CRYSTAL STRUCTURE AND PROPERTIES OF (1,5-CYCLOOCTADIENE)(h5-PENTAMETHYLCYCLOPENTADIENYL) IRIDIUM(I) [Ir(cod)Cp]
D. V. Bonegardt1,2, I. Yu. Il'in1, T. S. Sukhikh1,2, N. B. Morozova1
1Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk National Research State University, Novosibirsk, Russia
Keywords: иридий(I), 1,5-циклооктадиен, пентаметилциклопентадиен, рентгеноструктурный анализ, термогравиметрия, iridium(I), 1,5-cyclooctadiene, pentamethylcyclopentadiene, single crystal X-ray diffraction analysis, thermogravimetry
Abstract
Volatile iridium(I) complexes [Ir(cod)Cpx] (Cpx = pentamethylcyclopentadienyl Cp*, ethylcyclopentadienyl CpEt, cod = 1,5-cyclooctadiene) are synthesized and characterized by IR and NMR spectroscopy. The [Ir(cod)Cp*] complex is a solid and the [Ir(cod)CpEt] complex is a liquid (SATP). The XRD method is used to determine the structure of the [Ir(cod)Cp*] complex: chemical formula C18H27Ir, space group P21/ с , a = 8,4418(2) Å, b = 9,4764(3) Å, c = 19.2682(5) Å, β = 96.128(1) °, V = 1532.61(7) Å3, Z = 4, d calc = 1.888 g/cm3, m = 8.697 mm-1. The cyclopentadienyl ligand is h5-type coordinated; 1,5-cyclooctadiene have a cis - cis conformation and is h4-type coordinated. The thermal properties of the complexes are studied by thermogravimetry.
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