Question

Create the group orbitals for a CH group, and then create the molecular orbitals of acetylene by combining two CH group, based on Qualitative MO Theory.

Answer 1

structure ethyne Canother The common name is aretylenedi a H- C= (-H - Cacetylene) This particle is is linear uneari every every one of one of the four atoms the four aton Ties in a straight line. The carbon - carbon triple bond To just 12 k long. In the hybrid orbital picture of Tacetylene the two carbons are sp-hybridized. In an lab-hybridized carbon, the_2 orbital ansalidates with Line ap orbital to form two sp half orbitals that are situated at an edge of 180 with respect to each other ceg. along with the a pivat). The aby and 262 orbitals. Yemain non-hybridized and are arranged opposijely along the y and - axis, respectively. Carbon 171] T O apy 262

(perpendicular to plane of the page) The (e sigma bond is formed by the overlap of one sp ozbital from every one of the carbons, while the two th sigma bonds are formed by the overlap of the second so orbital on every carbon uütt a l' orbital m. hydrogen Kvery sou hom of om still has two half- filled zby and ap2 osbitals, which are bebendicular sets of p orbitals structure two pi bonds between the carbons, resulting in a triple bond overall (one sigma band in addition to two bi Terasa o bonding 1 11 J overlap.