organic compounds\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 70| Part 9| September 2014| Pages o971-o972

Crystal structure of 5-amino-5′-chloro-6-(4-chloro­benzo­yl)-8-nitro-2,3-di­hydro-1H-spiro­[imidazo[1,2-a]pyridine-7,3′-indolin]-2′-one including an unknown solvent mol­ecule

aDepartment of Physics, The Madura College, Madurai 625 011, India, bDepartment of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India, and cDepartment of Food Science and Technology, University of Ruhuna, Mapalana, Kamburupitiya 81100, Sri Lanka
*Correspondence e-mail: plakshmannilantha@ymail.com

Edited by H. Stoeckli-Evans, University of Neuchâtel, Switzerland (Received 17 July 2014; accepted 30 July 2014; online 6 August 2014)

The asymmetric unit of the title compound, C21H15Cl2N5O4, contains two independent mol­ecules (A and B) having similar conformations. The amine (NH2) group forms an intra­molecular hydrogen bond with the benzoyl group, giving an S(6) ring motif in both mol­ecules. The central six-membered rings adopt sofa conformations and the imidazole rings are planar (r.m.s deviations = 0.0150 and 0.0166 Å). The pyridine and imidazole rings are inclined to one another by 3.54 (1) and 3.03 (1)° in mol­ecules A and B, respectively. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds, forming chains along the a axis which enclose R22(16) ring motifs. The rings are linked by weak N—H⋯O and C—H⋯O hydrogen bonds and C—H⋯π inter­actions forming sheets lying parallel to (001). A region of disordered electron density, most probably disordered solvent mol­ecules, occupying voids of ca 753 Å3 for an electron count of 260, was treated using the SQUEEZE routine in PLATON [Spek (2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]). Acta Cryst. D65, 148–155]. Their formula mass and unit-cell characteristics were not taken into account during refinement.

1. Related literature

For a similar structure, a pharmacologically active pyridine-related compound, see: Nagalakshmi et al. (2014[Nagalakshmi, R. A., Suresh, J., Sivakumar, S., Kumar, R. R. & Lakshman, P. L. N. (2014). Acta Cryst. E70, o604-o605.]).

[Scheme 1]

2. Experimental

2.1. Crystal data

  • C21H15Cl2N5O4

  • Mr = 472.28

  • Triclinic, [P \overline 1]

  • a = 12.9805 (7) Å

  • b = 13.2085 (8) Å

  • c = 16.7175 (10) Å

  • α = 105.713 (2)°

  • β = 103.367 (2)°

  • γ = 91.051 (2)°

  • V = 2674.4 (3) Å3

  • Z = 4

  • Mo Kα radiation

  • μ = 0.27 mm−1

  • T = 293 K

  • 0.21 × 0.19 × 0.18 mm

2.2. Data collection

  • Bruker Kappa APEXII diffractometer

  • Absorption correction: multi-scan (SADABS; Bruker, 2004[Bruker (2004). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]) Tmin = 0.967, Tmax = 0.974

  • 87748 measured reflections

  • 11499 independent reflections

  • 7063 reflections with I > 2σ(I)

  • Rint = 0.044

2.3. Refinement

  • R[F2 > 2σ(F2)] = 0.058

  • wR(F2) = 0.181

  • S = 1.11

  • 11499 reflections

  • 577 parameters

  • 2 restraints

  • H-atom parameters constrained

  • Δρmax = 0.38 e Å−3

  • Δρmin = −0.31 e Å−3

Table 1
Hydrogen-bond geometry (Å, °)

Cg1 and Cg2 are the centroids of rings C1A–C5A/N4A and C1B–C5B/N4B, respectively.

D—H⋯A D—H H⋯A DA D—H⋯A
N3B—H3B⋯O4A 0.86 1.91 2.774 (3) 179
N5A—H5A⋯O1A 0.86 2.06 2.592 (3) 119
N5B—H5B⋯O1B 0.86 2.08 2.604 (3) 119
N2A—H10⋯O4A 0.86 1.85 2.510 (3) 132
N2B—H12⋯O4B 0.86 1.86 2.515 (3) 132
N3A—H3A⋯O4Bi 0.86 1.96 2.823 (2) 177
N5A—H5A⋯O3Bii 0.86 2.42 3.131 (3) 140
N5B—H5B⋯O3Aiii 0.86 2.26 2.899 (3) 131
C7A—H5⋯O3Aii 0.97 2.58 3.302 (3) 132
C7A—H6⋯O1Biv 0.97 2.59 3.221 (3) 123
C7A—H5⋯Cg1ii 0.97 2.89 3.679 (3) 139
C7B—H8⋯Cg2v 0.97 2.85 3.747 (3) 155
Symmetry codes: (i) x+1, y, z; (ii) -x+1, -y, -z; (iii) -x+1, -y+1, -z; (iv) x, y-1, z; (v) -x, -y+1, -z.

Data collection: APEX2 (Bruker, 2004[Bruker (2004). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 2004[Bruker (2004). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: PLATON (Spek, 2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]); software used to prepare material for publication: SHELXL97.

Supporting information


Synthesis and crystallization top

A mixture of 4-chloro­benzoyl­aceto­nitrile (1.0 mmol), 5-chloro­isatin (1.0 mmol) and 2-(nitro­methyl­ene)imidazolidine were dissolved in 10 ml of EtOH and tri­ethyl­amine (1.0 mmol) was added and the reaction mixture was heated to reflux for 45 min. After completion of the reaction, as evident from TLC, the precipitate was filtered and dried to obtain pure pale brown solid. Colourless crystals of the title compound were obtaind by slow evaporation of a solution in di­methyl sulphoxide (yield 93 %; m.p. 534 K).

Refinement top

H atoms were placed in calculated positions and treated as riding atoms: N—H = 0.86 Å, C—H = 0.93 (aromatic CH), 0.96 (methyl CH3) and 0.97 Å (methyl­ene CH2) with Uiso(H) = 1.5Ueq(C-methyl) and = 1.2Ueq(N,C) for other H atoms. A region of disordered electron density, most probably disordered solvent molecules, occupying voids of ca. 753 Å3 for an electron count of 260, was treated using the SQUEEZE routine in PLATON [Spek (2009). Acta Cryst. D65, 148-155]. Their formula mass and unit-cell characteristics were not taken into account during refinement.

