Diruthenium Alkynyl Compounds with Phosphonate Capping Groups
摘要:
The reaction between Ru-2(ap)(4)Cl (ap = 2-anilinopyridinate) and LiC C-4-Ph-P(O)(O'Bu)(2) afforded Ru-2(ap)(4)-C C-4-Ph-P(O)(O'Bu)(2) (1), which was further reacted with LiC C-4-Ph-S(CH2)(2)SiMe3 to yield trans-(4-Me3Si(CH2)(2)S-Ph-C C)-Ru-2(ap)(4)-C C-4-Ph-P(O)(O'Bu)(2) (2). trans-Ru-2(DMBA)(4)(C C-4-Ph-P(O)(O'Bu)(2))(2) (3; DMBA = N,N'-dimethylbenzamidinate) was obtained from the reaction between Ru-2(DMBA)(4)(NO3)(2) and either HC C-4-Ph-P(O)(O'Bu)(2) in the presence of Et3N or LiC C-4-Ph-P(O)(O'Bu)(2). Compounds 1-3 were characterized by HR-MS, X-ray diffraction, and voltammetric techniques, which revealed the retention of essential characteristics in molecular and electronic structures upon the phosphonate capping.
Diruthenium Alkynyl Compounds with Phosphonate Capping Groups
摘要:
The reaction between Ru-2(ap)(4)Cl (ap = 2-anilinopyridinate) and LiC C-4-Ph-P(O)(O'Bu)(2) afforded Ru-2(ap)(4)-C C-4-Ph-P(O)(O'Bu)(2) (1), which was further reacted with LiC C-4-Ph-S(CH2)(2)SiMe3 to yield trans-(4-Me3Si(CH2)(2)S-Ph-C C)-Ru-2(ap)(4)-C C-4-Ph-P(O)(O'Bu)(2) (2). trans-Ru-2(DMBA)(4)(C C-4-Ph-P(O)(O'Bu)(2))(2) (3; DMBA = N,N'-dimethylbenzamidinate) was obtained from the reaction between Ru-2(DMBA)(4)(NO3)(2) and either HC C-4-Ph-P(O)(O'Bu)(2) in the presence of Et3N or LiC C-4-Ph-P(O)(O'Bu)(2). Compounds 1-3 were characterized by HR-MS, X-ray diffraction, and voltammetric techniques, which revealed the retention of essential characteristics in molecular and electronic structures upon the phosphonate capping.
New Diruthenium Bis-alkynyl Compounds as Potential Ditopic Linkers
作者:Julia Savchenko、Zhi Cao、Sean N. Natoli、Steven P. Cummings、Boone M. Prentice、Phillip E. Fanwick、Tong Ren
DOI:10.1021/om400799c
日期:2013.11.11
The reaction between Ru-2(ap)4-C = C-4-C6H4-P(O)(O'Bu)(2) and LiC2X afforded trans-XC2-Ru-2(ap)(4)-CC-4C(6)H(4) P(O)(O'Bu)(2), where X is SiMe3 (1), C2SiMe3 (2), C4H (3), or 4-C6H4C2SiMe3 (4). Compound 5, trans(1BuO)(2)(O)P-C6H4-4-C=:-C-Ru2(ap)4-C=C-4-C6H4SC2H4SiMe3, was obtained from the reaction between Ru2(ap)4-C--=-C-4C6H4SC2H4SiMe3 and excess LiC = C-4-C6H4-P(0)((OBu)-Bu-t)2. Compounds 1-5 were characterized by elemental analysis, HRnESI-MS, voltammetric and spectroscopic techniques, and the X-ray diffraction study of 2. The electronic structures of the homologous series 1-3 were investigated using DFT calculations, which revealed both the retention of key features of Ru2 electronic structure upon the introduction of phosphonate capping and subtle dependence on the number of acetylene units (n) across the series.