Synthesis and characterization of transition-metal-substituted germanium and tin azides: X-ray crystal structures of [{Fe(CO) 2 (cp)} 2 E(N 3 ) 2 ](cp =η-C 5 H 5 , E = Ge or Sn)
1990; Royal Society of Chemistry; Issue: 10 Linguagem: Inglês
10.1039/dt9900002953
ISSN2050-5671
AutoresMark J. Hampden‐Smith, Deqing Lei, Eileen N. Duesler,
Tópico(s)Synthesis and characterization of novel inorganic/organometallic compounds
ResumoTreatment of acetonitrile solutions of [{Fe(CO)2(cp)}2EX2](cp =η-C5H5; E = Ge, X = Br; E = Sn, X = Cl) with an excess of sodium azide affords the compounds [{Fe(CO)2(cp)}2E(N3)2](E = Ge or Sn). X-Ray crystallographic analyses of these compounds show that the Group 14 atom has a distorted-tetrahedral environment, with enlarged Fe–E–Fe angles and reduced N–E–N angles. Contributions from various resonance forms of the azide ligand are discussed, based on the solid-state data, and are compared to expectations based on solid-state and solution νasym.(N3) and ν(CO) i.r. stretching frequencies.
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