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  1. 2541
    “…In the title 1:1 adduct, C(6)H(6)N(2)O·C(11)H(8)O(2), the amide group is slightly twisted out of the plane of the aromatic ring, with a C—C—C—N torsion angle of 25.11 (19)°, whereas the carb­oxy­lic acid group is approximately coplanar with the bicylic ring system, with a C—C—C—O torsion angle of 10.9 (2)°. …”
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    Isonicotinamide–2-naphthoic acid (1/1)
  2. 2542
    “…The two meth­oxy groups at the meta positions of the trimeth­oxy­benzene group are almost coplanar with the ring [C—O—C—C = 1.62 (16) and 178.33 (10)°], whereas the third meth­oxy group, at the para position, is (+)-synclinal with the ring. …”
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    (E)-4-Hy­droxy-N′-(3,4,5-trimeth­oxy­benzyl­idene)benzohydrazide
  3. 2543
    “…The meth­oxy groups deviate somewhat from the plane of the benzene ring, with C—C—O—C torsion angles of −15.6 (1) and 9.17 (6)°. In the crystal, mol­ecules form centrosymmetric dimers via donor–acceptor π–π inter­actions, with a centroid–centroid distance of 3.401 (1) Å.…”
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    5-(3,4-Dimeth­oxy­benzyl­idene)-1,3-dimethyl-1,3-diazinane-2,4,6-trione
  4. 2544
    “…The crystal structure of the title co-crystal, 2C(6)H(7)N(3)O·C(6)H(10)O(4), is a second polymorph, designated form II, of the co-crystal formed between the two mol­ecules [Lemmerer et al. (2011 ▶). …”
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    Form II of adipic acid–nicotinohydrazide (1/2)
  5. 2545
    “…The acetyl group is almost perpendicular to the benzene ring to which it is connected [C—C—O—C torsion angle = −106.7 (3)°]. The conformation about the C=C double bond [1.331 (4) Å] is E. …”
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    1,4-Di-tert-butyl (2R,3R)-2-({(2E)-3-[4-(acet­yloxy)phen­yl]prop-2-eno­yl}­oxy)-3-hy­droxy­butane­dioate
  6. 2546
    “…In the title compound, C(15)H(15)ClN(2)O(2)S, the 2-amino­acetamide N—C(=O)—C—N unit is approximately planar, with an r.m.s. deviation of 0.020 (4) Å. …”
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    2-Amino-N-[3-(2-chloro­benzo­yl)-5-ethyl­thio­phen-2-yl]acetamide
  7. 2547
    por Smith, Graham, Wermuth, Urs D.
    Publicado 2012
    “…In the title racemic salt, C(6)H(13)N(2)O(+)·C(8)H(11)O(4) (−), formed from the reaction of cis-cyclo­hexane-1,2-dicarb­oxy­lic anhydride with isonipecotamide, the cations are linked into duplex chain substructures through both centrosymmetric cyclic head-to-head ‘amide motif’ hydrogen-bonding associations [graph set R (2) (2)(8)] and ‘side-by-side’ R (2) (2)(14) associations. …”
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    rac-4-Carbamoylpiperidinium cis-2-car­boxy­cyclo­hexane-1-carboxyl­ate
  8. 2548
    “…The three-dimensional crystal packing is consolidated by C—H⋯O, C—H⋯π and π–π [2-tol­yl–2-tolyl centroid–centroid distance = 3.8099 (6) Å] inter­actions.…”
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    8-Benz­yloxy-2-methyl-3-(2-methyl­phenyl)quinazolin-4(3H)-one
  9. 2549
    “…Moreover, there is a short intra­molecular C=O⋯C=O contact of 2.614 (2) Å between the benzoyl substituents.…”
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    [8-(4-Chloro­benzo­yl)-2,7-dimeth­oxy­naphthalen-1-yl](2,4,6-trimethyl­phen­yl)methanone
  10. 2550
    “…In the crystal, mol­ecules are linked by N—H⋯O, C—H⋯O and C—H⋯N inter­actions, resulting is chains propagating along the a-axis direction.…”
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    3β-Chloro-6-[2-(2-cyano­acet­yl)hydrazin-1-yl­idene]-5α-cholestane
  11. 2551
