Interactions between metal ions and carbohydrates: the coordination behavior of neutral erythritol to transition metal ions.
The single crystals of coordinated complexes of neutral erythritol (C4H10O4) with various transition metal ions were synthesized and studied using FT-IR and single crystal X-ray diffraction analysis. Two CuCl2-erythritol complexes (denoted as CuE(I) and CuE(II)) were obtained. In CuE(I), Cu2+ coordinates with two chloride ions and four OH groups from two erythritol molecules. Two copper centers are linked by one erythritol molecule to form a zigzag chain. For CuE(II), each Cu2+ coordinates with two OH groups from an erythritol molecule and two chloride ions. The crystal of CuE(II) contains complexed and free erythritol, the dimers of [Cu2Cl4(C4H10O4)] further form a [Cu2Cl4(C4H10O4)]infinity chain via secondary Cu...Cl bonds, both the dimer unit of [Cu2Cl4.(C4H10O4)] and non-coordinated C4H10O4 unit exist side by side in the crystal. MnCl2-erythritol complex whose structure is similar to CuE(I) is also acquired. The OH groups of erythritol act as ligand to coordinate to metal ions on one hand, one the other hand, OH groups form hydrogen bonds network that link chain and layer together to build three-dimensional structures.
The State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
Limin
L
Yang
Wen
W
Tian
Yizhuang
Y
Xu
Yunlan
Y
Su
Song
S
Gao
Zheming
Z
Wang
Shifu
S
Weng
Chunhua
C
Yan
Jinguang
J
Wu
D002241:Carbohydrates / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004896:Erythritol / Q000737:chemistry*; D006860:Hydrogen Bonding; D007477:Ions / Q000737:chemistry*; D008280:Magnetics; D008670:Metals / Q000737:chemistry*; D015394:Molecular Structure; D017550:Spectroscopy, Fourier Transform Infrared; D014665:Vasodilator Agents / Q000737:chemistry
D002241:Carbohydrates; D007477:Ions; D008670:Metals; D014665:Vasodilator Agents; D004896:Erythritol