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