Synthesis and Structure of Iron (II) Complexes of Functionalized 1,5-Diaza-3,7-Diphosphacyclooctanes
作者:Yulia S. Spiridonova、Yulia A. Nikolaeva、Anna S. Balueva、Elvira I. Musina、Igor A. Litvinov、Igor D. Strelnik、Vera V. Khrizanforova、Yulia G. Budnikova、Andrey A. Karasik
DOI:10.3390/molecules25173775
日期:——
In order to synthesize new iron (II) complexes of 1,5-diaza-3,7-diphosphacyclooctanes with a wider variety of the substituents on ligands heteroatoms (including functionalized ones, namely, pyridyl groups) and co-ligands, it was found that these ligands with relatively small phenyl, benzyl, and pyridin-2-yl substituents on phosphorus atoms in acetonitrile formed bis-P,P-chelate cis-complexes [L2Fe(CH3CN)2]2+
为了合成新的 1,5-二氮杂-3,7-二磷杂环辛烷的铁 (II) 配合物,在配体杂原子(包括功能化的杂原子,即吡啶基)和共配体上具有更广泛的取代基,发现这些在乙腈中磷原子上具有相对较小苯基、苄基和吡啶-2-基取代基的配体形成双-P,P-螯合顺式络合物[L2Fe(CH3CN)2]2+ (BF4)2-,而P -mesityl 取代的配体仅形成单配体 P,P-复合物 [LFe(CH3CN)4]2+ (BF4)2-。3,7-二苄基-1,5-二(1'-(R)-苯乙基)-1,5-二氮杂-3,7-二磷酸环辛烷与四氟硼酸铁 (II) 六水合物在丙酮中反应,得到一种不寻常的双- [L2Fe(BF4)]+BF4-的配体阳离子络合物,根据 X 射线衍射数据,四氟硼酸盐单元的两个氟原子在大致八面体的铁离子处占据两个伪赤道位置。1,5-二氮杂-3,7-二磷杂环辛烷取代四氢呋喃和环戊二烯基二羰基(四氢呋喃)铁(II)