In solution at low concentrations this monomeric structure predominates, but at higher concentrations evidence suggests weak association between SeF4 molecules leading to a distorted octahedral coordination around the selenium atom.
ɪn səlˈuːʃən æt lˈoʊ kˌɑːnsəntɹˈeɪʃənz ðɪs mˌɑːnoʊmˈɛɹɪk stɹˈʌktʃɚ pɹɪdˈɑːmᵻnˌeɪts, bˌʌt æt hˈaɪɚ kˌɑːnsəntɹˈeɪʃənz ˈɛvɪdəns sədʒˈɛsts wˈiːk ɐsˌoʊsɪˈeɪʃən bᵻtwˌiːn sˈiː ˈɛf fˈoːɹ mˈɑːlɪkjˌuːlz lˈiːdɪŋ tʊ ɐ dɪstˈɔːɹɾᵻd ˌɑːktɐhˈiːdɹəl koʊˈɔːɹdᵻnˈeɪʃən ɚɹˈaʊnd ðə sɛlˈiːniəm ˈæɾəm.