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Bis[1,1-dimethylbiguanide(1-)-kappa2N2,N5]copper(II) monohydrate
Li-Ping Lu1, Pin Yang, Shi-Dong Qin
1Institute of Molecular Science, Chemical Biology and Molecular Engineering Laboratory of Education Ministry, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China.
Summary
The crystal structure of a copper N,N-dimethylbiguanide complex was determined. This complex features two distinct copper units with square-planar coordination, stabilized by extensive hydrogen bonding interactions.
Area of Science:
- Inorganic Chemistry
- Crystallography
- Coordination Chemistry
Background:
- Biguanide ligands are known to form stable complexes with transition metals.
- Copper complexes with biguanide ligands have shown potential in various applications.
- Understanding the precise structural features is crucial for predicting chemical behavior.
Purpose of the Study:
- To elucidate the detailed crystal structure of a novel copper N,N-dimethylbiguanide complex.
- To analyze the coordination environment around the copper atoms.
- To investigate the intermolecular interactions, including hydrogen bonding, within the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the crystal structure.
- The crystal structure was solved and refined using standard crystallographic software.
- Analysis of bond lengths, bond angles, and hydrogen bonding networks was performed.
Main Results:
- The crystal structure of [Cu(C(4)H(10)N(5))(2)].H(2)O was successfully determined.
- Two independent copper N,N-dimethylbiguanide complex units were identified, exhibiting square-planar coordination.
- The copper atoms displayed different symmetries within the crystal structure, one on an inversion center and the other on a twofold rotation axis.
- Detailed Cu-N bond lengths were measured for both complexes.
- The crystal structure is stabilized by a network of N-H...O, O-H...N, and N-H...N hydrogen bonds, with each water molecule participating in four hydrogen bonds.
Conclusions:
- The study provides a precise structural characterization of the copper N,N-dimethylbiguanide complex.
- The observed coordination geometry and hydrogen bonding patterns offer insights into the stability and packing of the complex.
- This structural information can serve as a basis for further investigations into the properties and potential applications of this class of compounds.