ɪnvˌɛstɪɡˈeɪʃənz jˈuːzɪŋ hˈaɪɹˌɛzəlˈuːʃən nˈuːtɹɑːn pˈaʊdɚ dᵻfɹˈækʃən mˈɛʒɚmənts fɹʌm ɹˈuːm tˈɛmpɹɪtʃɚ tə wˈʌn.fˈaɪv kˈɛlvɪn ʃˈoʊd ðˌɐɾɪt hɐz sˌuːpɚkəndˈʌktɪv pɹˈɑːpɚɾiz æɾ ɐbˌaʊt sˈɛvən.zˈiəɹoʊ θɹˈiː kˈɛlvɪn fɔːɹ ˈɛks ˈiːkwəlz bˌiːˈɑːɹ ænd æɾ ɐbˌaʊt wˈʌn.sˈɛvən kˈɛlvɪn fɔːɹ ˈɛks ˈiːkwəlz ˈaɪ, ɹᵻspˈɛktɪvli.
Investigations using high-resolution neutron powder diffraction measurements from room temperature to 1.5 Kelvin showed that it has superconductive properties at about 7.03 Kelvin for X=Br and at about 1.7 Kelvin for X=I, respectively.