N,N'-Bis[(E)-2-Benzyl-idenepropylidene]ethane-1,2-diamine.

The two independent mol-ecules in the asymmetric unit of the title Schiff base, C(22)H(24)N(2), lie across centers of inversion. The C=N double bonds are in a trans configuration.

Related literature

There are many examples of similar Schiff bases in the current (2008) Cambrige Structural Database; for example, see: Khalaji et al. (2007 ▶). For the structure of bis­[(E)-3-phenyl­propen-1-al]-1,2-diimino­ethane, see: Khalaji & Weil (2007 ▶).

Experimental

Crystal data

C22H24N2

M = 316.43

Triclinic,

a = 9.524 (2) Å

b = 9.576 (2) Å

c = 10.202 (2) Å

α = 88.160 (3)°

β = 76.865 (2)°

γ = 78.651 (3)°

V = 888.3 (3) Å3

Z = 2

Mo Kα radiation

μ = 0.07 mm−1

T = 100 (2) K

0.24 × 0.12 × 0.08 mm

Data collection

Bruker SMART APEX diffractometer

Absorption correction: none

4114 measured reflections

3015 independent reflections

2186 reflections with I > 2σ(I)

R int = 0.023

Refinement

R[F 2 > 2σ(F 2)] = 0.069

wR(F 2) = 0.228

S = 1.13

3015 reflections

219 parameters

H-atom parameters constrained

Δρmax = 0.34 e Å−3

Δρmin = −0.30 e Å−3

Data collection: APEX2 (Bruker, 2007 ▶); cell refinement: SAINT (Bruker, 2007 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: X-SEED (Barbour, 2001 ▶); software used to prepare material for publication: publCIF (Westrip, 2008 ▶).

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536808025919/xu2448sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536808025919/xu2448Isup2.hkl

Additional supplementary materials: crystallographic information; 3D view; checkCIF report

C22H24N2	Z = 2
Mr = 316.43	F000 = 340
Triclinic, P1	Dx = 1.183 Mg m−3
Hall symbol: -P 1	Mo Kα radiation λ = 0.71073 Å
a = 9.524 (2) Å	Cell parameters from 1031 reflections
b = 9.576 (2) Å	θ = 3.2–28.0º
c = 10.202 (2) Å	µ = 0.07 mm−1
α = 88.160 (3)º	T = 100 (2) K
β = 76.865 (2)º	Block, colorless
γ = 78.651 (3)º	0.24 × 0.12 × 0.08 mm
V = 888.3 (3) Å3

Bruker SMART APEX diffractometer	2186 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	Rint = 0.023
Monochromator: graphite	θmax = 25.0º
T = 100(2) K	θmin = 2.1º
ω scans	h = −11→11
Absorption correction: None	k = −11→7
4114 measured reflections	l = −12→12
3015 independent reflections

Refinement on F2	Secondary atom site location: difference Fourier map
Least-squares matrix: full	Hydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.069	H-atom parameters constrained
wR(F2) = 0.228	w = 1/[σ2(Fo2) + (0.0966P)2 + 1.385P] where P = (Fo2 + 2Fc2)/3
S = 1.13	(Δ/σ)max = 0.001
3015 reflections	Δρmax = 0.34 e Å−3
219 parameters	Δρmin = −0.30 e Å−3
Primary atom site location: structure-invariant direct methods	Extinction correction: none

