作者:Dirk Kuppert、Jürgen Sander、Christian Roth、Michael Wörle、Thomas Weyhermüller、Guido J. Reiss、Uwe Schilde、Iris Müller、Kaspar Hegetschweiler
DOI:10.1002/1099-0682(200109)2001:10<2525::aid-ejic2525>3.0.co;2-z
日期:2001.9
The overall stabilities of the bis complexes [ML2]2+ decrease in the order cis-cptn > cis-dap > trans-cptn > ampy > trans-dap. The considerably lower stabilities of the ampy complexes as compared to the corresponding cis-dap complexes indicate metal binding to the two primary amino groups of the latter ligand. This was supported by molecular mechanics calculations (CuII and CoIII complexes) and confirmed
cis-3,4-Diaminopyrrolidine (cis-dap), trans-3,4-diaminopyrrolidine (trans-dap), cis-1,2-cyclopentanediamine (cis-cptn), and trans-1,2-cyclopentanediamine (trans-dap) cptn) 已制备成多克数量。这些配体和 3-氨基吡咯烷 (ampy) 与 NiII、CuII、ZnII 和 CdII 的络合已通过电位滴定和分光光度滴定在溶液中进行了研究。三胺 cis-dap 和 trans-dap 的复合物显示出形成质子化物质的明显趋势,例如 [MII(HL)]3+、[MII(HL)2]4+ 和 [MII(HL)L]3 +,表明配体 L 的双齿配位模式。相应 CuII 配合物的 UV/Vis 光谱进一步证实了与反式 CuN4 几何结构的双齿配位。bis