There is no any problem. Please always carefully check the prompt on screen. Multiwfn just asks you to input the path of input file.
Please follow tutorials in Chapter 4 of Multiwfn manual, all commands needed for wide variety of analyses are given very clearly.
Thank you very much, dear Professor Beijing
But I have a problem if you can help me solve it.
Where I downloaded the program from the home page, but I can not install it.
Where the image below appears, and I cannot complete the installation process.
MOF is a periodic system, usually you need to calculate IR for this kind of system via first-principle program, for example, CP2K. Multiwfn is able to plot IR spectrum based on output file of vibrational analysis task of CP2K.
please, how can i do the IR for metal organic framework in Gaussian 09?