	x	y	z	Uiso*/Ueq
N1	0.3982 (3)	1.1256 (3)	0.1398 (3)	0.0221 (7)
N2	0.3642 (3)	0.5970 (3)	0.1443 (3)	0.0220 (7)
C1	0.1158 (4)	1.3426 (4)	0.6498 (4)	0.0242 (8)
H1	0.0674	1.3700	0.5785	0.029*
C2	0.0423 (4)	1.3777 (4)	0.7810 (4)	0.0268 (9)
H2	−0.0567	1.4279	0.7993	0.032*
C3	0.1114 (4)	1.3405 (4)	0.8862 (4)	0.0238 (8)
H3	0.0597	1.3646	0.9762	0.029*
C4	0.2550 (4)	1.2685 (4)	0.8602 (4)	0.0238 (8)
H4	0.3026	1.2428	0.9322	0.029*
C5	0.3297 (4)	1.2335 (4)	0.7291 (3)	0.0218 (8)
H5	0.4296	1.1860	0.7118	0.026*
C6	0.2613 (4)	1.2668 (4)	0.6210 (3)	0.0209 (8)
C7	0.3478 (4)	1.2169 (4)	0.4872 (3)	0.0211 (8)
H7	0.4501	1.1871	0.4819	0.025*
C8	0.3067 (4)	1.2062 (4)	0.3699 (3)	0.0198 (8)
C9	0.1543 (4)	1.2473 (5)	0.3469 (4)	0.0358 (10)
H9A	0.0849	1.2137	0.4217	0.054*
H9B	0.1502	1.2039	0.2625	0.054*
H9C	0.1279	1.3512	0.3415	0.054*
C10	0.4227 (4)	1.1443 (4)	0.2552 (3)	0.0209 (8)
H10	0.5204	1.1169	0.2671	0.025*
C11	0.5216 (4)	1.0601 (4)	0.0345 (3)	0.0224 (8)
H11A	0.6070	1.0211	0.0738	0.027*
H11B	0.5500	1.1325	−0.0326	0.027*
C12	0.1872 (4)	0.8841 (4)	0.6385 (4)	0.0234 (8)
H12	0.1826	0.9391	0.5599	0.028*
C13	0.1387 (4)	0.9502 (4)	0.7643 (4)	0.0235 (8)
H13	0.1002	1.0497	0.7709	0.028*
C14	0.1461 (4)	0.8727 (4)	0.8798 (4)	0.0252 (8)
H14	0.1117	0.9184	0.9656	0.030*
C15	0.2040 (4)	0.7277 (4)	0.8698 (4)	0.0238 (8)
H15	0.2112	0.6740	0.9488	0.029*
C16	0.2510 (4)	0.6617 (4)	0.7450 (4)	0.0224 (8)
H16	0.2901	0.5622	0.7394	0.027*
C17	0.2427 (3)	0.7372 (4)	0.6261 (3)	0.0188 (8)
C18	0.2977 (4)	0.6565 (4)	0.4993 (4)	0.0210 (8)
H18	0.3495	0.5626	0.5085	0.025*
C19	0.2885 (4)	0.6906 (4)	0.3718 (3)	0.0201 (8)
C20	0.2131 (4)	0.8296 (4)	0.3247 (4)	0.0260 (9)
H20A	0.1151	0.8581	0.3833	0.039*
H20B	0.2041	0.8184	0.2320	0.039*
H20C	0.2711	0.9028	0.3282	0.039*
C21	0.3610 (4)	0.5804 (4)	0.2695 (3)	0.0207 (8)
H21	0.4084	0.4915	0.2977	0.025*
C22	0.4398 (4)	0.4776 (4)	0.0556 (3)	0.0245 (8)
H22A	0.3687	0.4421	0.0145	0.029*
H22B	0.4845	0.3993	0.1079	0.029*

