Donoratomene

Donoratomene is a term used in theoretical chemistry to describe a hypothetical class of conjugated organo-heteroatomic molecules that incorporate a donor atom into a polyene-like backbone. The name combines the notion of a donor site with aene-like suffix to suggest an unsaturated, chain-like structure.

Structure and composition

In donoratomenes, the backbone is predominantly carbon-based with one or more donor atoms such as nitrogen, phosphorus, or sulfur integrated into the chain. The donor atom is positioned to participate in delocalized electronic structure, potentially stabilizing charges and influencing the molecule’s frontier orbitals. Variants may feature mono- or multi-ring motifs and can be planar or slightly puckered depending on the backbone and substituents.

Synthesis and stability

Donoratomene remains a theoretical construct without established experimental synthesis. Proposed routes in discussions include stepwise condensation of donor-substituted vinyl units or cyclization of donor-bridged precursors. Computational studies highlight challenges related to oxidative sensitivity, polymerization propensity, and the need for stabilizing substituents to preserve a conjugated, delocalized framework.

Properties and potential applications

Theoretically, donoratomenes are predicted to exhibit high-lying HOMOs, strong electron-donating capabilities, and reversible redox behavior. Such properties could make them appealing as components in organic electronics, light-harvesting assemblies, or as ligands in transition-metal chemistry. Their practical utility would depend on the chosen donor atom, backbone length, and substituent pattern.

Status and reception

Donoratomene is primarily a conceptual tool used in theoretical and speculative discussions about electron-rich frameworks. It is not an established term in experimental chemistry, and no validated synthetic routes or materials have been reported in peer-reviewed literature.

See also: donor-acceptor systems, polyenes, organoelement compounds.