{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T20:49:33Z","timestamp":1792529373864,"version":"4.5.0"},"reference-count":69,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2003,5,16]],"date-time":"2003-05-16T00:00:00Z","timestamp":1053043200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2003,5,23]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Twenty\u2010four 2,2\u2010di\u2010\n                    <jats:italic>n<\/jats:italic>\n                    \u2010butyl\u2010 and 2,2\u2010diphenyl\u20106\u2010aza\u20101,3\u2010dioxa\u20102\u2010stannabenzocyclononen\u20104\u2010ones, each having a transannular N\u2192Sn bond, have been prepared by one\u2010step reactions of\n                    <jats:italic>\u03b1<\/jats:italic>\n                    \u2010amino acids (\n                    <jats:bold>1\u2009a<\/jats:bold>\n                    \u2013\n                    <jats:bold>l<\/jats:bold>\n                    ), salicylaldehyde (\n                    <jats:bold>2<\/jats:bold>\n                    ), and either di\u2010\n                    <jats:italic>n<\/jats:italic>\n                    \u2010butyltin(\n                    <jats:sc>IV<\/jats:sc>\n                    ) oxide (\n                    <jats:bold>3<\/jats:bold>\n                    ) or diphenyltin(\n                    <jats:sc>IV<\/jats:sc>\n                    ) oxide (\n                    <jats:bold>4<\/jats:bold>\n                    ). The new methodology constitutes an easy, highly efficient one\u2010step synthesis of diorganotin(\n                    <jats:sc>IV<\/jats:sc>\n                    ) derivatives, such as\n                    <jats:bold>5\u2009a<\/jats:bold>\n                    \u2013\n                    <jats:bold>l<\/jats:bold>\n                    and\n                    <jats:bold>6\u2009a<\/jats:bold>\n                    \u2013\n                    <jats:bold>l<\/jats:bold>\n                    , from iminic tridentate ligands without isolation of the Schiff bases. The structures of all the compounds have been established by a combination of\n                    <jats:sup>1<\/jats:sup>\n                    H,\n                    <jats:sup>13<\/jats:sup>\n                    C,\n                    <jats:sup>15<\/jats:sup>\n                    N, and\n                    <jats:sup>119<\/jats:sup>\n                    Sn NMR spectroscopy, IR spectroscopy, mass spectrometry, and elemental analysis. In all cases, the\n                    <jats:sup>119<\/jats:sup>\n                    Sn chemical shifts, as well as the\n                    <jats:sup>1<\/jats:sup>\n                    <jats:italic>J<\/jats:italic>\n                    (\n                    <jats:sup>119<\/jats:sup>\n                    Sn,\n                    <jats:sup>13<\/jats:sup>\n                    C) coupling constants, are indicative of pentacoordinated tin atoms in solution. The structures of compounds\n                    <jats:bold>5\u2009a, d, f, 6\u2009a, b, b\u2010racemic, c, d, f, g<\/jats:bold>\n                    , and\n                    <jats:bold>l<\/jats:bold>\n                    have been established by single\u2010crystal Xray diffraction analyses. The tin atoms in\n                    <jats:bold>5\u2009d, f, 6\u2009a, b, b\u2010racemic, c, d, g<\/jats:bold>\n                    , and\n                    <jats:bold>l<\/jats:bold>\n                    each have a distorted trigonal\u2010bipyramidal (TBP) geometry, with the oxygen atoms from the phenol and carboxylate moieties occupying the axial positions, and the imine nitrogen and phenyl or\n                    <jats:italic>n<\/jats:italic>\n                    \u2010butyl substituents occupying the equatorial positions. Compounds\n                    <jats:bold>5\u2009a<\/jats:bold>\n                    and\n                    <jats:bold>6\u2009f<\/jats:bold>\n                    show distorted octahedral (DOC) geometries due to intermolecular coordination of the carbonyl oxygen to the tin atom, in a\n                    <jats:italic>trans<\/jats:italic>\n                    disposition to the N\u2192Sn bond, leading to trimeric\n                    <jats:bold>5\u2009a<\/jats:bold>\n                    and a polymeric structure for compound\n                    <jats:bold>6\u2009f<\/jats:bold>\n                    . Additionally, measurement of the one\u2010bond coupling constants\n                    <jats:sup>1<\/jats:sup>\n                    <jats:italic>J<\/jats:italic>\n                    (\n                    <jats:sup>119<\/jats:sup>\n                    Sn,\n                    <jats:sup>13<\/jats:sup>\n                    C) in diphenyltin(\n                    <jats:sc>IV<\/jats:sc>\n                    ) complexes (\n                    <jats:bold>6\u2009a<\/jats:bold>\n                    \u2013\n                    <jats:bold>l<\/jats:bold>\n                    ) and their correlation with the CSn\u2010C bond angles has allowed the derivation of an equation that can be applied to assess the geometry around the tin atom for other diphenyltin(\n                    <jats:sc>IV<\/jats:sc>\n                    ) compounds in solution.\n                  <\/jats:p>","DOI":"10.1002\/chem.200204260","type":"journal-article","created":{"date-parts":[[2003,5,23]],"date-time":"2003-05-23T09:01:40Z","timestamp":1053680500000},"page":"2291-2306","source":"Crossref","is-referenced-by-count":105,"title":["One\u2010Step Preparation, Structural Assignment, and Xray Study of 2,2\u2010Di\u2010\n                    <i>n<\/i>\n                    \u2010butyl\u2010 and 2,2\u2010Diphenyl\u20106\u2010aza\u20101,3\u2010dioxa\u20102\u2010stannabenzocyclononen\u20104\u2010ones Derived from Amino Acids"],"prefix":"10.1002","volume":"9","author":[{"given":"Hiram I.","family":"Beltr\u00e1n","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luis S.","family":"Zamudio\u2010Rivera","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Teresa","family":"Mancilla","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rosa","family":"Santillan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Norberto","family":"Farf\u00e1n","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2003,5,16]]},"reference":[{"key":"e_1_2_6_1_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-328X(00)98727-8"},{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/0022-328X(90)85444-4"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1039\/P29880001787"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-328X(02)01418-3"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/0022-328X(86)80169-3"},{"key":"e_1_2_6_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/0022-328X(87)85038-6"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/0022-328X(88)80390-5"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-328X(97)00183-6"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-328X(99)00054-6"},{"key":"e_1_2_6_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-328X(00)00285-0"},{"key":"e_1_2_6_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0020-1693(99)00477-6"},{"key":"e_1_2_6_12_2","doi-asserted-by":"publisher","DOI":"10.1139\/v01-107"},{"key":"e_1_2_6_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-328X(97)00636-0"},{"key":"e_1_2_6_14_2","doi-asserted-by":"publisher","DOI":"10.1002\/hc.520040603"},{"key":"e_1_2_6_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-328X(98)00893-6"},{"key":"e_1_2_6_16_2","doi-asserted-by":"publisher","DOI":"10.1016\/0277-5387(96)00109-X"},{"key":"e_1_2_6_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-328X(97)00193-9"},{"key":"e_1_2_6_18_2","doi-asserted-by":"publisher","DOI":"10.1139\/v98-181"},{"key":"e_1_2_6_19_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic970886g"},{"key":"e_1_2_6_20_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0166-1280(97)00087-0"},{"key":"e_1_2_6_21_2","first-page":"3","volume":"7","author":"Farf\u00e1n N.","year":"1999","journal-title":"Main Group Chem. 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