Related literature top

For a similar structure, a pharmacologically active pyridine-related compound, see: Nagalakshmi et al. (2014).

Computing details top

Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).

Figures top
[Figure 1] Fig. 1. The molecular structure of molecule A of the title compound, with atom labelling. Displacement ellipsoids are drawn at the 20% probability level. H-atoms have been omitted for clarity.
[Figure 2] Fig. 2. The molecular structure of molecule B of the title compound, with atom labelling. Displacement ellipsoids are drawn at the 20% probability level. H-atoms have been omitted for clarity.
[Figure 3] Fig. 3. A view along the a axis of the crystal packing of the title compound. Dashed bonds represent N-H···O hydrogen bonds (see Table 1 for details; C bound H atoms have been omitted for clarity).
5-Amino-5'-chloro-6-(4-chlorobenzoyl)-8-nitro-2,3-dihydro-1H-spiro[imidazo[1,2-a]pyridine-7,3'-indolin]-2'-one top
Crystal data top
C21H15Cl2N5O4Z = 4
Mr = 472.28F(000) = 968
Triclinic, P1Dx = 1.173 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 12.9805 (7) ÅCell parameters from 2000 reflections
b = 13.2085 (8) Åθ = 2–31°
c = 16.7175 (10) ŵ = 0.27 mm1
α = 105.713 (2)°T = 293 K
β = 103.367 (2)°Block, colourless
γ = 91.051 (2)°0.21 × 0.19 × 0.18 mm
V = 2674.4 (3) Å3
Data collection top
Bruker Kappa APEXII
diffractometer
11499 independent reflections
Radiation source: fine-focus sealed tube7063 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.044
Detector resolution: 0 pixels mm-1θmax = 26.9°, θmin = 1.6°
ω and ϕ scansh = 1616
Absorption correction: multi-scan
(SADABS; Bruker, 2004)
k = 1616
Tmin = 0.967, Tmax = 0.974l = 2121
87748 measured reflections
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.058Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.181H-atom parameters constrained
S = 1.11 w = 1/[σ2(Fo2) + (0.0894P)2 + 0.2555P]
where P = (Fo2 + 2Fc2)/3
11499 reflections(Δ/σ)max < 0.001
577 parametersΔρmax = 0.38 e Å3
2 restraintsΔρmin = 0.31 e Å3
Crystal data top
C21H15Cl2N5O4γ = 91.051 (2)°
Mr = 472.28V = 2674.4 (3) Å3
Triclinic, P1Z = 4
a = 12.9805 (7) ÅMo Kα radiation
b = 13.2085 (8) ŵ = 0.27 mm1
c = 16.7175 (10) ÅT = 293 K
α = 105.713 (2)°0.21 × 0.19 × 0.18 mm
β = 103.367 (2)°
Data collection top
Bruker Kappa APEXII
diffractometer
11499 independent reflections
Absorption correction: multi-scan
(SADABS; Bruker, 2004)
7063 reflections with I > 2σ(I)
Tmin = 0.967, Tmax = 0.974Rint = 0.044
87748 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0582 restraints
wR(F2) = 0.181H-atom parameters constrained
S = 1.11Δρmax = 0.38 e Å3
11499 reflectionsΔρmin = 0.31 e Å3
577 parameters
Special details top

