Cobalt Complexes of Silicon and Germanium Heterocyclotriynes with One or Two Cyclyne Rings
摘要:
The synthesis and structural characterization of Ge(OBET)(2), SiPh2(OBET)(Co-2(CO)(6))(2), and Ge(OBET)(2)(Co-2(CO)(6))(2) are reported. Reaction of Li-2(OBET), generated in situ from the reaction of nBuLi and o-(bisethynyl)tolane (OBET)H-2, with GeCl4 in a 2:1 molar ratio gave Ge(OBET)(2) in 64% yield. Ge(OBET)(2) was characterized by H-1 NMR, C-13 NMR, elemental analysis, FDMS, and X-ray crystallography. Co-2(CO)(8) selectively complexes to the bent alkynes adjacent to Ge or Si of Ge(OBET)(2) and SiPh2(OBET) and severely distorts the ligands. Comparisons are made to related complexes.
Cobalt Complexes of Silicon and Germanium Heterocyclotriynes with One or Two Cyclyne Rings
摘要:
The synthesis and structural characterization of Ge(OBET)(2), SiPh2(OBET)(Co-2(CO)(6))(2), and Ge(OBET)(2)(Co-2(CO)(6))(2) are reported. Reaction of Li-2(OBET), generated in situ from the reaction of nBuLi and o-(bisethynyl)tolane (OBET)H-2, with GeCl4 in a 2:1 molar ratio gave Ge(OBET)(2) in 64% yield. Ge(OBET)(2) was characterized by H-1 NMR, C-13 NMR, elemental analysis, FDMS, and X-ray crystallography. Co-2(CO)(8) selectively complexes to the bent alkynes adjacent to Ge or Si of Ge(OBET)(2) and SiPh2(OBET) and severely distorts the ligands. Comparisons are made to related complexes.