2-(4-Ethoxyphenlytelluromethyl)tetrahydro-2 H-pyran ( L1) and 2-(2-{4-ethoxyphenyl}telluroethyl)-1,3-dioxane ( L2): synthesis, reactions of L1 with iodine and ligation of L1 with Ru(II), Cu(I), and Hg(II) and L2 with Ru(II). Crystal structures of [RuCl 2( p-cymene)· L1/ L2]

• Published in: Inorganica Chimica Acta Vol. 320; no. 1; pp. 133 - 140
• Main Authors: Singh, Ajai K., Kadarkaraisamy, M., Mishra, M., Sooriyakumar, J., Drake, J.E., Hursthouse, M.B., Light, M.E., Jasinski, Jerry P.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2001
• Subjects: Copper complexes; Crystal structures; Ruthenium complexes; Telluride complexes; Crystal structures; Ruthenium complexes; Telluride complexes; Copper complexes
• ISSN: 0020-1693; 1873-3255
• DOI: 10.1016/S0020-1693(01)00491-1

2-(4-Ethoxyphenlytelluromethyl)tetrahydro-2 H-pyran ( L 1 ) and 2-(2-{4-ethoxyphenyl}telluroethyl)-1,3-dioxane ( L 2 ) have been synthesized by reacting in situ generated ArTe −Na + with an appropriate organic halide. The reaction of L 1 with iodine results in its diiodo derivative [ L 1 (I) 2] ( 1) . The complexes of stoichiometries [CuBr L 1 ] ( 2), [HgBr 2 L 1 ] ( 3) and [RuCl 2( p-cymene)· L 1 / L 2 ] ( 4/ 5) are synthesized. The NMR ( 1H and 13C) in conjunction with elemental analyses, molecular weight and conductance measurements were used to characterize L 1 , L 2 , 1 and the complexes 2– 5. The ligands coordinate in all the complexes through Te, as indicated by the deshielding of CH 2Te signals (up to ∼0.8 ppm) with respect to those of free ligands, except in the case of 2 in which bonding through CH 2O has also to be invoked. Complexes 4 and 5 are characterized structurally (RuTe bond length: 2.619(8) and 2.642(1) Å, respectively). The RuCl bond lengths are in the range 2.404(3)–2.420(6) Å. The TeC(aryl) bond is shorter than the TeC(alkyl) bond in 4 but similar in 5. The two Ru(II) complexes are the first examples with potential (Te, O) ligands of Ar(R)Te type, which have been structurally characterized. 2-(4-Ethoxyphenlytelluromethyl)tetrahydro-2 H-pyran ( L 1 ), 2-(2-{4-ethoxyphenyl}telluroethyl)-1,3-dioxane ( L 2 ), diiodo derivative of L 1 and complexes of stoichiometries [CuBr L 1 ] ( 2), [HgBr 2 L 1 ] ( 3) and [RuCl 2( p-cymene)· L 1 / L 2 ] ( 4/ 5) have been synthesized. The two ligands coordinate in all the complexes through Te, except in the case of 2 in which bonding through CH 2O has also to be invoked. Complexes 4 and 5 are characterized structurally. The RuTe bond lengths are 2.619(8) and 2.642(1) Å in 4 and 5, respectively. The RuCl bond length is in the range 2.404(3)–2.420(6) Å. The TeC(aryl) bond is shorter than the TeC(alkyl) bond in 4 but similar in 5.