Relationships between structure and carbonyl streching frequencies of the .BETA.-lactam ring and the 7-acylamino group in 1-thia- and 1-oxa-cephem antibiotics. Importance of the bending angle of the C(4)-C(5) bond from plane C(6)-N(5)-C(8) in the .BETA.-lactam ring.

The file will be sent to you via the Telegram messenger. It may take up to 1-5 minutes before you receive it.

Note: Make sure you have linked your account to Z-Library Telegram bot.

The file will be sent to your Kindle account. It may take up to 1–5 minutes before you receive it.

Please note: you need to verify every book you want to send to your Kindle. Check your mailbox for the verification email from Amazon Kindle.