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Updated: Jun 7, 2026

Efficient Synthesis of All-Carbon Quaternary Centers via the Conjugate Addition of Functionalized Monoorganozinc Bromides
Published on: May 26, 2019
Coordination chemistry of Si5Cl10 with organocyanides
Xuliang Dai1, Kenneth J Anderson, Douglas L Schulz
1Center for Nanoscale Science and Engineering, North Dakota State University, 1735 Research Park Drive, Fargo, ND 58108, USA. xuliang.dai@ndsu.edu
Abstract:
Organocyanides readily coordinate to decachlorocyclopentasilane (Si(5)Cl(10)) to form "inverse sandwich" compounds 1-3 with a planar Si(5) ring. The products were isolated in high yield and fully characterized by elemental analysis, multinuclear NMR, IR and UV-Vis spectroscopy. While the spectroscopic data suggests the presence of a fairly weak interaction between the Si(5) ring and the coordinative organocyanide ligands, single-crystal X-ray diffraction studies of compound 1 and 2 show μ(5)-coordination of the apical cyano nitrogen atoms to the silicon atoms in the Si(5) ring. Distances between silicon atoms and nitrogen atoms are significantly shorter than a Si-N van der Waals bond but longer than the sum of their covalent radii. Multiple interactions between the cyano groups and equatorial Cl atoms, and intermolecular interactions were observed in the solid state for both compounds 1 and 2.
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