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
C1A0.73023 (17)0.01119 (19)0.11139 (15)0.0368 (5)
C1B0.25621 (18)0.57859 (18)0.12320 (15)0.0374 (5)
C2A0.72616 (16)0.11182 (17)0.17862 (14)0.0316 (5)
C2B0.24268 (17)0.51805 (17)0.18571 (15)0.0346 (5)
C3A0.61102 (16)0.13082 (17)0.18449 (15)0.0338 (5)
C3B0.12348 (17)0.50010 (17)0.18260 (14)0.0331 (5)
C4A0.53098 (17)0.04635 (18)0.14696 (16)0.0369 (5)
C4B0.04671 (18)0.55272 (17)0.13823 (15)0.0351 (5)
C5A0.64378 (18)0.06481 (18)0.07503 (15)0.0374 (5)
C5B0.17571 (19)0.62288 (18)0.07933 (15)0.0376 (5)
C6A0.5327 (2)0.2160 (2)0.0028 (2)0.0587 (7)
H10.53850.27830.02320.070*
H20.49970.23710.05820.070*
C6B0.0723 (2)0.7147 (2)0.00442 (19)0.0544 (7)
H30.04820.68750.06630.065*
H40.07460.79110.01150.065*
C7A0.4711 (2)0.1373 (2)0.05076 (18)0.0514 (7)
H50.41090.11950.01190.062*
H60.44560.16400.09200.062*
C7B0.0004 (2)0.6690 (2)0.03965 (17)0.0464 (6)
H70.02750.72440.07810.056*
H80.05820.62290.00180.056*
C8A0.78204 (18)0.20686 (19)0.15986 (16)0.0387 (6)
C8B0.2955 (2)0.4118 (2)0.16477 (18)0.0431 (6)
C9A0.87762 (17)0.19669 (18)0.28932 (15)0.0346 (5)
C9B0.38129 (18)0.5008 (2)0.30110 (17)0.0419 (6)
C10A0.79719 (16)0.11549 (17)0.26521 (14)0.0313 (5)
C10B0.30771 (17)0.56908 (18)0.27676 (15)0.0352 (5)
C11A0.78829 (18)0.05466 (18)0.31873 (15)0.0366 (5)
H11A0.73470.00030.30300.044*
C11B0.29907 (19)0.66252 (19)0.33363 (16)0.0410 (6)
H11B0.25030.70860.31790.049*
C12A0.8622 (2)0.0776 (2)0.39682 (16)0.0450 (6)
C12B0.3646 (2)0.6868 (2)0.41515 (17)0.0515 (6)
C13A0.9416 (2)0.1583 (2)0.42154 (18)0.0540 (7)
H13A0.98850.17320.47530.065*
C13B0.4378 (2)0.6207 (3)0.44003 (19)0.0598 (7)
H13B0.48050.63920.49570.072*
C14A0.9517 (2)0.2178 (2)0.36629 (17)0.0480 (6)
H14A1.00700.27030.38110.058*
C14B0.4481 (2)0.5263 (2)0.3822 (2)0.0570 (7)
H14B0.49850.48150.39770.068*
C31A0.58488 (19)0.2271 (2)0.23432 (18)0.0440 (6)
C31B0.08794 (18)0.43654 (18)0.22841 (15)0.0378 (5)
C32A0.6616 (2)0.32226 (19)0.27750 (18)0.0447 (6)
C32B0.15700 (18)0.36977 (19)0.27329 (16)0.0384 (6)
C33A0.7186 (2)0.3388 (2)0.36101 (19)0.0568 (7)
H33A0.71200.28920.39020.068*
C33B0.2000 (2)0.4052 (2)0.36081 (17)0.0512 (7)
H33B0.19200.47370.39100.061*
C34A0.7868 (3)0.4317 (3)0.4018 (2)0.0725 (9)
H34A0.82460.44410.45860.087*
C34B0.2551 (2)0.3383 (3)0.4037 (2)0.0655 (8)
H34B0.28490.36220.46250.079*
C35A0.7976 (3)0.5016 (2)0.3598 (2)0.0720 (9)
C35B0.2651 (3)0.2381 (3)0.3594 (2)0.0705 (9)
C36A0.7365 (3)0.4889 (2)0.2770 (2)0.0674 (9)
H36A0.74090.54070.24930.081*
C36B0.2220 (2)0.2015 (2)0.2736 (2)0.0613 (8)
H36B0.22960.13260.24410.074*
C37A0.6699 (2)0.3989 (2)0.2368 (2)0.0553 (7)
H37A0.62950.38930.18120.066*
C37B0.1672 (2)0.2668 (2)0.23076 (18)0.0522 (7)
H37B0.13660.24130.17230.063*
N1A0.82389 (17)0.01200 (18)0.09059 (15)0.0521 (6)
N1B0.35638 (17)0.59169 (17)0.11129 (14)0.0462 (5)
N2A0.43450 (16)0.05275 (18)0.15897 (17)0.0598 (7)
H90.38720.00040.13390.072*
H100.41860.10930.19190.072*
N2B0.05243 (15)0.55052 (17)0.14117 (14)0.0487 (5)
H110.09620.58340.11230.058*
H120.07430.51620.17200.058*
N3A0.86499 (15)0.24959 (15)0.22690 (13)0.0396 (5)
H3A0.90560.30370.23060.047*
N3B0.37179 (15)0.41016 (16)0.23522 (15)0.0455 (5)
H3B0.40990.35810.23820.055*
N4A0.54899 (14)0.04556 (15)0.09405 (13)0.0380 (5)
N4B0.07354 (15)0.60967 (15)0.08717 (13)0.0389 (5)
N5A0.63672 (17)0.15890 (16)0.02111 (14)0.0494 (5)
H5A0.68770.18420.00100.059*
