hg‐atom. Complex 3 is a two‐dimensional polymer with a five‐coordinate Hg‐atom. These results show the capacity of the Hg‐ion to act as a soft acid that is capable to form compounds with coordination numbers four, five, and six and consequently to produce different forms of coordination polymers, containing one‐ and two‐dimensional networks. |
| |
Keywords: | Mercury complexes Coordination polymers 4 4′ ‐bipyridine X‐Ray crystallography |
|
|