In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Synthesis, characterization and electronic properties of naphthalene bridged disilanes, published in 2019, which mentions a compound: 14694-95-2, Name is Tris(triphenylphosphine)chlororhodium, Molecular C54H45ClP3Rh, Synthetic Route of C54H45ClP3Rh.
Synthesis of naphthalene bridged disilanes 2R (R = Me, Ph) was performed via catalytic dehydrocoupling. Using RhCl(PPh3)3 as a catalyst, an intramol. Si-Si bond was readily formed from the corresponding disilyl precursors 1R (R = Me, Ph). For catalytic reactions using (C6F5)3B(OH2), bridged siloxanes (3Ph and 3Me) were observed Attempts to install the 1,8-naphthalene bridge directly onto a disilane resulted in an unusual product (4), containing two silicon centers bridged through one naphthyl group, and another naphthyl group attached to a single Si center. In order for this product to form, both a Si to Si hydrogen shift rearrangement as well as Si-Si bond cleavage occurred. The effects of Ph and Me substitutions on the structure and electronic properties of the synthesized compounds was investigated by single crystal X-ray diffraction, as well as IR and multinuclear NMR spectroscopic anal. In addition, theor. UV-Vis absorption maxima were evaluated using d. functional theory (TD-SCF) on a B3LYP/6-31(++)G** level of theory and compared with exptl. UV-Vis spectroscopic data.
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Reference:
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate