As you may know all that ,Share point document library shouldn't hold any special characters. lets see what are the special characters are not allowed. This should really come as handy while naming the share point document libraries and lists.
- Tilde
- Number sign
- Percent
- Ampersand
- Asterisk
- Braces
- Backslash
- Colon
- Angle brackets
- Question mark
- Slash
- Pipe
- Quotation mark
Hope it helps!!
Happy Share Pointing :-)