HCR Manorcare Corporate Office Headquarters. HCR ManorCare, Inc. Address: 333 N. Summit St. Toledo, OH 43604-2617. Email: n/a. Corporate Phone Number: 1-419-252-5500. Fax Number: 1-419-252-5554. Customer Service Number: 1-419-252-5500.
In organic chemistry sigma bonds (Ï) are always the first bond between two atoms, resulting from overlap along the bonding axis (of hybrid orbitals), while pi bonds (Ï) are second and third bonds resulting from the overlap of p orbitals, above and below (or in front and back of) the bonding axis.
This kind of bond is called a pi bond. The pi bond results when p orbitals overlap one another in this side-to-side fashion. This diagram tries to represent all of the sigma and pi bonds in ethene (C2H4). This is perhaps the best way to represent that a double bond consists of a sigma bond and a pi bond.