Centro de Astrobiología (Consejo Superior de Investigaciones Científicas - Instituto Nacional de Técnica Aeroespacial), Carretera Torrejón-Ajalvir, Km 4, E-28850 Torrejón de Ardoz, Madrid.
Chem Biodivers. 2012 Jan;9(1):25-40. doi: 10.1002/cbdv.201100036.
The data presented here provide a novel contribution to the understanding of the structural features of HCN polymers and could be useful in further development of models for prebiotic chemistry. The interpretation of spectroscopic and analytical data, along with previous results reported by other authors, allowed us to propose a mechanism for the aqueous polymerization of HCN from its primary and simplest isolated oligomer, the diaminomaleonitrile (DAMN) tetramer. We suggest that 'insoluble black HCN polymers' are formed by an unsaturated complex matrix, which retains a significant amount of H(2) O and important bioorganic compounds or their precursors. This polymeric matrix can be formed by various motifs of imidazoles and cyclic amides, among others. The robust formation of HCN polymers assayed under several conditions seems to explain the plausible ubiquity of these complex substances in space.
这里呈现的数据为理解 HCN 聚合物的结构特征提供了新的贡献，并可能有助于进一步开发前生物化学模型。光谱和分析数据的解释，以及其他作者之前的结果，使我们能够提出 HCN 从其最初和最简单的分离低聚物——二氨基丙二腈（DAMN）四聚体在水溶液中聚合的机制。我们认为，“不溶性黑色 HCN 聚合物”是由不饱和复杂基质形成的，该基质保留了大量的 H(2)O 和重要的生物有机化合物或其前体。这种聚合基质可以由各种咪唑和环酰胺等的结构组成。在多种条件下测定的 HCN 聚合物的稳健形成似乎解释了这些复杂物质在太空中广泛存在的可能性。
