TY - JOUR
T1 - Phenyltellurium halide complexes of iron cyclopentadienyl dicarbonyl
T2 - Synthesis and molecular structures of CpFe(CO)2TePh, CpFe(CO) 2TeBr2Ph, CpFe(CO)2TeBrPh(μ-Br)Br 3TePh, and PhTeI3(C4H8O)
AU - Torubaev, Yu V.
AU - Pasynskii, A. A.
AU - Skabitskii, I. V.
N1 - Funding Information:
This work was supported by the Russian Foundation for Basic Research (project no. 06-03-32891), the Division of Chemistry and Materials Science of the Russian Academy of Sciences (grant no. OKh 1.5), and the Presidium of the Russian Academy of Sciences (grant no. 8P15).
PY - 2009/5/1
Y1 - 2009/5/1
N2 - The bromination of CpFe(CO)2TePh (I) affords the monomeric complex CpFe(CO)2TePhBr2 (II) as the major product and crystals (III), being a cocrystallizate of complexes II and CpFe(CO) 2TeBrPh(μ-Br)TePhBr3 (IIIA). Complex IIIA contains a PhTeBr3 molecule, which is weakly bound because of the lone electron pair (LEP) of the bridging bromine atom of molecule II. An analogous weak interaction with the LEP of oxygen in tetrahydrofuran (TeO 2.893 Å) is observed in the PhTeI3(THF) adduct (IV), which is a dimer with two bridging iodine atoms and can be obtained by the crystallization of PhTeI 3 from THF. According to the X-ray diffraction data, the Fe-Te distances in compounds II and IIIA (on the average, 2.5 Å) differ slightly and are similarly shortened by 0.2 Å compared to the sum of the covalent radii of iron and tellurium. The secondary interactions Tehalide and Teπ system of the phenyl ligand are discussed.
AB - The bromination of CpFe(CO)2TePh (I) affords the monomeric complex CpFe(CO)2TePhBr2 (II) as the major product and crystals (III), being a cocrystallizate of complexes II and CpFe(CO) 2TeBrPh(μ-Br)TePhBr3 (IIIA). Complex IIIA contains a PhTeBr3 molecule, which is weakly bound because of the lone electron pair (LEP) of the bridging bromine atom of molecule II. An analogous weak interaction with the LEP of oxygen in tetrahydrofuran (TeO 2.893 Å) is observed in the PhTeI3(THF) adduct (IV), which is a dimer with two bridging iodine atoms and can be obtained by the crystallization of PhTeI 3 from THF. According to the X-ray diffraction data, the Fe-Te distances in compounds II and IIIA (on the average, 2.5 Å) differ slightly and are similarly shortened by 0.2 Å compared to the sum of the covalent radii of iron and tellurium. The secondary interactions Tehalide and Teπ system of the phenyl ligand are discussed.
UR - http://www.scopus.com/inward/record.url?scp=66549127275&partnerID=8YFLogxK
U2 - 10.1134/S1070328409050054
DO - 10.1134/S1070328409050054
M3 - Article
AN - SCOPUS:66549127275
SN - 1070-3284
VL - 35
SP - 341
EP - 346
JO - Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
JF - Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
IS - 5
ER -