The 1,2-dihydro-1,2-diphosphete-1,4-diphosphadiene equilibrium. X-ray structures of [μ2,μ2,η1,η1-(Ph)8C4P4]W2(CO)6 and [μ1,μ1-(Ph)4C2P2]W2(CO)10
作者:Nicole Maigrot、Claude Charrier、Louis Ricard、François Mathey
DOI:10.1016/s0277-5387(00)84016-4
日期:1990.1
Abstract As its P2W2(CO)10 dicomplex, the ring of 1,2,3,4-tetraphenyl-1,2-dihydro-1,2-diphosphete undergoes a reversible conrotatory opening to give the corresponding 1,4-diphosphadiene dicomplex which can be trapped as [4+2] cycloadducts with N-phenylmaleimide, maleic anhydride, acrylonitrile and benzaldehyde. X-ray crystal structure analysis indicates a weakening of the PP bond of the 1,2-dihydro-1
摘要1,2,3,4-四苯基-1,2-二氢-1,2-二磷酸环作为其P2W2(CO)10双络合物,经历了可逆的旋转开口,得到了相应的1,4-二磷酸二烯二络合物,可与N-苯基马来酰亚胺,马来酸酐,丙烯腈和苯甲醛以[4 + 2]环加成物形式捕集。X射线晶体结构分析表明,络合后1,2-二氢-1,2-二磷酸的PP键减弱:PP键的长度从自由环的2.248(1)A增加到2.281 (3)复杂物中的A,说明为什么仅在复杂物中会发生这种可逆打开。