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Complex Spherical Harmonics

The following table contains the normalized complex spherical harmonics of orders 0 to 4 (s to g).

l   ml   Yl,ml( θ,φ) Yl,ml(x,y,z)
           
0   0   √((1/2π)(1/2)) √(1/4π)
           
1   0   √((1/2π)(3/2))cos(θ) √(3/4π)(z/r)
    ±1   ±√((1/2π)(3/4))sin(θ)e±iφ ±√(3/8π)(x±iy)/r
           
2   0   √((1/2π)(5/8))(2cos2(θ) -sin2(θ)) √((5/4π)(1/4))(3z2-r2)/r2
    ±1   ±√((1/2π)(15/4))(cos(θ)sin(θ))e±iφ ±√((5/4π)(3/2))z(x±iy)/r2
    ±2   √((1/2π)(15/16))sin2(θ)e±i2φ √((5/4π)(3/8))(x±iy)2/r2
           
3   0   √((1/2π)(7/8))(2cos3(θ) -3cos(θ)sin2(θ)) √((7/4π)(1/4))z(5z2-3r2)/r3
    ±1   ±√((1/2π)(21/32))(4cos2(θ)sin(θ) -sin3(θ))e±iφ ±√((7/4π)(3/16))(x±iy)(5z2-r2)/r3
    ±2   √((1/2π)(105/16))(cos(θ)sin2(θ))e±i2φ √((7/4π)(15/8))z(x±iy)2/r3
    ±3   ±√((1/2π)(35/32))sin3(θ)e±i3φ ±√((7/4π)(5/16))(x±iy)3/r3
           
4   0   √((1/2π)(9/128))(35cos4(θ) -30cos2(θ) +3) √((9/4π)(1/64))(35z4-30z2r2+3r4)/r4
    ±1   ±√((1/2π)(45/32))sin(θ)(7cos3(θ) -3cos(θ))e±iφ ±√((9/4π)(5/16))(x±iy)(7z3-3zr2)/r4
    ±2   √((1/2π)(45/64))sin2(θ)(7cos2(θ) -1)e±i2φ √((9/4π)(5/32))(x±iy)2(7z2-r2)/r4
    ±3   ±√((1/2π)(315/32))sin3(θ)cos(θ)e±i3φ ±√((9/4π)(35/16))z(x±iy)3/r4
    ±4   √((1/2π)(315/256))sin4(θ)e±i4φ √((9/4π)(35/128))(x±iy)4/r4

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J. J. P. Stewart
Stewart Computational Chemistry, 2007