N5B0.17403 (17)0.68062 (16)0.02601 (13)0.0470 (5)
H5B0.22970.69650.01080.056*
O1A0.83315 (16)0.09805 (16)0.03680 (14)0.0713 (6)
O1B0.37291 (15)0.64175 (16)0.06023 (14)0.0649 (6)
O2A0.90296 (14)0.05404 (16)0.12491 (13)0.0658 (6)
O2B0.43195 (15)0.55275 (17)0.15150 (14)0.0625 (5)
O3A0.75237 (14)0.23385 (15)0.09537 (11)0.0525 (5)
O3B0.27203 (16)0.34371 (14)0.09631 (13)0.0573 (5)
O4A0.49204 (14)0.24063 (15)0.24575 (16)0.0674 (6)
O4B0.00657 (13)0.42797 (14)0.23356 (12)0.0522 (5)
Cl10.85274 (7)0.00066 (7)0.46504 (5)0.0701 (2)
Cl20.88459 (12)0.61410 (9)0.40925 (9)0.1355 (5)
Cl30.35428 (8)0.80620 (7)0.48853 (5)0.0795 (3)
Cl40.33373 (11)0.15562 (10)0.41399 (9)0.1317 (5)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
C1A0.0333 (12)0.0421 (14)0.0393 (13)0.0009 (10)0.0141 (10)0.0147 (11)
C1B0.0401 (13)0.0322 (12)0.0439 (14)0.0005 (10)0.0169 (11)0.0121 (11)
C2A0.0291 (11)0.0337 (12)0.0363 (12)0.0016 (9)0.0094 (9)0.0161 (10)
C2B0.0329 (12)0.0300 (12)0.0437 (13)0.0007 (9)0.0127 (10)0.0126 (10)
C3A0.0276 (11)0.0340 (12)0.0452 (14)0.0001 (9)0.0082 (10)0.0211 (11)
C3B0.0331 (11)0.0306 (12)0.0387 (13)0.0021 (9)0.0119 (10)0.0121 (10)
C4A0.0266 (11)0.0384 (13)0.0527 (15)0.0051 (10)0.0086 (10)0.0250 (12)
C4B0.0377 (12)0.0266 (11)0.0428 (13)0.0002 (9)0.0147 (10)0.0092 (10)
C5A0.0448 (14)0.0368 (13)0.0352 (13)0.0020 (10)0.0086 (11)0.0190 (11)
C5B0.0462 (14)0.0284 (12)0.0378 (13)0.0081 (10)0.0140 (11)0.0062 (10)
C6A0.0625 (18)0.0456 (16)0.0588 (18)0.0109 (14)0.0047 (14)0.0091 (14)
C6B0.0631 (18)0.0467 (16)0.0551 (17)0.0054 (13)0.0046 (14)0.0262 (14)
C7A0.0420 (14)0.0478 (16)0.0583 (17)0.0159 (12)0.0021 (12)0.0185 (13)
C7B0.0533 (15)0.0392 (14)0.0484 (15)0.0080 (12)0.0071 (12)0.0195 (12)
C8A0.0370 (13)0.0404 (13)0.0458 (15)0.0007 (10)0.0135 (11)0.0210 (12)
C8B0.0468 (14)0.0382 (14)0.0528 (16)0.0038 (11)0.0258 (13)0.0153 (13)
C9A0.0287 (11)0.0335 (12)0.0433 (14)0.0022 (9)0.0117 (10)0.0111 (10)
C9B0.0337 (12)0.0458 (15)0.0560 (16)0.0050 (11)0.0159 (12)0.0264 (13)
C10A0.0272 (11)0.0329 (12)0.0373 (12)0.0051 (9)0.0106 (9)0.0135 (10)
C10B0.0304 (11)0.0336 (12)0.0472 (14)0.0001 (9)0.0122 (10)0.0185 (11)
C11A0.0354 (12)0.0375 (13)0.0398 (13)0.0017 (10)0.0122 (10)0.0133 (11)
C11B0.0403 (13)0.0382 (14)0.0480 (15)0.0041 (11)0.0134 (12)0.0158 (12)
C12A0.0464 (14)0.0518 (16)0.0438 (15)0.0127 (12)0.0123 (12)0.0234 (12)
C12B0.0568 (16)0.0493 (13)0.0458 (16)0.0084 (13)0.0116 (13)0.0109 (10)
C13A0.0505 (16)0.0576 (17)0.0457 (16)0.0044 (13)0.0027 (13)0.0135 (14)
C13B0.0502 (16)0.0732 (17)0.0550 (18)0.0099 (15)0.0002 (13)0.0286 (13)
C14A0.0411 (14)0.0469 (15)0.0494 (16)0.0024 (12)0.0022 (12)0.0108 (13)
C14B0.0417 (14)0.0625 (15)0.076 (2)0.0026 (13)0.0063 (14)0.0413 (13)
C31A0.0343 (13)0.0439 (15)0.0621 (17)0.0059 (11)0.0152 (12)0.0258 (13)
C31B0.0384 (13)0.0347 (13)0.0426 (14)0.0016 (10)0.0127 (11)0.0125 (11)
C32A0.0450 (14)0.0359 (14)0.0596 (17)0.0096 (11)0.0250 (13)0.0134 (12)
C32B0.0352 (12)0.0405 (14)0.0468 (15)0.0007 (10)0.0130 (11)0.0222 (12)
C33A0.0646 (18)0.0522 (17)0.0576 (19)0.0059 (14)0.0272 (15)0.0118 (14)
C33B0.0536 (16)0.0526 (17)0.0474 (16)0.0011 (13)0.0112 (13)0.0157 (13)
C34A0.086 (2)0.068 (2)0.0472 (18)0.0129 (18)0.0137 (16)0.0079 (16)
C34B0.0640 (19)0.071 (2)0.0616 (19)0.0087 (16)0.0005 (15)0.0338 (17)
C35A0.081 (2)0.0463 (18)0.081 (2)0.0130 (16)0.033 (2)0.0047 (17)
C35B0.065 (2)0.066 (2)0.085 (3)0.0012 (16)0.0011 (18)0.046 (2)
