Hydrogen-bonded adducts between the title metal alcohol complex and several neutral bases, showing different degrees of H+ transfer, display distinctive νCO bands.
![Graphical abstract: Hydrogen-bonded adducts between neutral molecules and [Mo(η3-methallyl)(CO)2(HOC(py)3)]+: snapshots of a deprotonation](http://hg.y866.cn/compound/lib/scimg/usr/1/C0CE00688B.jpg)
