A hydrogen bond is formed between hydrogen attached to highly electronegative atoms (nitrogen, oxygen, and fluorine) which are small in size too and the non-bonding pair of electrons of another such atom that may be present in the same molecule or in another molecule but is not directly linked to it with a covalent bond. But when we talk about chlorine, it doesn't form hydrogen bond due to its large size. But what happens in the case of carbon more precisely 'carbenes'? It's small in size, has a lone pair of electrons and is somehow more electronegative too. Does it help form H-bond like N, O, and F do?