Logging

I'm trying to run this script with logging:
"c:\path\shadowGroupSync.ps1 -File c:\path\ShadowGroups.csv | tee -file ('c:\path\shadowGroupSync-'+ (Get-Date -format d.M.yyyy.HH.mm) + '.log')"

But it doesn't log I'm running this on Windows 2012 R2. Could I get some help on understanding why this isn't working? 
Thank you