| Abstract
| - Some novel donor−acceptor σ-alkenyl ruthenium complexes were synthesized. The structure of RuTp(CO)(PPh3)(CHCH−CHCH−C6H4−N(CH3)2-p) has been confirmed by X-ray diffraction. The NLO properties of the complexes 5, 6, and 7 reveal that changes induced in the ligands of ruthenium (5a−7a or 5b,6b) have a large impact on the hyperpolarizability.
- The compounds p-R−C6H4−CHCH−C⋮C−TMS (R = NO2, N(CH3)2, OCH3) were obtained fromWittig olefination of TMS−C⋮C−CH2PPh3Br with p-R−C6H4−CHO in THF, which can be desilylatedto give p-R−C6H4−CHCH−C⋮C−H. Treatment of RuHCl(CO)(PPh3)3 with p-R−C6H4−CHCH−C⋮C−H produced RuCl(CO)(PPh3)2(CHCH−CHCH−C6H4−R-p). The later complexes reacted with4-phenylpyridine (PhPy), 2,6-(Ph2PCH2)2C5H3N (PMP), and KTp (Tp = hydridotris(pyrazolyl)borate)to give RuCl(CO)(PhPy)(PPh3)2 (CHCH−CHCH−C6H4−R-p), RuCl(CO)(PMP)(CHCH−CHCH−C6H4−R-p), and RuTp(CO)(PPh3) (CHCH−CHCH−C6H4−R-p), respectively. The structure of RuTp(CO)(PPh3)(CHCH−CHCH−C6H4−R-p) (R = N(CH3)2, 7b) has been confirmed by X-ray diffraction.The NLO properties (hyper-Rayleigh scattering measurements) of the complexes 5, 6, and 7 reveal thatchanges induced in the ligands of ruthenium (5a−7a or 5b,6b) have a large impact on thehyperpolarizability.
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