A homologous series of alkynyl chalcoether complexes: [W(η2-iPrECCPh)(CO)2(Tp*)]BF4 (E = O, S, Se, Te; Tp* = hydrotris(dimethylpyrazol-1-yl)borate)

• The first complete series of isostructural alkynyl chalcoether complexes.
• Convenient ‘one-pot’ synthesis of WI(CO)3(Tp*).
• Computational interrogation of alkynyl chalcoethers.