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Updated: Aug 20, 2025
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Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
Published on: December 16, 2013
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Coordination Patterns of the Diphosphate in IDP Coordination Complexes: Crystal Structure and Chirality
Yanhong Zhu1,2, Zhongkui Li1, Xue Zhong1
1Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China.
Inorganic Chemistry
|November 22, 2022
Summary
This study details seven novel metal nucleotide coordination polymers using X-ray diffraction. It reveals a correlation between diphosphate coordination patterns and pentose ring conformation, crucial for designing functional materials.
Area of Science:
- Coordination Chemistry
- Crystallography
- Materials Science
Background:
- Accurate geometrical parameters of metal nucleotides are vital for understanding structure-property relationships.
- This knowledge is essential for designing functional materials and comprehending biochemical processes like enzyme-metal-substrate interactions.
Purpose of the Study:
- To design, synthesize, and characterize seven novel coordination polymers of inosine 5'-diphosphate (IDP) with transition metals.
- To investigate the diverse coordination patterns of the diphosphate group and its spatial relationship with the pentose ring.
- To elucidate the correlation between sugar-diphosphate backbone torsion angles and pentose ring conformation in nucleotide metal complexes.
Main Methods:
- Single-crystal X-ray diffraction for structural characterization of seven metal-IDP coordination polymers.
- Crystallographic analysis to determine diphosphate coordination patterns (open, close, hybrid).
- Analysis of pseudorotation phase angle and puckering degree to study pentose ring conformation.
- Solid-state circular dichroism spectroscopy combined with crystal structure analysis to examine chirality.
Main Results:
- Seven coordination polymers with transition metals (Zn, Cd, Cu, Co) and IDP were successfully synthesized and characterized.
- Diverse diphosphate coordination patterns (open, close, hybrid) were identified.
- A direct correlation was established between sugar-diphosphate backbone torsion angles (ω', φ) and pentose ring conformation (Envelope or Twist forms).
- The chirality of the coordination polymers was investigated.
Conclusions:
- This study provides the first elucidation of diphosphate coordination patterns relative to pentose ring conformation in nucleotide metal complexes.
- The findings differ from those in inorganic or organic diphosphate compounds, highlighting unique nucleotide coordination chemistry.
- The results are significant for understanding nucleotide coordination chemistry, supramolecular chemistry, and biochemistry, aiding in the design of functional materials.
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