Similar compounds are formed, although in much smaller yields, when arachno-[B9H14]– is used instead of nido-[B9H12]–. Single-crystal X-ray diffraction studies show the detailed structure of (2) to be [1-Cl-sym-4,4,4,4-(CO)-endo-H-cis-(PMe3)2-arachno-4-IrB8H11]. Comparative n.m.r. spectroscopy (31P, 11B, and 1H) shows that compound (1) has the configuration [asym-4,4,4,4-(CO)-endo-H-cis-(PMe3)2-arachno-4-IrB8H12]
该巢阴离子[B 9 ħ 12 ] -与等摩尔量迅速反应的反式的[Ir(CO)Cl(上PME - 3)2 ]在室温下,以产生新的,无色,九顶点蛛网膜下腔-iridanonaboranes [HIrB 8 H 12(CO)-(PMe 3)2 ](1; 30%产率)和[(HIrB 8 H 11 Cl)(CO)(PMe 3)2 ](2; 7%产率),以及已知的黄色十顶点nido- [ 6,6,6 -H(PMe 3)2 -6-IrB 9H 13 ]。当使用Arachno- [B 9 H 14 ] –代替nido- [B 9 H 12 ] –时,会生成相似的化合物,尽管收率要小得多。单晶X射线衍射研究显示的(2)的详细结构为[1-
氯离子符号-4,4,4,4-(CO) -内切-H-顺- (PME 3)2 -蛛网膜下腔-4-IrB 8 H 11 ]。比较核磁共振波谱仪(31 P,11 B和1 h)示出的是化合物(1)具有结构[