Monomeric and polymeric nickel complexes of malate: X-ray crystal structure of polymeric homochiral S-malato nickel(II), [Δ-Ni(S-Hmal)(H2O)2]n·nH2O

Synthesis, Structure and Magnetic properties of Chiral and Nonchiral Transition‐Metal Malates

“…L ‐Malate trihydrate compounds 7, 38 8 39 and 9 : Compounds 7 (pink blue crystals , yield: 0.73 g, 64 %), 8 (green crystals, yield: 0.90 g, 79 %), 9 (dark pink crystals) were synthesised similarly from CoCl 2 ⋅6 H 2 O (98 % Acros; 1.108 g, 4.66 mmol), NiCl 2 ⋅6 H 2 O (99.99 % Sigma; 1.107 g, 4.66 mmol) and from CoCl 2 ⋅6 H 2 O (98 % Acros; 0.554 g, 2.33 mmol) and NiCl 2 ⋅6 H 2 O (99.99 % Sigma; 0.554 g, 2.33 mmol), respectively. Elemental analyses, IR and UV data for the series of compounds are given in the http://www.wiley-vch.de/contents/jc_2111/2006/f600001_s.pdf.…”

“…Single‐crystal structures were reported for the two isostructural Co II and Ni II L ‐malate trihydrates ( 7 and 8 , respectively), which consists of packed chains of interconnected metal–O 6 octahedra 38. 39 In addition, the Mn II L ‐malate trihydrate crystallises as an extensive polymeric network with a different structure compared to the precedent Ni II and Co II parent compounds 37. 40 To our knowledge, the magnetic behaviours of these three transition‐metal malate trihydrates have not been investigated.…”

Identification of nickel chelators in three hyperaccumulating plants: An X-ray spectroscopic study

“…Structural information can then be deduced from the analysis of such Fourier filtered k 3 khi(k) curves, on the basis of theoretical fitting. For that purpose, crystallographic models for Ni-malate and Ni-citrate complexes (Ni:L = 1 for both complexes) (Baker et al, 1983;Zhou et al, 2002) were used to build theoretical EXAFS oscillations at Ni K-edge. FEFF calculations, on the basis of FEFF6 module included in ARTEMIS software, revealed similar theoretical EXAFS signals for both complexes.…”

“…Theoretical spectra could be calculated following the crystallographical reduced data from Ni-citrate and Nimalate complexes (Baker et al, 1983;Zhou et al, 2002) and using ARTEMIS (includes ATOMS, FEFF6 packages). Individual scattering paths were selected for fitting on the basis of the number of implied scattering legs (simple scattering, n = 2; multiple scattering, n > 2), of their relevance and relative contribution in EXAFS signal (calculated by FEFF).…”

1‐D Open‐Channeled 3‐D Supramolecular Self‐Assembled Frameworks Encapsulating Unprecedented Cyclic (H2O)8 Clusters or Solvent Molecules

“…[32,33] In addition, the fact that the Cu-O carboxyl bonds [av.1.967(2) Å] are significantly shorter than the Cu-O hydroxyl bond [2.209(3) Å] indicates that the hydroxyl group of 1 is protonated; this is also found in many other α-hydroxycarboxylate complexes. [27,34] It is worthwhile to note that the Hhbd dianion adopts an R conformation and bridges the copper centers to form 1-D polymeric chains running along the crystallographic a …”