Variable transformations of di[4-(pyridin-2-yl)pyrimidinyl]disulfide induced by different metal salts

• Published in: Polyhedron Vol. 31; no. 1; pp. 801 - 806
• Main Authors: Zhu, Hai-Bin, Lu, Xin, Yang, Wen-Na, Gou, Shao-Hua
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 04.01.2012
• Subjects: Crystal structure; Heterocyclic disulfide; In situ reactions; S–S bond; In situ reactions; S–S bond; Heterocyclic disulfide; Crystal structure
• ISSN: 0277-5387
• DOI: 10.1016/j.poly.2011.11.025

When interacting with different metal salts, various in situ S–S bond reactions occur on 2-ppds ligand, concurrently resulting in distinct coordination compounds. [Display omitted] ► Variable transformations of 2-ppds ligand induced by metal-coordination. ► Insertion or extrusion of one S atom from 2-ppds ligand. ► Different coordination complexes resulted from in situ 2-ppds changes. Assembly of three different metal salts with 2-ppds ( 2-ppds = di[4-(pyridin-2-yl)pyrimidinyl]disulfide) under the same conditions produced three totally distinct coordination compounds. In the presence of Cu(NO 3) 2, a dinuclear Cu(I) macrocyclic compound [Cu 2( 2-ppts) 2](NO 3) 2 ( 1) together with a mononuclear Cu(II) compound [Cu( 2-pps)](NO 3) 2 ( 2) are formed, of which the initial 2-ppds ligand is in situ converted into its trisulfide 2-ppts ( 2-ppts = di[4-(pyridin-2-yl)pyrimidinyl]trisulfide) and monosulfide 2-pps ( 2-pps = di[4-(pyridin-2-yl)pyrimidinyl]sulfide), respectively. Replacement of Cu(NO 3) 2 by Zn(NO 3) 2 affords a mononuclear Zn(II) coordination compound [Zn( 2-pps)(NO 3) 2] ( 3). The use of HgCl 2 results in a dinuclear Hg(II) compound [Hg 4Cl 8( 2-ppds) 2] ( 4) without any change on 2-ppds. All coordination compounds have been structurally ascertained by X-ray crystallography. Besides, ESI-MS examination of the mother solution for each compound has also been carried out to further understand the impacts of different metal salts.