It is widely accepted that the use of alkyl zinc and alkyl zinc alkoxide precursors are usually preferred instead of the popularly used zinc acetate precursor to obtaining better control on the synthesis of different zinc-oxo clusters and nanostructures. However, there are very few reports about zinc dialkoxides precursors and not many ones studying these precursors in a typical hydrolysis-condensation route. In the present report, we focus on the study of zinc dimethoxide structural features and their Raman spectroscopy signatures in the absence and presence of tetrahydrofuran (THF) adduct. Our theoretical calculations using Density Functional Theory (DFT) reveal that monomeric, dimeric and trimeric zinc dimethoxide exhibit distinctive Raman signatures, particularly at the low frequency region. In addition, some particular vibrational modes of zinc dimethoxide also evidenced some characteristic shifting and splitting in the presence of explicit THF coordination molecules. Our experimental approach using surface-enhanced Raman spectroscopy (SERS) reveals a quite complex combination of Raman signatures associated to zinc dimethoxide clusters corroborating tetrahydrofuran coordination and further early hydrolysis-condensation scenario. We aim to shed some light on the chemical structure of this particular zinc dimethoxide precursor and some of its early hydrolysis-condensation products employing a powerful, popular and versatile technique such as Raman spectroscopy as it can be a promising candidate to access and simultaneously monitor the formation of novel zinc-oxo clusters and nanostructures.

人们普遍认为，通常优选使用烷基锌和烷基锌醇盐前体而不是常用的醋酸锌前体，以更好地控制不同锌氧簇和纳米结构的合成。然而，关于二烷氧基锌前体的报道很少，而且在典型的水解-缩合路线中研究这些前体的报道也很少。在本报告中，我们专注于在四氢呋喃 (THF) 加合物不存在和存在的情况下研究二甲醇锌结构特征及其拉曼光谱特征。我们使用密度泛函理论 (DFT) 进行的理论计算表明，单体、二聚体和三聚体二甲醇锌表现出独特的拉曼特征，尤其是在低频区域。此外，二甲醇锌的一些特定振动模式也证明了在显式 THF 配位分子存在下的一些特征性移动和分裂。我们使用表面增强拉曼光谱 (SERS) 的实验方法揭示了与二甲醇锌簇相关的拉曼特征的相当复杂的组合，证实了四氢呋喃配位和进一步的早期水解-缩合情景。我们的目标是阐明这种特殊的二甲醇锌前体及其一些早期水解缩合产物的化学结构，这些产物采用了强大的、