All 13 C NMR signals of the poly (arylene) polymers, O-1, S-7, OS-4, OOS-3, OOOS-2, SSO-5 and SSSO-6 (where O is a diphenyleneoxiphthalide unit, S is a diphenylenethiophthalide unit) in dyads and triads were assigned unequivocally with two-dimensional NMR techniques (ge-2D [1 H-1 H] COSY; ge-2D [1 H-13 C] HSQC and ge-2D [1 H-13 C] HMBC) and for each atom, the increments of the shifts are determined. For structurally similar carbon atoms of the phthalide cycle and heteroaromatic fragments of the skeletal chain, additive signal splitting schemes in phthalide centered dyads and in diphenylene oxide and in diphenylene sulfide centered triads are considered, based on taking into account the contributions to their shielding of adjacent and distant substituents. It was shown that the nature of the splitting of the signals of each of the twenty carbon atoms in 3,3-bisphenylphthalide fragments is determined by the type of carbon atom (tertiary or quaternary, even or odd), the type of heteroatoms in adjacent heteroaromatic fragments, their distance from the identified carbon nucleus, and their polyad symmetry. The results obtained in this article will greatly facilitate our further studies, and, in particular, will allow us to study the microstructure of statistical copolymers based on the asymmetric OS monomer at the dyad and triad levels.

中文翻译：

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基于二苯醚和二苯硫醚的共聚（亚芳基）苯酞中二元和三元分裂的核磁共振研究

聚（亚芳基）聚合物、O-1、S-7、OS-4、OOS-3、OOOS-2、SSO-5 和 SSSO-6 的所有 13 C NMR 信号（其中 O 是二苯氧苯醚单元，S 是使用二维 NMR 技术（ge-2D [1 H-1 H] COSY；ge-2D [1 H-13 C] HSQC 和 ge-2D [1 H-13 C] HMBC) 并且对于每个原子，确定位移的增量。对于结构相似的苯酞环碳原子和骨架链的杂芳族片段，基于对邻苯二甲醚中心二元组和二苯醚和二苯硫醚中心三元组的屏蔽作用，考虑了加性信号分裂方案。和远处的取代基。结果表明，3,3-联苯酞片段中二十个碳原子中每一个的信号分裂的性质取决于碳原子的类型（叔或季，偶数或奇数），相邻杂原子的类型杂芳族碎片，它们与确定的碳核的距离，以及它们的多聚体对称性。本文中获得的结果将极大地促进我们的进一步研究，特别是将使我们能够在二元和三元水平上研究基于不对称 OS 单体的统计共聚物的微观结构。