Carbocations are species bearing a formal + charge on carbon. The have sp2 hybridization and trigonal planar geometry, with an empty p orbital on carbon, perpendicular to the plane containing the substituents (see diagrams shown to the right).
Aortic cross-clamp. An aortic cross-clamp is a surgical instrument used in cardiac surgery to clamp the aorta and separate the systemic circulation from the outflow of the heart. An aortic cross-clamping procedure serves, for example, in the repairing of coarctation of the aorta.
Cross Laminated Timber (CLT) is an engineered wood product used for pre-fabricated structural applications and is making the construction of entire buildings from timber a reality. 1  Overview. 2  Properties. 3  Description. 4  Applications.5  Case Studies.6  Suppliers.ross Laminated Timber (CLT) is an engineered wood product used for pre-fabricated structural applications and is making the construction of entire buildings from timber a reality. 1  Overview. 2  Properties. 3  Description. 4  Applications. 5  Case Studies. 6  Suppliers.