Table 1 Crystal data and structure refinement details for compounds 4a and 5a

Molecular formula

C₁₅H₁₈N₂O₃

C₁₆H₂₀N₂O₃

Formula weight

274.31

288.34

Crystal system

Orthorhombic

Triclinic

Space group

P2₁2₁2₁

P1

Unit cell dimensions

a = 10.0002 (2) Å

a = 5.1016 (2) Å, α = 83.188 (2)°

b = 11.7485 (2) Å

b = 8.8474 (3) Å, β = 81.358 (3)°

c = 11.9183 (2) Å

c = 16.9672 (5) Å, γ = 83.745 (3)°

Volume

1400.25 (4) ų

748.54 (4) ų

Z, Calculated density

1.301 g cm⁻³

1.279 g cm⁻³

F(000)

584

308

Crystal size

0.82 × 0.67 × 0.43 mm

0.43 × 0.25 × 0.23 mm

θ range for data collection

θ_max = 71.8°, θ_min = 5.3°

θ_max = 65.0°, θ_min = 2.7°

Limiting indices

−12 < =h < =12, −12 < =k < =14, −13 < =l < =14

−4 < =h < =5, −10 < =k < =10, −19 < =l < =19

Reflections collected/unique

9719/2682 [R_int = 0.021]

8120/ 2453 [R_int = 0.111]

Completeness

to theta 71.6 = 98.8%

to theta 65.0 = 96.8%

Absorption correction

multi-scan SADABS Bruker 2009

multi-scan SADABS Bruker 2009

Refinement method

Full-matrix least-squares on F²

Full-matrix least-squares on F²

Goodness-of-fit on F ²

1.03

1.64

CCDC number

943007

945756