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Multidentate hybrid organotellurium ligands 1-(4-methoxyphenyltelluro)-2-[3-(6-methyl-2-pyridyl)propoxy]ethane (L-1) 2-methyl-6-{3-[2-({2-[3-(6-methyl-2-pyridyl)propoxy]-ethyl}telluranyl)et hoxy]propyl}pyridine (L-2) and their metal complexes: formation of 20-membered metallomacrocycle by L-1

Multidentate hybrid organotellurium ligands 1-(4-methoxyphenyltelluro)-2-[3-(6-methyl-2-pyridyl)propoxy]ethane (L-1) 2-methyl-6-{3-[2-({2-[3-(6-methyl-2-pyridyl)propoxy]-ethyl}telluranyl)et hoxy]propyl}pyridine (L-2) and their metal complexes: formation of 20-membered metallomacrocycle by L-1
Multidentate hybrid organotellurium ligands 1-(4-methoxyphenyltelluro)-2-[3-(6-methyl-2-pyridyl)propoxy]ethane (L-1) 2-methyl-6-{3-[2-({2-[3-(6-methyl-2-pyridyl)propoxy]-ethyl}telluranyl)et hoxy]propyl}pyridine (L-2) and their metal complexes: formation of 20-membered metallomacrocycle by L-1
4-MeOC6H4Te-Na+ and Te2- generated in situ by reduction of (4-MeOC6H4Te)(2) and elemental Te, respectively, with sodium borohydride on reaction with 2-[3-(2-chloroethoxy)propyl]-6-methylpyridine in N-2 atmosphere results in 1-(4-methoxyphenyltelluro)-2-[3-(6-methyl-2-pyridyl)propoxy]ethane (L-I) 2-methyl-6-{3-[2-({2-[3-(6-methyl-2-pyridyl)propoxy]ethyl}telluranyl)eth oxy]propyl}pyridine (L 2) as viscous oils. Their proton and carbon-13 NMR spectra are characteristic. The L 2 shows signs of decay within few days. The complexes [PdCl2(L-I)](2) (1), [PtCl2(L-I)](2) (2), [HgBr2(L-I)] (3), [PdCl2(L-2)](2) (6), [PtCl2(L-2)](2) (7) and [(PdCl2)(3)(L-2)(2)](8) have been synthesized and found to give characteristic 1 H and 13 C NMR spectra. The 3 on crystallization from acetone:hexane (2: 1) mixture gives MeOC6H4HgBr (4) and [RTe+-HgBr2]Br- (R = -CH2CH2OCH2CHCH2-(2-(6-CH3-C5H3N))) (5). The crystals of 1, 2 and 4 are subjected to X-ray diffraction and their structures are solved. The I and 2 are 20-membered metallomacrocycles and do not dissociate in solution. The crystals of I and 2 have chloroform and benzene, respectively, in the lattice whereas 4 is a linear ArHgBr type species. The Pd/Pt in 1 and 2 has square planar geometry. The Pd-Te and Pd-N bond lengths in 1 are 2.530(1)/2.5313(9) and 2.097(4) and 2.101(4) angstrom, respectively.
hybrid organotellurium ligands, metal complexes, palladium, platinum, mercury, metallomacrocycle, synthesis, crystal structure, x-ray, bimetallic complex, chemistry, ring, platinum (ii), macrocycles, mercury(ii), palladium(ii), diffraction
0277-5387
1033-1042
Bali, Sumit
f8c555fb-0ff1-4986-bbff-8d86ee3fd984
Singh, Ajai K.
28b56ec1-f3bf-4860-ab62-d6aa1eb96f6c
Drake, John. E.
9b81aeaa-ae78-4274-8087-272564b6b5a0
Light, Mark. E.
cf57314e-6856-491b-a8d2-2dffc452e161
Bali, Sumit
f8c555fb-0ff1-4986-bbff-8d86ee3fd984
Singh, Ajai K.
28b56ec1-f3bf-4860-ab62-d6aa1eb96f6c
Drake, John. E.
9b81aeaa-ae78-4274-8087-272564b6b5a0
Light, Mark. E.
cf57314e-6856-491b-a8d2-2dffc452e161

Bali, Sumit, Singh, Ajai K., Drake, John. E. and Light, Mark. E. (2006) Multidentate hybrid organotellurium ligands 1-(4-methoxyphenyltelluro)-2-[3-(6-methyl-2-pyridyl)propoxy]ethane (L-1) 2-methyl-6-{3-[2-({2-[3-(6-methyl-2-pyridyl)propoxy]-ethyl}telluranyl)et hoxy]propyl}pyridine (L-2) and their metal complexes: formation of 20-membered metallomacrocycle by L-1. Polyhedron, 25 (4), 1033-1042. (doi:10.1016/j.poly.2005.12.010).

Record type: Article

Abstract

4-MeOC6H4Te-Na+ and Te2- generated in situ by reduction of (4-MeOC6H4Te)(2) and elemental Te, respectively, with sodium borohydride on reaction with 2-[3-(2-chloroethoxy)propyl]-6-methylpyridine in N-2 atmosphere results in 1-(4-methoxyphenyltelluro)-2-[3-(6-methyl-2-pyridyl)propoxy]ethane (L-I) 2-methyl-6-{3-[2-({2-[3-(6-methyl-2-pyridyl)propoxy]ethyl}telluranyl)eth oxy]propyl}pyridine (L 2) as viscous oils. Their proton and carbon-13 NMR spectra are characteristic. The L 2 shows signs of decay within few days. The complexes [PdCl2(L-I)](2) (1), [PtCl2(L-I)](2) (2), [HgBr2(L-I)] (3), [PdCl2(L-2)](2) (6), [PtCl2(L-2)](2) (7) and [(PdCl2)(3)(L-2)(2)](8) have been synthesized and found to give characteristic 1 H and 13 C NMR spectra. The 3 on crystallization from acetone:hexane (2: 1) mixture gives MeOC6H4HgBr (4) and [RTe+-HgBr2]Br- (R = -CH2CH2OCH2CHCH2-(2-(6-CH3-C5H3N))) (5). The crystals of 1, 2 and 4 are subjected to X-ray diffraction and their structures are solved. The I and 2 are 20-membered metallomacrocycles and do not dissociate in solution. The crystals of I and 2 have chloroform and benzene, respectively, in the lattice whereas 4 is a linear ArHgBr type species. The Pd/Pt in 1 and 2 has square planar geometry. The Pd-Te and Pd-N bond lengths in 1 are 2.530(1)/2.5313(9) and 2.097(4) and 2.101(4) angstrom, respectively.

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More information

Published date: 2006
Keywords: hybrid organotellurium ligands, metal complexes, palladium, platinum, mercury, metallomacrocycle, synthesis, crystal structure, x-ray, bimetallic complex, chemistry, ring, platinum (ii), macrocycles, mercury(ii), palladium(ii), diffraction

Identifiers

Local EPrints ID: 44372
URI: https://eprints.soton.ac.uk/id/eprint/44372
ISSN: 0277-5387
PURE UUID: b52fdb7d-2fc8-4c01-8163-b3a096aaa905
ORCID for Mark. E. Light: ORCID iD orcid.org/0000-0002-0585-0843

Catalogue record

Date deposited: 01 Mar 2007
Last modified: 14 Mar 2019 01:48

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