    “…The meth­oxy group of the 4-hy­droxy-3-meth­oxy­phenyl is almost coplanar with its bound benzene ring, as seen by the C(meth­yl)—O—C—C torsion angle of −0.35 (16)°. In the crystal, mol­ecules are linked into a three-dimensional network by N—H⋯O, O—H⋯N and O—H⋯O hydrogen bonds and also weak C—H⋯O inter­actions. …”
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    (E)-4-Bromo-N′-(4-hy­droxy-3-meth­oxy­benzyl­idene)benzohydrazide monohydrate
  12. 2552
    “…In the title acrylonitrile derivative, C(17)H(14)N(2)OS, the central amino­acryl­aldehyde O=C—C=C—NH unit, wherein an intra­molecular N—H⋯O hydrogen bond generates an S(6) ring motif, is approximately planar, with an r.m.s. deviation of 0.0234 (2) Å for the five non-H atoms. …”
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    (E)-3-Anilino-2-benzoyl-3-(methyl­sulfan­yl)acrylonitrile
  13. 2553
    “…In the crystal, mol­ecules are linked by N—H⋯O, C—H⋯O, O—H⋯O and O—H⋯N hydrogen bonds into sheets lying parallel to the ab plane. …”
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    4-Methyl­benzoic acid–N′-[(E)-4-methyl­benzyl­idene]pyridine-4-carbohydrazide–water (1/1/1)
  14. 2554
    “…These hydrogen bonds, along with the inter­molecular N—H⋯O=C hydrogen-bonding inter­actions, connect the mol­ecules into a three-dimensional network. …”
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    11-(4-Meth­oxy­phen­yl)-3,3-dimethyl-2,3,4,5,10,11-hexa­hydro-1H-dibenzo[b,e][1,4]diazepin-1-one monohydrate
  15. 2555
    por Zhong, Baoyun, Li, Shengli, Chen, Guifang
    Publicado 2012
    “…In the title compound, [Cu(C(7)H(7)N(2)O)(C(7)H(8)N(2)O)(H(2)O)]ClO(4)·H(2)O, the Cu(II) ion is five-coordinated by the N atoms from the 1-(pyridin-2-yl)ethanone oximate and 1-(pyridin-2-yl)ethan­one oxime ligands and by the water O atom in a distorted square-pyramidal geometry. …”
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    Aqua[1-(pyridin-2-yl)ethanone oximato][1-(2-pyridin-2-yl)ethanone oxime]­copper(II) perchlorate mono­hydrate
  16. 2556
    “…A three-dimensional architecture is stabilized by C—H⋯O, C—H⋯S and C—H⋯Cl inter­actions.…”
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    (Bipyridine-κ(2) N,N′)chlorido[N-(2-hydroxy­ethyl)-N-isopropyl­dithio­carbamato-κ(2) S,S′]zinc(II)
  17. 2557
    “…Minor differences are noted in the dihedral angles between the terminal benzene rings of 56.03 (10) and 54.62 (10)°, and in the orientations of meth­oxy groups with respect to the benzene rings to which they are attached [C—O—C—C torsion angles = 169.11 (19) and −172.37 (18)°]. …”
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    2-[(E)-4-Meth­oxy­benzyl­idene]-1,2,3,4-tetra­hydro­naphthalen-1-one
  18. 2558
    “…In the crystal structure of the title molecular salt, C(13)H(30)N(5)O(+)·C(24)H(20)B(−), discrete guanidinium cations and tetra­phenyl­borate anions are present. …”
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    N,N,N′,N′,N′′-Penta­methyl-N′′-[3-(1,3,3-trimethyl­ureido)prop­yl]guanidinium tetra­phenyl­borate
  19. 2559
    “…The latter is coplanar with the meth­oxy(methyl­idene)amine fragment [N—O—C—C torsion angle = −171.7 (2)°]. Linear supra­molecular chains, approximately along [112], sustained by C—H⋯π inter­actions, feature in the crystal packing.…”
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    (4E)-N-[(2-Bromo­phen­yl)meth­oxy]-1,3-dimethyl-2,6-diphenyl­piperidin-4-imine
  20. 2560
    “…The chloro­benzene ring occupies a position orthogonal to the meth­oxy(methyl­idene)amine residue [N—O—C—C torsion angle = −87.90 (15)°]. The conformation about the imine C=N bond [1.278 (2) Å] is E, and the chloro substituent is anti to the piperidine N atom. …”
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    (4E)-N-[(2-Chloro­phen­yl)meth­oxy]-1,3-dimethyl-2,6-diphenyl­piperidin-4-imine
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