Crystal structure of polynuclear pivalate Ni(II) complexes with butanediol

Abstract

Using single crystal X-ray diffraction the structure of polynuclear [Ni 6 (OH) 4 (Piv) 7 (HOC 4 H 8 O)(HPiv) 4 ],Piv) 4 }, and {K[Ni 2 L 2 (Piv) 3 ]} ∞ complexes, where HOC 4 H 8 OH is 1,4-butanediol, HPiv is pivalic acid, and L is the anion of nitroxyl radical 2,2,5,5-tetramethyl-4-(3′,3′,3′-trifluoro-2′-oxy-1′-propenyl)-3-imidazolin-1oxyl is determined.

Mixed‐Valence Manganese Carboxylate Clusters, {MnIII6MnII4}, {MnIII7MnII5Na}, and {MnIII7MnII5}, Derived from the Combined Use of Di‐2‐pyridyl Ketone with Selected Aliphatic Diols

“…Following the isolation of 2 , synthetic efforts were focused on investigating reactions involving other aliphatic diols in place of pdH 2 , and 1,4‐bdH 2 was chosen for this purpose. One reason for this choice is that the coordination chemistry of 1,4‐bdH 2 is relatively unexplored, with the only known example of a 3d metal cluster with this ligand in the literature being a [Ni 24 ] complex [46] . In addition, upon deprotonation pdH 2 and 1,4‐bdH 2 are expected to have different coordination capabilities despite the fact that both can serve as chelating/bridging ligands, due to the fact that the two oxygen donor atoms of 1,4‐bdH 2 are separated by an additional carbon atom compared with pdH 2 .…”

“…One reason for this choice is that the coordination chemistry of 1,4-bdH 2 is relatively unexplored, with the only known example of a 3d metal cluster with this ligand in the literature being a [Ni 24 ] complex. [46] In addition, upon deprotonation pdH 2 and 1,4-bdH 2 are expected to have different coordination capabilities despite the fact that both can serve as chelating/bridging ligands, due to the fact that the two oxygen donor atoms of 1,4-bdH 2 are separated by an additional carbon atom compared with pdH 2 . As a result, 1,4-bdH 2 can form six-membered chelate rings vs the five-membered ones formed by pdH 2 .…”