ðə dɪstˈɔːɹɾᵻd stɹˈʌktʃɚɹ ɪz bᵻlˈiːvd təbi kˈɔːzd baɪ fˈeɪvɚɹəbəl θˈæliəmθˈæliəm ˌɪntɚɹˈækʃənz, ðə klˈoʊsɪst tˌiːˈɛltˌiːˈɛl dˈɪstəns ɪz θɹˈiːhˈʌndɹɪd ˈeɪɾi θɹˈiː pˌiːˈɛm.
The distorted structure is believed to be caused by favourable thallium-thallium interactions, the closest Tl-Tl distance is 383 pm.