2D covalent organic frameworks with kagome (kgm) topology are a promising class of crystalline frameworks that possess both triangular micropores and hexagonal mesopores. These dual-pore structures enable kgm COFs to exhibit unique advantages in s...
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Revisiting sp2 Dilithio Methandiides: From Geometric Curiosity to Simple Bonding Description
Von Wiley-VCH zur Verfügung gestellt
The intriguing tetracoordinate geometry of a dilithio methandiide complex is probed from a coordination chemistry perspective, demonstrating the sp 2 -hybridized nature of the methandiide carbon and the other (non-covalent) interactions responsible for its planarity.
Abstract
The reported tetracoordinate dilithio methandiide complex from Liddle and co-workers (1) is investigated from a coordination chemistry perspective, to probe the origin of its intriguing geometry. Through the application of a variety of computational techniques, non-covalent (steric, electrostatic) interactions are found to be dominant. Further, we arrive at a bonding description which emphasizes the tricoordinate sp 2 -hybridized nature of the central methandiide carbon, differing somewhat from the original proposal. Thus, 1 is distinct from other dilithio methandiides since it contains only one C−Li σ-bond, and is found to be comparable to a simple aryllithium compound, phenyllithium.
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