hˈaɪdɹəkˌɑːɹbən sˈɑːlvənts sˈʌtʃ ɐz bˈɛnziːn fˈeɪvɚ fɔːɹmˈeɪʃən ʌvðə hˈɛkseɪmɚ, wˈɛɹæz iːθˈiəɹɪəl sˈɑːlvənts fˈeɪvɚ ðə tˈɛtɹeɪmɚ.
Hydrocarbon solvents such as benzene favour formation of the hexamer, whereas ethereal solvents favour the tetramer.