Structural Data Showing the Existence of LDI Bonds between the Rings of Dimeric Cofacial Siloxysilicon Phthalocyanines

In
a pair of earlier papers, the existence of long directional
interaction bonds, LDI bonds, was postulated on the basis of data
for cofacial oligomeric siloxysilicon phthalocyanines from this laboratory
and data for other cofacial oligomeric phthalocyanines from the literature.
However, the combined data are not fully suited to the purpose for
which they were used. Here an alternative approach is taken in which
a carefully chosen group of dimeric cofacial siloxysilicon phthalocyanines
is used. Structural data derived from these phthalocyanines is examined
in some detail to determine where it conforms to normal expectations
and where it does not. To a high degree of certainty, consideration
of the results obtained shows that long directional (LDI) bonds exist
in dimeric cofacial siloxysilicon phthalocyanines. The new data also
provide an opportunity for other research on chemical bonds.

在两篇早期研究论文中，研究人员依托本实验室的面对面寡聚硅氧基硅酞菁实验数据，以及文献报道的其他面对面寡聚酞菁相关数据，提出了长程定向相互作用键（long directional interaction bonds，LDI键）的存在假说。然而，这些整合后的数据集并不完全适配其最初被采用时的研究目的。本文采用了一种替代性研究策略，选取一组经过严格筛选的二聚体面对面硅氧基硅酞菁作为研究样本。本文对从该类酞菁化合物中获取的结构数据展开了细致剖析，以甄别其哪些部分符合常规学术预期，哪些部分存在偏离。经极高置信度的验证，对所得结果的分析表明，二聚体面对面硅氧基硅酞菁中确实存在长程定向相互作用键（LDI键）。本次获取的全新数据还为化学键领域的其他相关研究提供了宝贵契机。