Anorganische Chemie, Universitätsstrasse 5, 45117, Essen, Germany.
Dalton Trans. 2011 Sep 7;40(33):8314-9. doi: 10.1039/c1dt10694e. Epub 2011 Jul 22.
The bis-β-diketimine with a meta-phenylene bridge (META-H(2): DIPPN(H)CMeCHCMeN-C(6)H(4)-NCMeCHCMeN(H)DIPP; DIPP = 2,6-iPr-C(6)H(3)) reacted with two equivalents of nBu(2)Mg to give the bis-β-diketiminate complex META-(MgnBu)(2). The latter binuclear magnesium complex was converted to META-MgNH(iPr)BH(3) by reaction with H(2)N(iPr)BH(3). The thermal decomposition of this binuclear iPr-substituted magnesium amidoborane complex has been investigated. In benzene it starts to eliminate H(2) at 90 °C. Two decomposition products could be obtained by fractional crystallization of the residue. The first product is the trinuclear magnesium complex META-Mg(3)iPrNB(H)N(iPr)BH(3) and the second product is (META-Mg)(2). These products have been formed by ligand exchange reactions of the expected complex META-Mg(2)[iPrNB(H)N(iPr)BH(3)] and were characterized by single crystal X-ray diffraction. The central Mg(2+) ion in META-Mg(3)iPrNB(H)N(iPr)BH(3) is not connected to the ligand system and its coordination geometry could be representative of that in a solid-state magnesium salt containing the RNB(H)N(R)BH(3)(2-) ion.
带有间亚苯基桥的双-β-二酮亚胺（META-H（2）：DIPPN（H）CMeCHCMeN-C（6）H（4）-NCMeCHCMeN（H）DIPP；DIPP=2,6-iPr-C（6）H（3））与两当量的 nBu（2）Mg 反应，得到双-β-二酮亚胺配合物 META-（MgnBu）（2）。后者双核镁配合物通过与 H（2）N（iPr）BH（3）反应转化为 META-[MgNH（iPr）BH（3）]（2）。该双核异丙基取代镁酰胺硼烷配合物的热分解已被研究。在苯中，它在 90°C 开始释放 H（2）。通过对残留物进行分步结晶，可以获得两种分解产物。第一种产物是三核镁配合物 META-Mg（3）[iPrNB（H）N（iPr）BH（3）]（2），第二种产物是（META-Mg）（2）。这些产物是通过预期配合物 META-Mg（2）[iPrNB（H）N（iPr）BH（3）]的配体交换反应形成的，并通过单晶 X 射线衍射进行了表征。META-Mg（3）[iPrNB（H）N（iPr）BH（3）]（2）中的中心 Mg（2+）离子与配体系统没有连接，其配位几何形状可以代表含有 RNB（H）N（R）BH（3）（2-）离子的固态镁盐中的配位几何形状。
