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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Electronic structures of organometallic compounds of f elements. 64 Does the Zwitterionic nature of the triphenylphosphine oxide ligand manifest itself in its spectrochemical properties?
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Electronic structures of organometallic compounds of f elements. 64 Does the Zwitterionic nature of the triphenylphosphine oxide ligand manifest itself in its spectrochemical properties?

机译:f元素的有机金属化合物的电子结构。 64三苯基膦氧化物配体的两性离子性质是否表现出其光谱化学性质?

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摘要

The triphenylphosphine oxide mono adducts of the moiety tris(eta(5)-cyclopentadienyl)lanthanide(III) (Ln(Cp)(3); Ln = Pr (1), La (2)) were synthesized and structurally characterized. The Ln-O distances of these compounds are noticeably shorter than those of the corresponding THF adducts. A crystal field (CF) analysis of the optical spectra of I leads to a low absolute value of the quadratic CF parameter which is comparable with those of [Pr(CP)(3)(L)](-) adducts with anionic bases but not with [Pr(CP)(3)(MeTHF)]. Reasons for the latter finding are presented.
机译:合成了三(eta(5)-环戊二烯基)镧系元素(III)(Ln(Cp)(3); Ln = Pr(1),La(2))的三苯基氧化膦单加合物并对其结构进行了表征。这些化合物的Ln-O距离明显短于相应的THF加合物的Ln-O距离。 I光谱的晶体场(CF)分析导致二次CF参数的绝对值较低,与具有阴离子碱的[Pr(CP)(3)(L)](-)加合物的绝对值相当,但不适用于[Pr(CP)(3)(MeTHF)]。提出后一个发现的原因。

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