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Synthesis of Macrocyclic Mercury(II) Derivatives of S,S′ 1‐Trimethylene‐and S,S′ 1‐Tetramethylenebis( cis 1‐stilbene‐α,β1‐dithiol) with Unusual Structures
Author(s) -
Schrauzer Gerhard N.,
Zhang Cheng,
Reddy Hussain K.,
Schlemper Elmer O.
Publication year - 1993
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19931260611
Subject(s) - chemistry , denticity , ligand (biochemistry) , stereochemistry , molecule , octahedron , crystallography , medicinal chemistry , dithiol , crystal structure , organic chemistry , biochemistry , receptor
The reaction of the ligand cis ‐ – SC(Ph)C(Ph)–S–[CH 2 ] n – S – C(Ph)=C(Ph)–S – with n 3 (dianion of 1 ) with HgCl 2 in ethanol produces a yellow linearly trinuclear, μ1‐S and μ1‐Cl‐bridged complex of composition C 62 H 52 Cl 2 Hg 3 S 8 ( 4 ), in which the central Hg(II) ion is in a near octahedral arrangement of four HgS and two HgCl bonds, whereas the two terminal Hg(II) ions are tetracoordinated with three HgS bonds and one HgCl bond in distorted tetrahedral arrangements. The two ligands are bidentate with respect to the terminal and central Hg(II) ions. The corresponding ligand with n 4 (dianion of 2 ) reacts with HgCl 2 to yield a yellow Hg(II) complex of composition C 32 H 28 HgS 4 ( 5 ), in which the ligand is tetradentate and in the trans‐syn configuration. The Hg(II) ion in the unit cell of 5 is pentacoordinated, due to symmetric dimerization of two molecules of 2 by two weak coordinate HgS bonds of 3.442(2) Å length.