ɪn məlˈɛkjʊlɚɹ ˈɔːɹbɪɾəl θˈiəɹi, ðɪ ˈæɾəmz ɑːɹ mˈɑːdəld təbi hˈɛld təɡˌɛðɚ baɪ ɐ θɹˈiːsˈɛntɚ fˈoːɹᵻlˈɛktɹɑːn bˈɑːnd sɪmˈɛtɹɪkəl hˈaɪdɹədʒən bˈɑːnd.
In molecular orbital theory, the atoms are modeled to be held together by a 3-center 4-electron bond (symmetrical hydrogen bond).