155563-63-6Relevant academic research and scientific papers
(Tellurolato)chromium complexes. Syntheses and crystal structures of CpCr(CO)3(TePh), [CpCr(CO)2(TePh)]2, and [CpCr(TePh)]2Te
Goh, Lai Yoong,Tay, Meng S.,Wei, Chen
, p. 1813 - 1820 (1994)
The predominant product isolated from the reaction of [CpCr(CO)3]2 (1; Cp = η5-C5H5) with 1 molar equiv of Ph2Te2 varies with reaction conditions as follows: CpCr(CO)3(TePh) (2; 67% yield, from an instantaneous reaction at ambient temperature), [CpCr(CO)2(TePh)]2 (3; 80% yield, after 4.5 h at 60°C), and [CpCr(TePh)]2Te (4; 70% yield, after 4 h at 80°C). Thermolysis studies showed an interconversion between 2 and 3, accompanied by slow total decarbonylation to 4. An NMR-tube reaction of [CpCr(CO)2]2 with Ph2Te2 at 70°C for 2 h resulted in the formation of 2 (58%), 3 (4%), and 4 (34%). The complexes, 2-4 have been elementally, spectrally, and structurally characterized. Crystal data: 2, monoclinic, space group P21/c, a = 10.8250(8) A?, b = 8.6891(6) A?, c = 15.5263(7) A?, β = 98.880(5)°, V = 1442.9(2) A?3, Z = 4; 3, triclinic, space group P1, a = 10.0493(8) A?, b = 11.0612(6) A?, c = 13.263(1) A?, α = 102.021(6)°, β = 93.791(7)°, γ = 105.652(5)°, V = 1376.7(2) A?3, Z = 2; 4, monoclinic, space group P21/n, a = 10.1595(7) A?, b = 21.505(1) A?, c = 10.615(1) A?, β = 95.607(8)°, V = 2308.1(5) A?3, Z = 4.
