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Organometallic-Organic Hybrid Crystals from Ferrocenyl Dipyridine and Binaphthol: Different Crystal Structures and Nonlinear Optical Properties Depending upon the Reaction Medium and Optical Purity of Binaphthol
The hydrogen bond directed molecular recognition between 1,1?-bis(ethenyl-4-pyridyl)-ferrocene (1) and (¡À)-1,1?-binaphthol (2)/(-)-1,1?- binaphthol ((-)-2) has been studied by cocrystallization in different solvents. Single-crystal X-ray structures reveal that 3:2, 2:1, and 1:1 complexes (3, 4, and 5, respectively) of 1,1?-bis(ethenyl-4-pyridyl)ferrocene (1) and (¡À)-1,1-binaphthol (2) are formed in tetrahydrofuran, methanol, and ethanol, respectively. 5 has a noncentrosymmetric packing arrangement, and an efficiency of 0.3 times that of urea in second-harmonic generation has been measured at 1295 nm. An X-ray crystal structure of 6, 1:1 complex of 1 with (-)-2 in ethanol, reveals that all the molecular dipoles are aligned in the same direction (i.e, a polar crystal), but 6 has modest nonlinear optical properties (ca. 0.4 times that of urea).
Organometallic-Organic Hybrid Crystals from Ferrocenyl Dipyridine and Binaphthol: Different Crystal Structures and Nonlinear Optical Properties Depending upon the Reaction Medium and Optical Purity of Binaphthol
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Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion