Preparation, ligand-exchange reactions, and alkylation reactions of some carbon disulphide derivatives of iron
作者:Paul Conway、Seamus M. Grant、A. R. Manning
DOI:10.1039/dt9790001920
日期:——
which may be polynuclear. When L = CNMe or CNBut further reaction occurs to give [Fe(CO)L3(CS2)] and then a carbonyl-free complex. Ligand-exchange reactions of the complexes where L = PPh3 or P(OPh)3 with the phosphorus(III) ligands L′ gives [Fe(CO)2L(L′)(CS2)] rapidly and then [Fe(CO)2L′2(CS2)] much more slowly. The extent of this reaction depends on ligand size and is more complete for the less bulky
许多的[Fe(CO)2大号2(η 2 -CS 2复合物已从[铁制备)] 2(CO)9 ]和L CS 2溶液[L = PR 3,P(OR)3,或CNR]。当L = P(OMe)3时,分离出第二不稳定产物,其可能是多核的。当L = CNME或CNBu吨进一步发生反应,得到的[Fe(CO)L- 3(CS 2)],然后一个复杂的自由羰基。L = PPh 3或P(OPh)3与磷(III)配体L'的配合物的配体交换反应得到[Fe(CO)2 L(L')(CS 2)]迅速,然后[Fe(CO) 2 L' 2(CS 2)]缓慢得多。该反应的程度取决于配体的大小,并且对于较小体积的L'而言更完整。但是,配体的碱性也非常重要,因此L'= AsBu n 3仅置换一个L = P(OPh) 3,而对于L'= SbEt 3则该反应是不完全的。另一方面,非常笨重但基本的L'= PPr i 3将完全取代较小笨重但基本L = P(OPh)