Question

What is the Lambda Isomer???​

Answer 1

ᴛʜᴇ ɪᴜᴘᴀᴄ ʀᴜʟᴇs sᴜɢɢᴇsᴛ ᴛʜᴀᴛ ғᴏʀ ɢᴇɴᴇʀᴀʟ ᴏᴄᴛᴀʜᴇᴅʀᴀʟ ᴄᴏᴍᴘʟᴇxᴇs ᴄ/ᴀ sᴄʜᴇᴍᴇ ɪs ᴄᴏɴᴠᴇɴɪᴇɴᴛ ᴛᴏ ᴜsᴇ ᴀɴᴅ ᴛʜᴀᴛ ғᴏʀ ʙɪs ᴀɴᴅ ᴛʀɪs ʙɪᴅᴇɴᴛᴀᴛᴇ ᴄᴏᴍᴘʟᴇxᴇs ᴛʜᴇ ᴀʙsᴏʟᴜᴛᴇ ᴄᴏɴғɪɢᴜʀᴀᴛɪᴏɴ ʙᴇ ᴅᴇsɪɢɴᴀᴛᴇᴅ ʟᴀᴍʙᴅᴀ λ (ʟᴇғᴛ-ʜᴀɴᴅᴇᴅ) ᴀɴᴅ ᴅᴇʟᴛᴀ δ (ʀɪɢʜᴛ-ʜᴀɴᴅᴇᴅ).

Answer 2

Optical Stereoisomers
If you shine light through pure solutions of each optical isomer they would rotate the plane of polarized light in opposite directions. The symbol Λ (lambda) is used as a prefix to describe the left-handed propeller twist formed by three bidentate ligands.