A complete series of stepwise oxidation of [Co(2-pyridinethiolato)(en)2]2+. Characterization of the 2-pyridinesulfenato-N,S and -N,O, 2-pyridinesulfinato-N,S and -N,O, and 2-pyridinesulfonato-N,O complexes

Pyridine‐2‐sulfonates as Versatile Ligands for the Synthesis of Novel Coordinative and Hydrogen‐Bonded Supramolecules

“…It may be mentioned here that only the limited coordination chemistry of pyridine-2-sulfonates is known. [15,16] The aerobic oxidation of sulfur in 2,2Ј-bis(3-methylpyridine) disulfide in the presence of copper() bromide in methanol generated 3-methylpyridine-2-sulfonic acid, which subsequently formed an infinite one-dimensional polymer, [Cu(3-mpSO 3 ) 2 ] n . A direct reaction of 3-methylpyridine-2-sulfonic acid (3-mpSO 3 H) with Zn II bromide also formed a two-dimensional hydrogen-bonded polymer, .…”

Oxidation of Zn(N2S2) complexes to disulfonates: relevance to zinc-finger oxidation under oxidative stress

“…Two pyridine molecules complete the octahedral coordination set. Among the few metal sulfonate complexes reported in the literature [16][17][18][19][20][21][22], all are six-coordinate, with two additional water molecules for tetradentate ligands. Zinc coordination is limited to pyridine-2-sulfonates [20,21] or tris-(3-tert-butylpyrazolyl)-methanesulfonate [22] which contain strong pyridine or pyrazolyl nitrogen donors and form stable five-or six-membered N,O chelate ring, respectively.…”

“…Only one cationic monomer is represented. Selected bond distances (Å ): Zn1-N1, 2.035(5); Zn1-N2, 2.050(5); Zn1-S2, 2.292(2); Zn1-S1, 2.3210(19); O1-C7, 1.268(8); O2-C12, 1.255(8); N1-C7, 1.334(8); N2-C12, 1.324(9). Selected bond angles (°): N1-Zn1-N2, 81.8(2); N1-Zn1-S2, 129.02(17); N2-Zn1-S2, 103.47(19); N1-Zn1-S1, 97.75(17); N2-Zn1-S1, 126.35(18); S1-Zn1-S2, 116.40(8); C7-C8-…”

Isostructural zinc (II) and cadmium (II) coordination complexes with 4-pyridin-4-yl-pyrimidine-2-sulfonate: Structure and fluorescent properties

“…Non-hydrogen atoms were placed in geometrically calculated positions. The crystallographic data for complexes (1) and (2) are summarized in Table 1.…”

“…For example, 2-pyridine-sulfonate exhibits chelation mode via one sulfonato O atom and one heterocyclic N atom when coordinated to transition metal ions [1][2][3]. By contrast, 3-pyridine-sulfonate serves not only as a terminal coordination ligand but also as a charge-balanced counter ion [4].…”