TY - JOUR
T1 - Synthesis and structure of novel heterocyclic aminotelluranes
AU - Elyashiv, Iris
AU - Goldschmidt, Zeev
AU - Ben-Arie, Ilana
AU - Aped, Pinchas
AU - Cojocaru, Miriam
AU - Gottlieb, Hugo E.
AU - Albeck, Michael
PY - 1997/10/15
Y1 - 1997/10/15
N2 - A series of novel 6-alkoxy-12H,14H-[1,2,3]benzoxatellurazino[2,3-b]-[1,2,3]benzoxatellurazines 3 was synthesized from tetraalkoxytelluranes and bis(2-hydroxybenzyl)amines. 1H, 13C and 125Te NMR studies suggest that these aminotelluranes, unlike their orthoamidoester analogs, have a rigid trans-fused conformation. A preferential trans-fused conformation was also deduced from ab initio MO calculations of a model oxatellurazinooxatellurazine 7, using the STO-3G and SBK basis sets, and the Gaussian-92 program, which imply that the trans-fused aminotellurane is more stable than the corresponding cis isomer by 10.3 kcal/mol.
AB - A series of novel 6-alkoxy-12H,14H-[1,2,3]benzoxatellurazino[2,3-b]-[1,2,3]benzoxatellurazines 3 was synthesized from tetraalkoxytelluranes and bis(2-hydroxybenzyl)amines. 1H, 13C and 125Te NMR studies suggest that these aminotelluranes, unlike their orthoamidoester analogs, have a rigid trans-fused conformation. A preferential trans-fused conformation was also deduced from ab initio MO calculations of a model oxatellurazinooxatellurazine 7, using the STO-3G and SBK basis sets, and the Gaussian-92 program, which imply that the trans-fused aminotellurane is more stable than the corresponding cis isomer by 10.3 kcal/mol.
KW - Ab initio calculations
KW - Mannich bases
KW - Oxatellurazines
KW - TeNMR
KW - Tetravalent tellurium
KW - Tridentate ligands
UR - http://www.scopus.com/inward/record.url?scp=0041194653&partnerID=8YFLogxK
U2 - 10.1016/s0277-5387(97)00269-6
DO - 10.1016/s0277-5387(97)00269-6
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AN - SCOPUS:0041194653
SN - 0277-5387
VL - 16
SP - 4209
EP - 4215
JO - Polyhedron
JF - Polyhedron
IS - 24
ER -