Vol. 25, No. 17 (2013)
Synthesis and Crystal Structure of 1,4-bis{[(2'-Thenylaminoformyl)phenoxyl]methyl}benzene 10005
To a solution of 2-thenylsalicylamide ( 2.33g, 10.5 mmol)
in dry acetone was added 1.52 g (11 mmol) dried K CO and
the mixture was stirred for 0.5 h at room temperature, then
.32 g (5 mmol) 1,4-bis-bromomethyl-benzene in 20 mL of
dry acetone was added dropwise in 0.5 h and the resulting
solution stirred and heated to reflux for 24 h. After cooling
down, inorganic salts were separated by filtration and the
solvent removed from the filtrate under reduced pressure. The
crude product was recrystallized with ethyl acetate to give a
white solid 2.43 g, Yield 86 %, m.p. 175-176 °C.
The title compound (0.057 g, 0. 1 mmol) was dissolved
in ethyl acetate (10 mL) and sealed for crystallization at room
temperature. After about 2 weeks colourless crystals suitable
for analysis were obtained.
X-Ray structure determination: The single crystal of
the title compound with the approximate dimensions of 0.15
mm × 0.10 mm × 0.08 mm was placed on a Bruker Smart 1 000
CCD area detector. The reflections were collected using a
2
3
1
TABLE-1
CRYSTAL DATA AND STRUCTURE
REFINEMENT FOR THE TITLE COMPOUND
graphite monochromated MoK
α
radition (λ = 0.71073 Å) at
2
96 (2) K. The structure was solved by using the program
Empirical formula
Formula weight
Temperature (K)
Wavelength (Å)
Crystal system
32 28 2 4 2
C H N O S
SHELXL-97 and Fourier difference techniques and refined
by the full-matrix least-squares method on F . All non-hydrogen
564.91
296(2)
0.71073
2
atoms were subjected to anisotropic refinement and all
hydrogen atoms were added in idealized positions and refined
isotropically. Crystal data and details of the refinement are
summarized in Table-1, representative bond lengths (Å) and
angles (°) are presented in Table-2. CCDC reference numbers
monoclinic
Space group
P 2 /c
1
Cell dimensions, (Å, deg)
a = 10.0826(17), b = 17.546(3),
c = 8.2262(14),
α = 90, β = 107.244(3), γ = 90
1389.9(4)
2
1.3498
0.218
9
50108.
3
Volume (Å )
Z
RESULTS AND DISCUSSION
X-ray crystallographic analysis revealed the crystal
3
Density (calculated) (mg/m )
Absorption coefficient (mm )
-
1
structure of the title compound. The structure is shown in
Fig. 1. It is worth noting that there are strong intramolecular
hydrogen bonding between the amide nitrogen atoms and the
etheric oxygen atoms with O2…N1 separations ca. 2.815 Å
and N1-H1…O2 angles averaging 134.3° which stabilized
the structure to form a trans configuration (Fig. 2). Further-
more, the title compound are linked by intermolecular
C9-H9…O1 hydrogen bonds into an infinite 1D chain parallel
to the bc plane, as illustrated in Fig. 3 and hydrogen bonds
data are summarized in Table-3.
F
(000)
593.1083
Index ranges
-13 ≤ h ≤ 7, -23 ≤ k ≤ 22,
-10 ≤ l ≤ 10
θ (°)
2.11-25.00
2425/1740
2425/1/250
0.0352
1.0726
R1 = 0.0405, wR = 0.0988
Reflections collected/unique
Data/restraints/parameters
Independent reflections (Rint
Goodness of fit indicator
Final R indices [I > 2σ(I)]
R indices (all data)
)
2
2
R1 = 0.0601, wR = 0.0988
TABLE-2
SELECTED BOND LENGTHS (Å) AND ANGLES (º) FOR THE TITLE COMPOUND
Bond
Lengths Bond Lengths Bond
1.365(2) C(11)-O(1) 1.228(2) C(6)-C(7)
1.439(2)
Lengths
1.382(3)
O(2)-C(5)
O(2)- C(4)
N(1)-C(11)
N(1)-C(12)
C(5)- C(10)
C(5)-C(6)
C(11)-C(10)
C(9)-C(10)
C(9)-C(8)
C(2)-C(4)
C(2)-C(1)
C(2)-C(3)
1.498(3)
1.395(3)
1.375(3)
1.498(3)
1.368(3)
1.365(3)
C(8)-C(7)
1.371(3)
1.490(3)
1.362(15)
1.685(4)
1.320(3)
1.647(5)
1.334(2)
1.447(3)
1.402(2)
1.384(3)
1.381(3)
1.493(17)
C(13)-C(12)
C(13)-C(14)
C(13)-S(1)
C(16)-C(15)
C(16)-S(1)
C(1)-C(3)
C(15)-C(14)
Bond
Angles
Bond
Angles
1
1
1
1
21.26(15)
20.64(18)
16.32(16)
23.09(17)
120.2(2)
119.6(2)
120.3(2)
128.6(7)
120.9(2)
110.4(7)
119.5(3)
104.6(6)
111.38(18)
105.40(16)
121.4(2)
121.0(2)
114.1(10)
91.3(2)
C(4)-O(2)-C(5)
C(12)-N(1)-C(11)
C(10)-C(5)-O(2)
C(6)-C(5)-O(2)
C(6)-C(5)-O(10)
O(1)-C(11)-N(1)
C(10)-C(11)-N(1)
C(10)-C(11)-O(1)
C(8)-C(9)-C(10)
C(11)-C(10)-C(5)
C(9)-C(10)-C(5)
C(9)-C(10)-C(11)
C(1)-C(2)-C(4)
C(3)-C(2)-C(4)
C(3)-C(2)-C(1)
C(7)-C(6)-C(5)
C(7)-C(8)-C(9)
C(8)-C(7)-C(6)
C(14)-C(13)-C(12)
S(1)-C(13)-C(12)
S(1)-C(13)-C(14)
S(1)-C(16)-C(15)
C(14)-C(15)-C(16)
C(13)-C(12)-N(1)
C(2)-C(4)-O(2)
C(3)-C(1)-C(2)
120.58(17)
120.60(19)
118.73(16)
120.66(17)
122.0(2)
126.28(16)
1
1
17.36(18)
16.35(17)
C(1)-C(3)-C(2)
C(15)-C(14)-C(13)
C(16)-S(1)-C(13)
1
1
20.5(2)
21.9(2)
117.57(19)