	U11	U22	U33	U12	U13	U23
N1	0.0217 (15)	0.0204 (16)	0.0237 (17)	−0.0038 (12)	−0.0043 (13)	−0.0017 (12)
N2	0.0225 (15)	0.0213 (16)	0.0224 (17)	−0.0058 (12)	−0.0041 (12)	0.0005 (12)
C1	0.0238 (18)	0.026 (2)	0.0222 (19)	−0.0025 (15)	−0.0076 (15)	0.0024 (15)
C2	0.0238 (19)	0.027 (2)	0.028 (2)	−0.0021 (16)	−0.0043 (16)	−0.0027 (16)
C3	0.0293 (19)	0.0191 (19)	0.0221 (19)	−0.0049 (15)	−0.0035 (15)	−0.0022 (15)
C4	0.030 (2)	0.0163 (18)	0.027 (2)	−0.0048 (15)	−0.0112 (16)	0.0010 (15)
C5	0.0228 (18)	0.0181 (18)	0.026 (2)	−0.0040 (15)	−0.0085 (15)	0.0012 (15)
C6	0.0238 (18)	0.0178 (18)	0.0226 (19)	−0.0077 (14)	−0.0054 (15)	0.0012 (14)
C7	0.0198 (17)	0.0186 (18)	0.0239 (19)	−0.0034 (14)	−0.0031 (15)	−0.0003 (15)
C8	0.0233 (18)	0.0190 (18)	0.0191 (18)	−0.0075 (15)	−0.0062 (15)	0.0033 (14)
C9	0.028 (2)	0.053 (3)	0.025 (2)	0.0003 (19)	−0.0093 (17)	−0.0110 (19)
C10	0.0200 (17)	0.0176 (18)	0.026 (2)	−0.0054 (14)	−0.0064 (15)	0.0046 (14)
C11	0.0220 (18)	0.026 (2)	0.0196 (18)	−0.0063 (15)	−0.0036 (15)	0.0001 (15)
C12	0.0253 (19)	0.023 (2)	0.026 (2)	−0.0094 (15)	−0.0108 (16)	0.0056 (15)
C13	0.0176 (17)	0.0210 (19)	0.031 (2)	−0.0011 (14)	−0.0054 (15)	−0.0033 (15)
C14	0.0189 (18)	0.030 (2)	0.0243 (19)	−0.0042 (15)	0.0006 (15)	−0.0064 (16)
C15	0.0227 (18)	0.030 (2)	0.0179 (18)	−0.0043 (16)	−0.0046 (15)	0.0036 (15)
C16	0.0208 (17)	0.0196 (19)	0.027 (2)	−0.0033 (15)	−0.0076 (15)	0.0042 (15)
C17	0.0143 (16)	0.0236 (19)	0.0185 (18)	−0.0059 (14)	−0.0021 (13)	0.0023 (14)
C18	0.0196 (17)	0.0153 (18)	0.028 (2)	−0.0020 (14)	−0.0057 (15)	0.0013 (14)
C19	0.0190 (17)	0.0210 (19)	0.0215 (19)	−0.0072 (14)	−0.0043 (14)	0.0018 (14)
C20	0.028 (2)	0.0214 (19)	0.025 (2)	0.0013 (16)	−0.0037 (16)	0.0007 (16)
C21	0.0236 (18)	0.0176 (18)	0.0222 (19)	−0.0061 (15)	−0.0059 (14)	0.0014 (14)
C22	0.031 (2)	0.0207 (19)	0.0220 (19)	−0.0058 (16)	−0.0067 (16)	−0.0025 (15)