C36A0.081 (2)0.0403 (16)0.083 (2)0.0071 (15)0.0272 (19)0.0157 (16)
C36B0.0632 (18)0.0380 (15)0.085 (2)0.0083 (14)0.0178 (17)0.0209 (16)
C37A0.0612 (17)0.0410 (15)0.0678 (19)0.0065 (13)0.0170 (15)0.0209 (14)
C37B0.0610 (17)0.0420 (15)0.0532 (17)0.0061 (13)0.0111 (13)0.0164 (13)
N1A0.0467 (13)0.0525 (14)0.0562 (14)0.0067 (11)0.0252 (11)0.0036 (12)
N1B0.0464 (12)0.0459 (12)0.0585 (14)0.0024 (10)0.0261 (11)0.0238 (11)
N2A0.0328 (11)0.0460 (13)0.102 (2)0.0006 (10)0.0170 (12)0.0228 (13)
N2B0.0347 (11)0.0559 (14)0.0679 (15)0.0057 (10)0.0138 (10)0.0365 (12)
N3A0.0358 (11)0.0369 (11)0.0478 (12)0.0079 (9)0.0113 (9)0.0148 (9)
N3B0.0367 (11)0.0390 (12)0.0701 (15)0.0128 (9)0.0203 (11)0.0242 (11)
N4A0.0333 (10)0.0332 (11)0.0465 (12)0.0054 (8)0.0038 (9)0.0150 (9)
N4B0.0395 (11)0.0374 (11)0.0458 (12)0.0034 (9)0.0114 (9)0.0207 (9)
N5A0.0550 (13)0.0415 (13)0.0496 (13)0.0063 (10)0.0164 (11)0.0072 (11)
N5B0.0540 (13)0.0450 (12)0.0484 (13)0.0026 (10)0.0123 (10)0.0245 (10)
O1A0.0693 (13)0.0580 (13)0.0798 (15)0.0087 (10)0.0425 (12)0.0111 (11)
O1B0.0609 (12)0.0743 (14)0.0861 (15)0.0016 (10)0.0382 (11)0.0497 (12)
O2A0.0440 (11)0.0638 (13)0.0797 (15)0.0131 (10)0.0311 (10)0.0082 (11)
O2B0.0429 (10)0.0775 (14)0.0871 (15)0.0110 (10)0.0309 (10)0.0434 (12)
O3A0.0560 (11)0.0606 (12)0.0487 (11)0.0107 (9)0.0099 (9)0.0320 (10)
O3B0.0764 (13)0.0379 (10)0.0635 (13)0.0091 (9)0.0317 (11)0.0116 (10)
O4A0.0416 (10)0.0435 (11)0.1263 (19)0.0142 (8)0.0356 (12)0.0259 (12)
O4B0.0394 (10)0.0571 (11)0.0744 (13)0.0009 (8)0.0194 (9)0.0379 (10)
Cl10.0825 (5)0.0836 (6)0.0548 (5)0.0085 (4)0.0105 (4)0.0422 (4)
Cl20.1648 (12)0.0872 (8)0.1189 (10)0.0690 (8)0.0301 (8)0.0201 (7)
Cl30.1047 (7)0.0664 (5)0.0559 (5)0.0044 (5)0.0201 (4)0.0011 (4)
Cl40.1366 (10)0.1045 (9)0.1475 (11)0.0217 (7)0.0301 (8)0.0787 (8)
Geometric parameters (Å, º) top
C1A—N1A1.358 (3)C11A—H11A0.9300
C1A—C5A1.396 (3)C11B—C12B1.379 (4)
C1A—C2A1.501 (3)C11B—H11B0.9300
C1B—C5B1.368 (3)C12A—C13A1.376 (4)
C1B—N1B1.375 (3)C12A—Cl11.743 (3)
C1B—C2B1.515 (3)C12B—C13B1.372 (4)
C2A—C10A1.514 (3)C12B—Cl31.745 (3)
C2A—C3A1.541 (3)C13A—C14A1.390 (4)
C2A—C8A1.577 (3)C13A—H13A0.9300
C2B—C10B1.521 (3)C13B—C14B1.385 (4)
C2B—C3B1.548 (3)C13B—H13B0.9300
C2B—C8B1.563 (3)C14A—H14A0.9300
C3A—C4A1.412 (3)C14B—H14B0.9300
C3A—C31A1.414 (3)C31A—O4A1.271 (3)
C3B—C4B1.410 (3)C31A—C32A1.491 (4)
C3B—C31B1.415 (3)C31B—O4B1.255 (3)
C4A—N2A1.314 (3)C31B—C32B1.490 (3)
C4A—N4A1.355 (3)C32A—C33A1.376 (4)
C4B—N2B1.299 (3)C32A—C37A1.379 (4)
C4B—N4B1.375 (3)C32B—C37B1.378 (4)
C5A—N5A1.310 (3)C32B—C33B1.383 (3)
C5A—N4A1.352 (3)C33A—C34A1.408 (4)
C5B—N5B1.318 (3)C33A—H33A0.9300
C5B—N4B1.375 (3)C33B—C34B1.391 (4)
C6A—N5A1.460 (3)C33B—H33B0.9300
C6A—C7A1.497 (4)C34A—C35A1.326 (5)
C6A—H10.9700C34A—H34A0.9300
C6A—H20.9700C34B—C35B1.355 (5)
C6B—N5B1.428 (3)C34B—H34B0.9300
C6B—C7B1.522 (4)C35A—C36A1.392 (5)
C6B—H30.9700C35A—Cl21.734 (3)
C6B—H40.9700C35B—C36B1.359 (4)
C7A—N4A1.469 (3)C35B—Cl41.736 (3)
C7A—H50.9700C36A—C37A1.369 (4)
C7A—H60.9700C36A—H36A0.9300
C7B—N4B1.470 (3)C36B—C37B1.373 (4)
C7B—H70.9700C36B—H36B0.9300
C7B—H80.9700C37A—H37A0.9300
C8A—O3A1.208 (3)C37B—H37B0.9300
C8A—N3A1.346 (3)N1A—O2A1.252 (3)
C8B—O3B1.218 (3)N1A—O1A1.271 (3)
C8B—N3B1.358 (3)N1B—O2B1.257 (3)
C9A—C14A1.372 (3)N1B—O1B1.264 (3)
C9A—N3A1.387 (3)N2A—H90.8600
C9A—C10A1.390 (3)N2A—H100.8600
C9B—N3B1.371 (3)N2B—H110.8600
C9B—C14B1.380 (4)N2B—H120.8600
