Table 2. Top: Bragg Peak and Rod Positions and the Corresponding Full Widths at Half-Maximum of Racemic and Enantiomeric N-C16-Serine (2 mN/m), N-C16-Serine-ME (dl: 15 mN/m and l: 17 mN/m), and N-C18-Threonine-ME (15 mN/m) Monolayers^a.

compound	Qxy (Å–1)	Qz (Å–1)	Qxy (Å–1)	Qz (Å–1)	Qxy (Å–1)	Qz (Å–1)
N-C16-dl-serine			1.152	1.16	1.400	0.58
			0.024	0.31	0.009	0.29
N-C16-l-serine	0.834	1.33	1.267	0.41	1.485	0.92
	0.044	0.30	0.009	0.30	0.020	0.30
N-C16-dl-serine-ME	1.099	1.109	1.323	0.41	1.490	0.68
	0.040	0.3	0.009	0.28	0.017	0.29
N-C16-l-serine-ME	1.108	1.12	1.325	0.42	1.504	0.70
	0.034	0.30	0.008	0.28	0.013	0.29
N-C18-dl-threonine-ME			0.981	1.16	1.364	0.58
			0.045	0.27	0.014	0.28
N-C18-l-threonine-ME	0.979	1.15	1.340	0.49	1.402	0.66
	0.042	0.28	0.013	0.27	0.017	0.28

compound	a, b, c (Å)	α, β, γ (deg)	d	t (deg)	Axy (Å2)	A0 (Å2)
N-C16-dl-serine	4.924	131.4	0.2412	45.2	26.9	18.9
	5.984	114.3
	5.984	114.3
N-C16-l-serine	4.964	145.9	0.5844	58.2	37.4	19.7
	7.542	121.5
	8.839	92.6
N-C16-dl-serine-ME	4.910	134.5	0.3389	44.8	28.1	19.9
	5.911	120.8
	6.657	104.7
N-C16-l-serine-ME	4.892	134.4	0.3416	45.4	27.7	19.5
	5.850	121.4
	6.640	104.2
N-C18-dl-threonine-ME	4.937	137.8	0.3835	49.8	31.6	20.4
	6.864	111.1
	6.864	111.1
N-C18-l-threonine-ME	4.916	138.2	0.3957	49.6	31.5	20.4
	6.729	114.3
	7.040	107.5

^aBottom: Corresponding lattice parameters of racemic and enantiomeric N-C16-serine, N-C16-serine-ME, and N-C18-threonine-ME monolayers. a, b, c, and α, β, γ are the lattice parameters of the unit cell; t is the polar tilt angle; A_xy is the molecular area; A₀ is the cross-sectional area of the alkyl chain; and d is the lattice distortion.