Bowl-shaped molecules, which can be viewed as fragments of fullerenes, have been extensively studied owing to their interesting fundamental properties derived from their unique geometry, and the possibilities for their further functionalization, with potential applications in the field of materials science. Most of the reported concave compounds are based on corannulene or sumanene, the simplest representative fullerene subunits possessing isolated pentagons. Syntheses of concave molecules bearing adjacent pentagons have rarely been reported. Inspired by the structure of N-heterotriangulene, the construction of bowl-shaped compounds containing two fused pentagons and a central nitrogen atom is discussed. Further surface extension of such concave molecules can result in the formation of boat-shaped compounds containing embedded double isolated nitrogen atoms.

中文翻译：

---

在凹面分子中嵌入杂原子和相邻的五边形

碗状分子可以被视为富勒烯的碎片，由于其独特的几何形状衍生出有趣的基本性质，以及它们进一步功能化的可能性，在材料科学领域具有潜在应用，因此已被广泛研究。大多数报道的凹形化合物基于 corannulene 或 sumanene，这是最简单的代表性富勒烯亚基，具有孤立的五边形。很少有报道合成带有相邻五边形的凹分子。受N-杂三元结构的启发，讨论了包含两个稠合五边形和一个中心氮原子的碗状化合物的构建。