A Using The Information Provided Below Construct A Molecular Orbital Diagram For Nh4 Td Symmetry And Use This To 1 (58.64 KiB) Viewed 42 times
A Using The Information Provided Below Construct A Molecular Orbital Diagram For Nh4 Td Symmetry And Use This To 2 (75.33 KiB) Viewed 42 times
(a) Using the information provided below, construct a molecular orbital diagram for [NH4]* (Td symmetry) and use this to explain why the one electron reduction product, NH4, is unstable. Td E 8 C3 3 C₂ 60d 6 S4 1 1 1 1 1 (x² + y² + z²) = r² 1 -1 2 0 √3(x²-y²) (3z²-r²) -1 -1 -1 A₁ A₂ E T₁ T₂ 1 -1 1 2 3 0 30 -1 0 1 1 -1 (x,y,z) (xy,xz,yz) (8 marks)
(b) The IR spectrum of Fe(CO)5 shows two v(CO) stretching vibrations. Use group theory to show whether the molecule has D3h or C4v symmetry. D3h E 2C3 3C2 oh 253 30v 1 A₁' 1 1 1 1 1 x² + y², z² A₂' 1 1 -1 1 1 -1 E' 2 -1 -1 0 (x,y) (x²-y², 2xy) A₁" 1 1 -1 -1 1 1 A₂" Z E" (xz,yz) -1 10 20d 1 x² + y², z² -1 -1 x²-y² 1 -1 -1 1 xy 0 0 (x,y) (xz,yz) C4V A₁ A₂ B₁ B₂ E 1 2 E 1 1 1 1 2 0 1 -1 2 -1 -1 0 -2 2C4 C₂ 20v 1 1 1 1 1 -1 1 -1 0 1 -2 -1 Z (12 marks)
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