Non-covalent interactions, particularly hydrogen (H)-bonding, are pivotal in determining the properties of molecular clusters and macro-molecules. While the 2011 IUPAC definition initially aimed to simplify the concept of hydrogen bonding, recent studies have identified discrepancies, particularly in electron transfer directions in protonic and hydridic bonds. This article delves into experimental and computational investigations of C₆F₅H⋯NH₃ and Et₃GeH⋯ICF₃ complexes to unravel the nuances of electron density changes in different types of hydrogen bonds. Using a diverse range of electron donors and acceptors, the study provides insights into the spectral characteristics and electronic variations associated with protonic and hydridic hydrogen bonds. By employing low-temperature IR spectroscopy, the researchers obtained valuable data on the complex nature of hydrogen bonding, emphasizing the importance of accurate tools and methodologies in studying these interactions.