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Updated: May 27, 2026

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Published on: January 15, 2018
[Mn(bpb)(DMAP)(NO)], an {Mn-NO} nitrosyl with Z' = 8
This study details the complex manganese(II) structure with eight molecules in its asymmetric unit, revealing distortions and varied hydrogen bonding. The crystal structure analysis provides insights into coordination chemistry and molecular arrangement.
Area of Science:
- Inorganic Chemistry
- Crystallography
- Coordination Chemistry
Background:
- Manganese(II) complexes with polydentate ligands are of interest for their diverse coordination environments.
- Structures with high Z' values (number of independent molecules in the asymmetric unit) present unique crystallographic challenges and opportunities for understanding molecular variations.
Purpose of the Study:
- To elucidate the crystal structure of a novel manganese(II) complex with a Z' = 8 configuration.
- To analyze the coordination geometry, ligand arrangements, and intermolecular interactions within this complex structure.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the three-dimensional structure.
- Crystallographic refinement was performed using rigid solvate groups and specific displacement parameters due to the presence of a superlattice.
Main Results:
- The structure features eight unique manganese(II) complex molecules [Mn(bpb)(DMAP)(NO)] per asymmetric unit, exhibiting distorted octahedral coordination.
- Significant variations were observed in the rotational orientation of the dimethyl-amino-pyridine (DMAP) ligand and in hydrogen bonding interactions.
- The average Mn-N(NO) bond length was determined to be 1.631(13) Å.
Conclusions:
- The study presents an unusual example of a Z' = 8 structure in manganese(II) coordination chemistry.
- The observed variations highlight the subtle differences in molecular packing and intermolecular forces within the crystal lattice.
- The crystallographic data provides a detailed understanding of the structural complexity and bonding in this manganese(II) complex.
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