N1—C10	1.276 (5)	C11—H11A	0.9900
N1—C11	1.452 (5)	C11—H11B	0.9900
N2—C21	1.276 (5)	C12—C13	1.389 (5)
N2—C22	1.446 (5)	C12—C17	1.401 (5)
C1—C2	1.380 (5)	C12—H12	0.9500
C1—C6	1.403 (5)	C13—C14	1.380 (5)
C1—H1	0.9500	C13—H13	0.9500
C2—C3	1.384 (5)	C14—C15	1.388 (5)
C2—H2	0.9500	C14—H14	0.9500
C3—C4	1.375 (5)	C15—C16	1.380 (5)
C3—H3	0.9500	C15—H15	0.9500
C4—C5	1.382 (5)	C16—C17	1.401 (5)
C4—H4	0.9500	C16—H16	0.9500
C5—C6	1.401 (5)	C17—C18	1.464 (5)
C5—H5	0.9500	C18—C19	1.349 (5)
C6—C7	1.465 (5)	C18—H18	0.9500
C7—C8	1.354 (5)	C19—C21	1.462 (5)
C7—H7	0.9500	C19—C20	1.502 (5)
C8—C10	1.463 (5)	C20—H20A	0.9800
C8—C9	1.497 (5)	C20—H20B	0.9800
C9—H9A	0.9800	C20—H20C	0.9800
C9—H9B	0.9800	C21—H21	0.9500
C9—H9C	0.9800	C22—C22ii	1.534 (7)
C10—H10	0.9500	C22—H22A	0.9900
C11—C11i	1.536 (7)	C22—H22B	0.9900
C10—N1—C11	117.7 (3)	H11A—C11—H11B	108.2
C21—N2—C22	117.0 (3)	C13—C12—C17	120.8 (3)
C2—C1—C6	120.5 (3)	C13—C12—H12	119.6
C2—C1—H1	119.8	C17—C12—H12	119.6
C6—C1—H1	119.8	C14—C13—C12	120.6 (3)
C1—C2—C3	120.7 (3)	C14—C13—H13	119.7
C1—C2—H2	119.7	C12—C13—H13	119.7
C3—C2—H2	119.7	C13—C14—C15	119.6 (3)
C4—C3—C2	119.9 (3)	C13—C14—H14	120.2
C4—C3—H3	120.0	C15—C14—H14	120.2
C2—C3—H3	120.0	C16—C15—C14	119.8 (3)
C3—C4—C5	119.8 (3)	C16—C15—H15	120.1
C3—C4—H4	120.1	C14—C15—H15	120.1
C5—C4—H4	120.1	C15—C16—C17	121.8 (3)
C4—C5—C6	121.4 (3)	C15—C16—H16	119.1
C4—C5—H5	119.3	C17—C16—H16	119.1
C6—C5—H5	119.3	C12—C17—C16	117.3 (3)
C5—C6—C1	117.6 (3)	C12—C17—C18	125.6 (3)
C5—C6—C7	116.9 (3)	C16—C17—C18	117.1 (3)
C1—C6—C7	125.5 (3)	C19—C18—C17	132.0 (3)
C8—C7—C6	131.0 (3)	C19—C18—H18	114.0
C8—C7—H7	114.5	C17—C18—H18	114.0
C6—C7—H7	114.5	C18—C19—C21	116.0 (3)
C7—C8—C10	116.5 (3)	C18—C19—C20	126.8 (3)
C7—C8—C9	126.6 (3)	C21—C19—C20	117.2 (3)
C10—C8—C9	116.9 (3)	C19—C20—H20A	109.5
C8—C9—H9A	109.5	C19—C20—H20B	109.5
C8—C9—H9B	109.5	H20A—C20—H20B	109.5
H9A—C9—H9B	109.5	C19—C20—H20C	109.5
C8—C9—H9C	109.5	H20A—C20—H20C	109.5
H9A—C9—H9C	109.5	H20B—C20—H20C	109.5
H9B—C9—H9C	109.5	N2—C21—C19	123.5 (3)
N1—C10—C8	122.7 (3)	N2—C21—H21	118.2
N1—C10—H10	118.6	C19—C21—H21	118.2
C8—C10—H10	118.6	N2—C22—C22ii	110.4 (4)
N1—C11—C11i	109.5 (3)	N2—C22—H22A	109.6
N1—C11—H11A	109.8	C22ii—C22—H22A	109.6
C11i—C11—H11A	109.8	N2—C22—H22B	109.6
N1—C11—H11B	109.8	C22ii—C22—H22B	109.6
C11i—C11—H11B	109.8	H22A—C22—H22B	108.1
C6—C1—C2—C3	0.9 (6)	C17—C12—C13—C14	0.8 (5)
C1—C2—C3—C4	0.4 (6)	C12—C13—C14—C15	0.7 (5)
C2—C3—C4—C5	0.0 (5)	C13—C14—C15—C16	−1.2 (5)
C3—C4—C5—C6	−1.6 (5)	C14—C15—C16—C17	0.2 (5)
C4—C5—C6—C1	2.8 (5)	C13—C12—C17—C16	−1.8 (5)
C4—C5—C6—C7	−176.2 (3)	C13—C12—C17—C18	−179.5 (3)
C2—C1—C6—C5	−2.4 (5)	C15—C16—C17—C12	1.3 (5)
C2—C1—C6—C7	176.5 (3)	C15—C16—C17—C18	179.2 (3)
C5—C6—C7—C8	165.1 (4)	C12—C17—C18—C19	−12.3 (6)
C1—C6—C7—C8	−13.8 (6)	C16—C17—C18—C19	169.9 (4)
C6—C7—C8—C10	−177.0 (3)	C17—C18—C19—C21	178.9 (3)
C6—C7—C8—C9	1.1 (6)	C17—C18—C19—C20	−0.6 (6)
C11—N1—C10—C8	−178.6 (3)	C22—N2—C21—C19	−179.8 (3)
C7—C8—C10—N1	178.6 (3)	C18—C19—C21—N2	−178.9 (3)
C9—C8—C10—N1	0.2 (5)	C20—C19—C21—N2	0.6 (5)
C10—N1—C11—C11i	131.7 (4)	C21—N2—C22—C22ii	−124.0 (4)