ðə ɹˈuːm tˈɛmpɹɪtʃɚ fˈɔːɹm ʌv tˌiːˈɛl aɪ ɪz jˈɛloʊ ænd hɐz ɐn ˌɔːɹθoːɹhˈɑːmbɪk stɹˈʌktʃɚ wˌɪtʃ kæn biː kənsˈɪdɚd təbi ɐ dɪstˈɔːɹɾᵻd nˈɑː sˌiːˈɛl stɹˈʌktʃɚ.
The room temperature form of TlI is yellow and has an orthorhombic structure  which can be considered to be a distorted NaCl structure.