C9B—C10B1.394 (3)N3A—H3A0.8600
C10A—C11A1.376 (3)N3B—H3B0.8600
C10B—C11B1.363 (3)N5A—H5A0.8600
C11A—C12A1.383 (3)N5B—H5B0.8600
N1A—C1A—C5A118.1 (2)C13B—C12B—C11B122.2 (3)
N1A—C1A—C2A119.2 (2)C13B—C12B—Cl3119.2 (2)
C5A—C1A—C2A122.4 (2)C11B—C12B—Cl3118.6 (2)
C5B—C1B—N1B118.0 (2)C12A—C13A—C14A120.1 (2)
C5B—C1B—C2B124.2 (2)C12A—C13A—H13A119.9
N1B—C1B—C2B117.7 (2)C14A—C13A—H13A119.9
C1A—C2A—C10A112.31 (18)C12B—C13B—C14B120.0 (3)
C1A—C2A—C3A111.22 (18)C12B—C13B—H13B120.0
C10A—C2A—C3A111.30 (17)C14B—C13B—H13B120.0
C1A—C2A—C8A109.75 (17)C9A—C14A—C13A118.0 (2)
C10A—C2A—C8A99.90 (17)C9A—C14A—H14A121.0
C3A—C2A—C8A111.88 (18)C13A—C14A—H14A121.0
C1B—C2B—C10B113.39 (18)C9B—C14B—C13B118.0 (3)
C1B—C2B—C3B110.24 (18)C9B—C14B—H14B121.0
C10B—C2B—C3B111.44 (18)C13B—C14B—H14B121.0
C1B—C2B—C8B109.31 (18)O4A—C31A—C3A122.5 (2)
C10B—C2B—C8B100.11 (19)O4A—C31A—C32A113.5 (2)
C3B—C2B—C8B112.00 (18)C3A—C31A—C32A124.0 (2)
C4A—C3A—C31A118.5 (2)O4B—C31B—C3B123.4 (2)
C4A—C3A—C2A119.3 (2)O4B—C31B—C32B112.48 (19)
C31A—C3A—C2A121.84 (19)C3B—C31B—C32B124.1 (2)
C4B—C3B—C31B117.4 (2)C33A—C32A—C37A119.1 (3)
C4B—C3B—C2B120.74 (19)C33A—C32A—C31A120.3 (2)
C31B—C3B—C2B121.8 (2)C37A—C32A—C31A120.4 (3)
N2A—C4A—N4A116.1 (2)C37B—C32B—C33B118.6 (2)
N2A—C4A—C3A122.5 (2)C37B—C32B—C31B120.4 (2)
N4A—C4A—C3A121.37 (19)C33B—C32B—C31B120.3 (2)
N2B—C4B—N4B115.5 (2)C32A—C33A—C34A119.3 (3)
N2B—C4B—C3B123.7 (2)C32A—C33A—H33A120.3
N4B—C4B—C3B120.8 (2)C34A—C33A—H33A120.3
N5A—C5A—N4A109.7 (2)C32B—C33B—C34B120.1 (3)
N5A—C5A—C1A130.0 (2)C32B—C33B—H33B120.0
N4A—C5A—C1A120.3 (2)C34B—C33B—H33B120.0
N5B—C5B—C1B132.2 (2)C35A—C34A—C33A120.4 (3)
N5B—C5B—N4B107.5 (2)C35A—C34A—H34A119.8
C1B—C5B—N4B120.3 (2)C33A—C34A—H34A119.8
N5A—C6A—C7A103.5 (2)C35B—C34B—C33B119.5 (3)
N5A—C6A—H1111.1C35B—C34B—H34B120.2
C7A—C6A—H1111.1C33B—C34B—H34B120.2
N5A—C6A—H2111.1C34A—C35A—C36A121.1 (3)
C7A—C6A—H2111.1C34A—C35A—Cl2120.3 (3)
H1—C6A—H2109.0C36A—C35A—Cl2118.6 (3)
N5B—C6B—C7B103.9 (2)C34B—C35B—C36B121.2 (3)
N5B—C6B—H3111.0C34B—C35B—Cl4118.9 (3)
C7B—C6B—H3111.0C36B—C35B—Cl4119.8 (3)
N5B—C6B—H4111.0C37A—C36A—C35A118.8 (3)
C7B—C6B—H4111.0C37A—C36A—H36A120.6
H3—C6B—H4109.0C35A—C36A—H36A120.6
N4A—C7A—C6A103.4 (2)C35B—C36B—C37B119.7 (3)
N4A—C7A—H5111.1C35B—C36B—H36B120.2
C6A—C7A—H5111.1C37B—C36B—H36B120.2
N4A—C7A—H6111.1C36A—C37A—C32A121.2 (3)
C6A—C7A—H6111.1C36A—C37A—H37A119.4
H5—C7A—H6109.1C32A—C37A—H37A119.4
N4B—C7B—C6B102.0 (2)C36B—C37B—C32B120.9 (3)
N4B—C7B—H7111.4C36B—C37B—H37B119.6
C6B—C7B—H7111.4C32B—C37B—H37B119.6
N4B—C7B—H8111.4O2A—N1A—O1A119.3 (2)
C6B—C7B—H8111.4O2A—N1A—C1A118.8 (2)
H7—C7B—H8109.2O1A—N1A—C1A122.0 (2)
O3A—C8A—N3A128.0 (2)O2B—N1B—O1B119.92 (19)
O3A—C8A—C2A123.8 (2)O2B—N1B—C1B119.3 (2)
N3A—C8A—C2A108.21 (19)O1B—N1B—C1B120.8 (2)
O3B—C8B—N3B126.7 (2)C4A—N2A—H9120.0
O3B—C8B—C2B125.1 (2)C4A—N2A—H10120.0
N3B—C8B—C2B108.2 (2)H9—N2A—H10120.0
C14A—C9A—N3A129.1 (2)C4B—N2B—H11120.0
C14A—C9A—C10A121.4 (2)C4B—N2B—H12120.0
N3A—C9A—C10A109.4 (2)H11—N2B—H12120.0
N3B—C9B—C14B128.8 (2)C8A—N3A—C9A112.49 (18)
N3B—C9B—C10B109.9 (2)C8A—N3A—H3A123.8
C14B—C9B—C10B121.2 (3)C9A—N3A—H3A123.8
C11A—C10A—C9A120.9 (2)C8B—N3B—C9B112.4 (2)
C11A—C10A—C2A129.1 (2)C8B—N3B—H3B123.8
C9A—C10A—C2A109.95 (18)C9B—N3B—H3B123.8
C11B—C10B—C9B120.4 (2)C5A—N4A—C4A123.45 (19)
C11B—C10B—C2B130.2 (2)C5A—N4A—C7A110.8 (2)
C9B—C10B—C2B109.3 (2)C4A—N4A—C7A125.7 (2)
C10A—C11A—C12A117.4 (2)C5B—N4B—C4B122.8 (2)
