Tetra-μ₃-methanolato-tetrakis[(2-formyl-6-methoxyphenolato)methanolnickel(II)]

Abstract

The molecule of the title compound, [Ni4(CH3O)4(C8H7O3)4(CH3OH)4], has S 4 symmetry. Each of the four NiII atoms occupies every other corner of a cube, with the alternate corners occupied by μ3-methano­late bridging groups linking to three NiII atoms. Each NiII atom is in an O6 octa­hedral coordination environment formed by three O atoms from three μ3-methano­late groups, one from methanol, and two others from a bidentate 2-formyl-6-meth­oxy­phenolate ligand. The Ni—O bond distances range from 2.0020 (14) to 2.0938 (14) Å, the cis bond angles range from 81.74 (6) to 97.63°, and the trans bond angles range from 168.76 (5) to 175.22 (6)°. There are bifurcated hydrogen-bonding inter­actions between the coordinated methanol OH groups and both the phenolic and meth­oxy O atoms of an adjoining 2-formyl-6-meth­oxy­phenolate moiety. In addition, there are weak inter­molecular C—H⋯O inter­actions involving the meth­oxy O atoms.

A New Chiral Ni4O4 Distorted Cube: Synthesis, Structure, and Magneto‐Structural Correlation

“…In the asymmetric unit (Figure ), there are four Ni metal centers which are all in distorted octahedral geometry with cis ‐angles between 75.93 and 111.73°. The Ni–O and Ni–N bond lengths are in the range of 1.987(5)–2.181(3), and 2.001(5)–2.013(5) Å, respectively, which are in well agreement with the previously published works . The molecule is constructed by two tetradentate Schiff‐base anions (Figure a, donor = O, N, O, O), two hydroxyacetophenone and two acetate anions.…”

“…The Ni-O and Ni-N bond lengths are in the range of 1.987(5)-2.181(3), and 2.001(5)-2.013(5) Å, respectively, which are in well agreement with the previously published works. [7][8][9][10] The molecule is constructed by two tetradentate Schiff-base anions (Figure 2a The other alkoxide atoms are simply bonded with the metal center. The tetradentate Schiff-base anion is formed by the dehydration of 2′-Hydroxyacetophenone and (R)-3-amino-1,2propanediol as in the Scheme 1, resulting in a crown-shape ligand.…”

“…[7a] Liu and co-workers isolated optically pure multiferroic materials based on pure chiral ligands. [ [8] Escuer et al reported the crystal structures and magnetic properties of two compounds with pyridine-2-methoxide ligands. [9] Lin et al reported three complexes with azido, acetato and ligands derived from 2,6-diformyl-4-methylphenol (by the in-situ condensation of DFMP with ethanolamine, D/L-1-amino-2-propanol and (±)-2-amino-1butanol), and their magnetic behaviors are found to be slightly different.…”

Acetato(aqua){6,6′-dimethoxy-2,2′-[ethane-1,2-diylbis(nitrilomethanylylidene)]diphenolato}cobalt(III) methanol disolvate

“…2(CH 3 OH), has been determined. Schiff base ligands containing a methoxy or ethoxy substituent in the 3 position in the aromatic ring and in a cis conformation about the central metal are often involved in interactions where these substituent are either coordinated to a metal (Assey et al, 2010a,b;Ayikoe, et al, 2010) or form strong hydrogen bonds to a water molecule (or some other suitable solvent such as dimethylformamide) in the cavity created by this conformation (Bao et al, 2009;Ayikoé et al, 2011). In this case, as is found in related Mn and Co complexes (Assey et al, 2010b;Huie, et al, 1979), this is achieved by two metal complexes coming together to form a hydrogen bonded dimer.…”

“…For related dimeric structures formed through hydrogen bonding, see: Huie et al (1979); Assey et al (2010b). For structurally related complexes with included hydrogen-bonded solvent molecules, see: Assey et al (2010a,b); Ayikoe et al (2010); Bao et al (2009); Ayikoé et al (2011). For the use of cobalt(III)-salen complexes as catalysts, see: Morandi et al (2011); Haak et al (2010) and for the potential applications of cobalt-Schiff base complexes for magnetic and/or conducting devices, see: Nabei et al (2009); Lin et al (2011).…”