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A monomeric selenium(IV) diimide and a dimeric seleninylamine
Tiina Maaninen1, Risto Laitinen, Tristram Chivers
1Department of Chemistry, University of Oulu, P.O. Box 3000, FIN-90401, Oulu, Finland.
Chemical Communications (Cambridge, England)
|September 26, 2002
Summary
The study reveals distinct solid-state structures for selenium compounds: a monomeric Z,E-configured diimide and a cis-dimeric seleninylamine. These findings advance understanding of selenium-nitrogen chemistry.
Area of Science:
- Inorganic Chemistry
- Organoselenium Chemistry
- Solid-State Chemistry
Background:
- Selenium-nitrogen compounds exhibit diverse structural motifs.
- Understanding the factors governing the aggregation and configuration of these species is crucial for predicting their reactivity and properties.
Purpose of the Study:
- To elucidate the solid-state structures of two distinct selenium-nitrogen compounds.
- To investigate the structural differences between a selenium(IV) diimide and a seleninylamine.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular structures.
- Crystallographic data were analyzed to identify monomeric and dimeric forms and their configurations.
Main Results:
- The selenium(IV) diimide, AdN=Se=NAd (Ad = 1-adamantyl), was found to adopt a monomeric structure with a Z,E configuration in the solid state.
- The seleninylamine, OSe(mu-NBut)2SeO, was observed to crystallize as a cis-dimer.
Conclusions:
- The steric bulk of the adamantyl (Ad) and tert-butyl (But) groups influences the aggregation behavior of selenium-nitrogen compounds.
- The observed structural dichotomy highlights the versatility of selenium in forming different coordination environments and structural types.