C10A—C11A—H11A121.3C5B—N4B—C7B111.89 (19)
C12A—C11A—H11A121.3C4B—N4B—C7B125.18 (19)
C10B—C11B—C12B118.2 (2)C5A—N5A—C6A112.5 (2)
C10B—C11B—H11B120.9C5A—N5A—H5A123.8
C12B—C11B—H11B120.9C6A—N5A—H5A123.8
C13A—C12A—C11A122.2 (2)C5B—N5B—C6B114.6 (2)
C13A—C12A—Cl1119.8 (2)C5B—N5B—H5B122.7
C11A—C12A—Cl1118.0 (2)C6B—N5B—H5B122.7
N1A—C1A—C2A—C10A62.0 (3)Cl3—C12B—C13B—C14B179.1 (2)
C5A—C1A—C2A—C10A111.6 (2)N3A—C9A—C14A—C13A174.2 (2)
N1A—C1A—C2A—C3A172.5 (2)C10A—C9A—C14A—C13A2.7 (4)
C5A—C1A—C2A—C3A13.9 (3)C12A—C13A—C14A—C9A3.1 (4)
N1A—C1A—C2A—C8A48.2 (3)N3B—C9B—C14B—C13B175.6 (2)
C5A—C1A—C2A—C8A138.2 (2)C10B—C9B—C14B—C13B2.0 (4)
C5B—C1B—C2B—C10B117.6 (2)C12B—C13B—C14B—C9B1.6 (4)
N1B—C1B—C2B—C10B60.9 (3)C4A—C3A—C31A—O4A0.7 (4)
C5B—C1B—C2B—C3B8.1 (3)C2A—C3A—C31A—O4A173.7 (2)
N1B—C1B—C2B—C3B173.3 (2)C4A—C3A—C31A—C32A179.9 (2)
C5B—C1B—C2B—C8B131.6 (2)C2A—C3A—C31A—C32A6.9 (4)
N1B—C1B—C2B—C8B49.8 (3)C4B—C3B—C31B—O4B2.5 (4)
C1A—C2A—C3A—C4A16.1 (3)C2B—C3B—C31B—O4B173.4 (2)
C10A—C2A—C3A—C4A110.0 (2)C4B—C3B—C31B—C32B175.4 (2)
C8A—C2A—C3A—C4A139.2 (2)C2B—C3B—C31B—C32B8.8 (4)
C1A—C2A—C3A—C31A171.0 (2)O4A—C31A—C32A—C33A88.0 (3)
C10A—C2A—C3A—C31A63.0 (3)C3A—C31A—C32A—C33A92.6 (3)
C8A—C2A—C3A—C31A47.8 (3)O4A—C31A—C32A—C37A86.6 (3)
C1B—C2B—C3B—C4B10.7 (3)C3A—C31A—C32A—C37A92.8 (3)
C10B—C2B—C3B—C4B116.1 (2)O4B—C31B—C32B—C37B88.3 (3)
C8B—C2B—C3B—C4B132.7 (2)C3B—C31B—C32B—C37B89.7 (3)
C1B—C2B—C3B—C31B173.6 (2)O4B—C31B—C32B—C33B82.8 (3)
C10B—C2B—C3B—C31B59.6 (3)C3B—C31B—C32B—C33B99.1 (3)
C8B—C2B—C3B—C31B51.7 (3)C37A—C32A—C33A—C34A2.3 (4)
C31A—C3A—C4A—N2A2.4 (3)C31A—C32A—C33A—C34A177.0 (3)
C2A—C3A—C4A—N2A170.8 (2)C37B—C32B—C33B—C34B2.0 (4)
C31A—C3A—C4A—N4A175.7 (2)C31B—C32B—C33B—C34B173.3 (2)
C2A—C3A—C4A—N4A11.1 (3)C32A—C33A—C34A—C35A1.2 (5)
C31B—C3B—C4B—N2B3.9 (3)C32B—C33B—C34B—C35B0.9 (4)
C2B—C3B—C4B—N2B171.9 (2)C33A—C34A—C35A—C36A4.6 (5)
C31B—C3B—C4B—N4B175.2 (2)C33A—C34A—C35A—Cl2178.1 (2)
C2B—C3B—C4B—N4B8.9 (3)C33B—C34B—C35B—C36B0.1 (5)
N1A—C1A—C5A—N5A0.7 (4)C33B—C34B—C35B—Cl4179.8 (2)
C2A—C1A—C5A—N5A174.4 (2)C34A—C35A—C36A—C37A4.5 (5)
N1A—C1A—C5A—N4A179.7 (2)Cl2—C35A—C36A—C37A178.2 (2)
C2A—C1A—C5A—N4A6.0 (3)C34B—C35B—C36B—C37B0.0 (5)
N1B—C1B—C5B—N5B1.5 (4)Cl4—C35B—C36B—C37B179.6 (2)
C2B—C1B—C5B—N5B177.0 (2)C35A—C36A—C37A—C32A0.9 (4)
N1B—C1B—C5B—N4B178.2 (2)C33A—C32A—C37A—C36A2.4 (4)
C2B—C1B—C5B—N4B3.2 (4)C31A—C32A—C37A—C36A177.1 (3)
N5A—C6A—C7A—N4A2.3 (3)C35B—C36B—C37B—C32B1.2 (4)
N5B—C6B—C7B—N4B2.6 (3)C33B—C32B—C37B—C36B2.2 (4)
C1A—C2A—C8A—O3A61.2 (3)C31B—C32B—C37B—C36B173.5 (2)
C10A—C2A—C8A—O3A179.4 (2)C5A—C1A—N1A—O2A177.7 (2)
C3A—C2A—C8A—O3A62.7 (3)C2A—C1A—N1A—O2A3.8 (4)
C1A—C2A—C8A—N3A118.9 (2)C5A—C1A—N1A—O1A3.1 (4)
C10A—C2A—C8A—N3A0.7 (2)C2A—C1A—N1A—O1A177.0 (2)
C3A—C2A—C8A—N3A117.2 (2)C5B—C1B—N1B—O2B179.3 (2)
C1B—C2B—C8B—O3B58.4 (3)C2B—C1B—N1B—O2B0.6 (3)
C10B—C2B—C8B—O3B177.7 (2)C5B—C1B—N1B—O1B1.1 (3)
C3B—C2B—C8B—O3B64.1 (3)C2B—C1B—N1B—O1B179.8 (2)
C1B—C2B—C8B—N3B120.9 (2)O3A—C8A—N3A—C9A178.5 (2)
C10B—C2B—C8B—N3B1.5 (2)C2A—C8A—N3A—C9A1.7 (3)
C3B—C2B—C8B—N3B116.6 (2)C14A—C9A—N3A—C8A179.1 (2)
C14A—C9A—C10A—C11A1.1 (3)C10A—C9A—N3A—C8A2.0 (3)
N3A—C9A—C10A—C11A176.27 (19)O3B—C8B—N3B—C9B177.7 (2)
C14A—C9A—C10A—C2A178.8 (2)C2B—C8B—N3B—C9B1.5 (3)
N3A—C9A—C10A—C2A1.4 (2)C14B—C9B—N3B—C8B178.6 (2)
C1A—C2A—C10A—C11A66.7 (3)C10B—C9B—N3B—C8B0.8 (3)
C3A—C2A—C10A—C11A58.7 (3)N5A—C5A—N4A—C4A178.6 (2)
C8A—C2A—C10A—C11A177.0 (2)C1A—C5A—N4A—C4A1.0 (3)
