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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Quadratic and cubic hyperpolarizabilities of nitro-phenyl/-naphthalenyl/-anthracenyl alkynyl complexes
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Quadratic and cubic hyperpolarizabilities of nitro-phenyl/-naphthalenyl/-anthracenyl alkynyl complexes

机译:硝基 - 苯基/ - 萘基/-蒽炔基炔基复合物的二次和立方高锆石

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摘要

1-Nitronaphthalenyl-4-alkynyl and 9-nitroanthracenyl-10-alkynyl complexes [M](C?C-4-C10H6-1-NO2) ([M] = trans-[RuCl(dppe)(2)] (6b), trans-[RuCl(dppm)(2)] (7b), Ru(PPh3)(2)((5)-C5H5) (8b), Ni(PPh3)((5)-C5H5) (9b), Au(PPh3) (10b)) and [M](C?C-10-C14H8-9-NO2) ([M] = trans-[RuCl(dppe)(2)] (6c), trans-[RuCl(dppm)(2)] (7c), Ru(PPh3)(2)((5)-C5H5) (8c), Ni(PPh3)((5)-C5H5) (9c), Au(PPh3) (10c)) were synthesized and their identities were confirmed by single-crystal X-ray diffraction studies. Electrochemical studies and a comparison to the 1-nitrophenyl-4-alkynyl analogues [M](C?C-4-C6H4-1-NO2) ([M] = trans-[RuCl(dppe)(2)] (6a), trans-[RuCl(dppm)(2)] (7a), Ru(PPh3)(2)((5)-C5H5) (8a), Ni(PPh3)((5)-C5H5) (9a), Au(PPh3) (10a)) reveal a decrease in oxidation potential for ruthenium and nickel complexes on proceeding from the phenyl- to naphthalenyl- and then anthracenyl-containing bridge. HOMO LUMO transitions characteristic of MC?C-1-C6H4 to 4-C6H4-1-NO2 charge transfer red-shift and gain in intensity on proceeding to the ruthenium complexes; the low-energy transitions have increasing ILCT character on proceeding from the phenyl- to naphthalenyl- and then anthracenyl-containing bridge. Spectroelectrochemical studies of the Ru-containing complexes reveal the appearance of low-energy bands corresponding to chloro-to-Ru-III charge transfer that red-shift on proceeding from the phenyl- to naphthalenyl- and then anthracenyl-containing bridge. Second-order nonlinear optical (NLO) studies at 1064 nm employing ns pulses and the hyper-Rayleigh scattering technique reveal an increase in quadratic optical nonlinearity upon introduction of metal to the precursor alkyne to afford alkynyl complexes and on proceeding from ligated-gold to -nickel and then to -ruthenium for a fixed alkynyl ligand. Quadratic NLO data of the gold complexes optically transparent at the second-harmonic wavelength reveal an increase in (HRS) on proceeding from the phenyl- to the naphthalenyl-containing complex. Broad
机译:1-硝基萘基-4-炔基和9-硝基蒽烯基-10-炔基配合物[M](C-4-C10H6-1-NO2)([M] =转杂-[RuCl(DPPE)(2)](6B ),反式[RuCl(DPPM)(2)](7B),Ru(PPH3)(2)((5)-C5H5)(8B),Ni(PPH3)((5)-C5H5)(9B), Au(PPH3)(10B))和[M](C 1 -10-C14H8-9-NO 2)([M] =转官 - [RuCl(DPPE)(2)](6C),反式 - [RuCl( DPPM)(2)](7C),Ru(PPH3)(2)((5)-C5H5)(8C),Ni(PPH3)((5)-C5H5)(9C),Au(PPH3)(10C) )被合成,通过单晶X射线衍射研究证实了它们的身份。电化学研究及其与1-硝基苯基-4-炔基类似物的比较[M](C-4-C6H4-1-NO2)([M] =反式 - [RuCl(DPPE)(2)](6A) ,反式[RuCl(DPPM)(2)](7A),Ru(PPH3)(2)((5)-C5H5)(8A),Ni(PPH3)((5)-C 5H5)(9a),au (PPH3)(10A))揭示钌和镍复合物的氧化电位降低,从苯基 - 萘基 - 萘基 - 含蒽酰桥桥接。 HOMO LUMO过渡的MCαC-1-C6H4至4-C6H4-1-NO2电荷转移和强度进入钌配合物的强度;低能量转变在从苯基 - 萘基 - 萘基 - 含蒽基桥上增加ILCT特征。含RU的络合物的光谱电化学研究揭示了对应于氯对Ru-III电荷转移的低能量带的外观,即红旋转从苯基 - 萘基 - 含蒽酰基的桥桥。在2064nm采用NS脉冲和超瑞利散射技术的二阶非线性光学(NLO)研究揭示了在将金属引入前体炔烃时增加二次光学非线性的增加,得到炔基络合物,并从连接金中的进入 - 镍然后加入-Ruthenium的固定炔基配体。金色复合物的二次NLO数据在二次谐波波长下光学透明地揭示了从苯基 - 含萘基的复合物进行的(HRS)的增加。广阔

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