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oai:figshare.com:article/34027406 2026-09-29T19:10:53Z category_1 category_4 category_915 category_12 category_15 category_16 category_19 category_21 category_272 category_873 category_128 category_132 category_134 portal_63 item_type_6 month_year_09_2026

Silane, Germane, and Stannane Activation by an Iron Dinitrogen Compound to Access Dimetallotetrylides Joydeb Mondal (25138670) Gautam K. Mehta (25138673) Tianyi Zhang (87298) Marco Flores (1310517) John Kouvetakis (2086099) Ryan J. Trovitch (1497598) Biophysics Biochemistry Physical Sciences not elsewhere classified Cell Biology Neuroscience Physiology Pharmacology Biotechnology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Hematology Infectious Diseases Virology iron dinitrogen compound exhibit bent cores bridging tetrel atom >- hydride ligands 4 </ sub 3 </ sub 2 </ sub fe ]< sub h )< sub cis </ linear fe ray diffraction phase structures observation attributed generalized methodology dimetallotetrylide possesses decreasing π crystal x corresponding silicide bond character ambient temperature Upon adding Group 14 hydride gases to the recently prepared iron dinitrogen dimer, [(Triphos)Fe]2(μ-N2) (Triphos = H3CC(CH2PPh2)3), a generalized methodology for the preparation of diirontetrylides has been realized. The all-bond activation of SiH4 afforded the corresponding silicide, (Triphos)(H)2FeSiFe(H)2(Triphos), which was found to feature a linear Fe2Si core by single-crystal X-ray diffraction. Activation of GeH4 and SnH4 by [(Triphos)Fe]2(μ-N2) yielded (Triphos)(H)2FeGeFe(H)2(Triphos) and (Triphos)(H)2FeSnFe(H)2(Triphos), respectively, which exhibit bent cores and short iron–tetrel distances indicative of double-bond character. Each dimetallotetrylide possesses cis-hydride ligands that are coupled to magnetically equivalent Triphos phosphine positions, but not the bridging tetrel atom, in solution at ambient temperature. Computational studies revealed optimized geometries that are consistent with the solution-phase structures, as well as iron–tetrel bond orders that decrease from 1.55 (Si) to 1.43 (Ge) to 1.27 (Sn) upon descending Group 14, an observation attributed to decreasing π-overlap. 2026-09-29T00:00:00Z Text Journal contribution 10.1021/acs.inorgchem.6c03273.s001 https://figshare.com/articles/journal_contribution/Silane_Germane_and_Stannane_Activation_by_an_Iron_Dinitrogen_Compound_to_Access_Dimetallotetrylides/34027406 CC BY-NC 4.0