“…It determines the shape of an important section of its potential energy surface (PES) and often predetermines the structural response to the interaction partner(s). The class of NIR-type molecules includes halomethanes [12,14,16], formaldehyde and substituted formaldehydes RHCO [13,17], dimethyl ether [15], fluorosilanes [19], fluorophosphines, and fluoroarsines [20], as well as the series of triatomic molecules HNO, HSN, HPO, and HPS [18]. A more extended list of blue-shifted complexes is given in [21].…”