C1A—C2A—C10A—C9A115.8 (2)N5A—C5A—N4A—C7A2.0 (3)
C3A—C2A—C10A—C9A118.7 (2)C1A—C5A—N4A—C7A178.3 (2)
C8A—C2A—C10A—C9A0.4 (2)N2A—C4A—N4A—C5A180.0 (2)
N3B—C9B—C10B—C11B176.9 (2)C3A—C4A—N4A—C5A1.8 (3)
C14B—C9B—C10B—C11B1.1 (3)N2A—C4A—N4A—C7A0.8 (3)
N3B—C9B—C10B—C2B0.3 (2)C3A—C4A—N4A—C7A179.0 (2)
C14B—C9B—C10B—C2B177.7 (2)C6A—C7A—N4A—C5A0.4 (3)
C1B—C2B—C10B—C11B66.5 (3)C6A—C7A—N4A—C4A178.9 (2)
C3B—C2B—C10B—C11B58.6 (3)N5B—C5B—N4B—C4B179.9 (2)
C8B—C2B—C10B—C11B177.2 (2)C1B—C5B—N4B—C4B0.0 (3)
C1B—C2B—C10B—C9B117.4 (2)N5B—C5B—N4B—C7B4.0 (3)
C3B—C2B—C10B—C9B117.5 (2)C1B—C5B—N4B—C7B176.2 (2)
C8B—C2B—C10B—C9B1.1 (2)N2B—C4B—N4B—C5B177.7 (2)
C9A—C10A—C11A—C12A0.0 (3)C3B—C4B—N4B—C5B3.1 (3)
C2A—C10A—C11A—C12A177.2 (2)N2B—C4B—N4B—C7B2.1 (3)
C9B—C10B—C11B—C12B0.1 (3)C3B—C4B—N4B—C7B178.7 (2)
C2B—C10B—C11B—C12B175.6 (2)C6B—C7B—N4B—C5B4.0 (3)
C10A—C11A—C12A—C13A0.6 (4)C6B—C7B—N4B—C4B179.9 (2)
C10A—C11A—C12A—Cl1179.50 (17)N4A—C5A—N5A—C6A3.8 (3)
C10B—C11B—C12B—C13B0.5 (4)C1A—C5A—N5A—C6A176.6 (2)
C10B—C11B—C12B—Cl3180.00 (18)C7A—C6A—N5A—C5A3.8 (3)
C11A—C12A—C13A—C14A2.2 (4)C1B—C5B—N5B—C6B178.1 (3)
Cl1—C12A—C13A—C14A177.9 (2)N4B—C5B—N5B—C6B2.2 (3)
C11B—C12B—C13B—C14B0.5 (4)C7B—C6B—N5B—C5B0.4 (3)
Hydrogen-bond geometry (Å, º) top
Cg1 and Cg2 are the centroids of rings C1A–C5A/N4A and C1B–C5B/N4B, respectively.
D—H···AD—HH···AD···AD—H···A
N3B—H3B···O4A0.861.912.774 (3)179
N5A—H5A···O1A0.862.062.592 (3)119
N5B—H5B···O1B0.862.082.604 (3)119
N2A—H10···O4A0.861.852.510 (3)132
N2B—H12···O4B0.861.862.515 (3)132
N3A—H3A···O4Bi0.861.962.823 (2)177
N5A—H5A···O3Bii0.862.423.131 (3)140
N5B—H5B···O3Aiii0.862.262.899 (3)131
C7A—H5···O3Aii0.972.583.302 (3)132
C7A—H6···O1Biv0.972.593.221 (3)123
C7A—H5···Cg1ii0.972.893.679 (3)139
C7B—H8···Cg2v0.972.853.747 (3)155
Symmetry codes: (i) x+1, y, z; (ii) x+1, y, z; (iii) x+1, y+1, z; (iv) x, y1, z; (v) x, y+1, z.
Hydrogen-bond geometry (Å, º) top
Cg1 and Cg2 are the centroids of rings C1A–C5A/N4A and C1B–C5B/N4B, respectively.
D—H···AD—HH···AD···AD—H···A
N3B—H3B···O4A0.861.912.774 (3)179
N5A—H5A···O1A0.862.062.592 (3)119
N5B—H5B···O1B0.862.082.604 (3)119
N2A—H10···O4A0.861.852.510 (3)132
N2B—H12···O4B0.861.862.515 (3)132
N3A—H3A···O4Bi0.861.962.823 (2)177
N5A—H5A···O3Bii0.862.423.131 (3)140
N5B—H5B···O3Aiii0.862.262.899 (3)131
C7A—H5···O3Aii0.972.583.302 (3)132
C7A—H6···O1Biv0.972.593.221 (3)123
C7A—H5···Cg1ii0.972.893.679 (3)139
C7B—H8···Cg2v0.972.853.747 (3)155
Symmetry codes: (i) x+1, y, z; (ii) x+1, y, z; (iii) x+1, y+1, z; (iv) x, y1, z; (v) x, y+1, z.
 

Acknowledgements

JS and RAN thank the management of the Madura College for their encouragement and support. RRK thanks the DST, New Delhi, for funds under the fast-track scheme (grant No. R/FT/CS-073/2009).

References

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First citationNagalakshmi, R. A., Suresh, J., Sivakumar, S., Kumar, R. R. & Lakshman, P. L. N. (2014). Acta Cryst. E70, o604–o605.  CSD CrossRef CAS IUCr Journals Google Scholar
First citationSheldrick, G. M. (2008). Acta Cryst. A64, 112–122.  Web of Science CrossRef CAS IUCr Journals Google Scholar
First citationSpek, A. L. (2009). Acta Cryst. D65, 148–155.  Web of Science CrossRef CAS IUCr Journals Google Scholar

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Volume 70| Part 9| September 2014| Pages o971-o972
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