Tri(tert-butyl) plumbyl derivatives of Group 14 elements multinuclear magnetic resonance studies: Determination of coupling signs
作者:Max Herberhold、Volker Tröbs、Bernd Wrackmeyer
DOI:10.1016/s0022-328x(97)00090-9
日期:1997.8
coupling constants nJ(207Pb,13C) (n = 1, 2), 1J(207Pb,29Si), 1J(207Pb, 19Sn) and 1J(207Pb, 207Pb) were determined by appropriate 1D heteronuclear double resonance experiments and 2D heteronuclear shift correlations. The influence of the tBu3Pb group on the bonding situation is reflected by sign changes of several coupling constants when compared with analogous trimethyllead derivatives.
通过使六(叔丁基)二lum烷(1)与过量的锂反应来制备三(叔丁基)铅基锂在THF(2)中的溶液。用多种第14组亲电试剂处理该试剂可得到四有机油酸酯化合物t Bu 3 Pb-R(3,R = Me(a),Et(b),n Pr(c),n Bu(d),CH 2 Ph (e),CH 2 SiMe 3(f)),铅基硅烷t Bu 3Pb-SiR 2 1 R 2(4,R 1 = R 2 = Me(a),R 1 = Me,R 2 = t Bu(b),R 1 = Me,R 2 = SiMe 3(c),R 1 = Me,R 2 = Ph(d),R 1 = R 2 = Ph(e)),1铅ger锗烷t Bu 3 Pb-GeMe 3(5a),铅stan庚烷t Bu3 Pb-SnR 3 3(6,R 3 = Me(a),Et(b),n Bu(c),t Bu(d),Ph(e),1,1'-二茂铁基(f)),和hexaorganodiplumbanes