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Phosphorus-Bismuth Peri-Substituted Acenaphthenes: A Synthetic, Structural, and Computational Study.
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-04-09 , DOI: 10.1021/acs.inorgchem.0c00317
Phillip S Nejman 1 , Thomasine E Curzon 1 , Michael Bühl 1 , David McKay 1 , J Derek Woollins 2 , Sharon E Ashbrook 1 , David B Cordes 1 , Alexandra M Z Slawin 1 , Petr Kilian 1
Affiliation  

A series of acenaphthene species with a diisopropylphosphino group and a variety of bismuth functionalities in the peri positions were synthesized and fully characterized, including single-crystal X-ray diffraction. The majority of the reported species feature a relatively rare interpnictogen P-Bi bond. The series includes the phosphine-bismuthine Acenap(PiPr2)(BiPh2) (2; Acenap = acenaphthene-5,6-diyl), which was subjected to a fluorodearylation reaction to produce Acenap(PiPr2)(BiPhX) (5-8 and 10; X = BF4-, Cl, Br, I, SPh), displaying varying degrees of ionicity. The geminally bis(acenaphthyl)-substituted [Acenap(PiPr2)]2BiPh (3) shows a large through-space coupling of 17.8 Hz, formally 8TSJPP. Coupling deformation density calculations confirm the double through-space coupling pathway, in which the P and Bi lone pairs mediate communication between the two 31P nuclei. Several synthetic routes toward the phosphine-diiodobismuthine Acenap(PiPr2)(BiI2) (9) have been investigated; however, the purity of this, surprisingly thermally stable potential synthon, remains poor.

中文翻译:

磷-铋周边取代的Ac烯:合成,结构和计算研究。

合成并充分表征了一系列具有二异丙基膦基和在周边位置具有多种铋官能度的基物质,包括单晶X射线衍射。大多数报道的物种具有相对罕见的interpnictogen原P-Bi键。该系列产品包括膦-铋Acenap(PiPr2)(BiPh2)(2; Acenap = -5-5,6-二基),将其进行氟脱芳基反应以生成Acenap(PiPr2)(BiPhX)(5-8和10 ; X = BF4-,Cl,Br,I,SPh),显示不同程度的离子性。双(ac基)双取代的[Acenap(PiPr2)] 2BiPh(3)显示出17.8 Hz的大通空耦合,正式为8TSJPP。耦合变形密度的计算确定了双重贯穿空间耦合路径,其中P和Bi孤对介导两个31P核之间的通信。已经研究了几种通往膦-二碘铋铋Acenap(PiPr2)(BiI2)(9)的合成途径;然而,其纯度,令人惊奇的热稳定的潜在合成子仍然很差。
更新日期:2020-04-24
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