Synthesis,crystal structure and mass transport properties of novel thallium ion precursors for MOCVD applications

Graziella Malandrino; Anna M.Borzi; Francesco Castelli; Ignazio L.Fragala

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Synthesis,crystal structure and mass transport properties of novel thallium ion precursors for MOCVD applications

机译：用于MOCVD的新型th离子前体的合成，晶体结构和传质性能

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The reaction of Tl_2CO_3 with 1,1,1,5,5,5-hexafluoro-2,4-pentanedione (Hhfa) and diglyme {CH_3O(CH_2CH_2O)_2CH_3} or tetraglyme {CH_3O(CH_2CH_2O)_4CH_3} in dichloromethane yields the anhydrous,thermally and air stable,volatile Tl(hfa)-diglyme and Tl(hfa)-tetraglyme adducts.They have been characterized by single crystal X-ray diffraction,elemental analysis,'H and 13C NMR,IR and mass spectroscopy.Thermal and mass-transport properties have been investigated using thermogravimetric and differential scanning calorimetric measurements.There is evidence that both precursors are very low melting and volatile,and can be used as liquid Tl sources.Both adducts have been successfully applied to metal-organic chemical vapor deposition of thallium containing films.

机译：Tl_2CO_3与1,1,1,5,5,5-六氟-2,4-戊二酮（Hhfa）和二甘醇二甲醚{CH_3O（CH_2CH_2O）_2CH_3}或四甘醇二甲醚{CH_3O（CH_2CH_2O）_4CH_3}的反应生成无水，热和空气稳定的挥发性Tl（hfa）-二甘醇二甲醚和Tl（hfa）-四甘醇二甲酸酯加合物。它们的特征在于单晶X射线衍射，元素分析，'H和13C NMR，IR和质谱。使用热重和差示扫描量热法对传质进行了研究。有证据表明这两种前体的熔点和挥发性都非常低，可以用作液态Tl源。两种加合物已成功应用于金属有机化学气相沉积中含films的薄膜。

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《Dalton transactions: An international journal of inorganic chemistry》 |2003年第3期|共6页
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Graziella Malandrino; Anna M.Borzi; Francesco Castelli; Ignazio L.Fragala;
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Synthesis,crystal structure and mass transport properties of novel thallium ion precursors for MOCVD applications

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