“…The structure of fac-{Re(CO) 3 } fragment in the three complexes (2, 6, 8) does not differ significantly and it is also similar to previously reported rhenium carbonyl complexes [21,32,33]. The C"C bond distance is also similar for the three complexes and resembles reported values for other P-coordinated phosphinoalkyne metal complexes [3,4,7,11,12].…”