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1.  4-Chloro­anilinium hydrogen oxalate hemihydrate 
In the title hydrated mol­ecular salt, C6H7ClN+·C2HO4 −·0.5H2O, the water O atom lies on a crystallographic twofold axis. In the crystal, the anions are linked by O—H⋯O hydrogen bonds, forming chains propagating along the b axis. These chains are inter­connected through O—H⋯O hydrogen bonds from the water mol­ecules and N—H⋯O hydrogen bonds from the cations, building layers parallel to the ab plane.
PMCID: PMC2984091  PMID: 21580789
2.  4-Chloro­anilinium (4-chloro­phen­yl)guanidinium dichloride hemihydrate 
In the title hydrated molecular salt, C6H7ClN+·C7H9ClN3 +·2Cl−·0.5H2O, the water O atom lies on a crystallographic twofold axis. In the crystal, inter­molecular N—H⋯Cl and O—H⋯Cl hydrogen bonds form layers perpendicular to the ac plane in which both the water mol­ecule and the chloride anion are involved in connecting the layers into a three-dimensional structure.
PMCID: PMC2983776  PMID: 21580629
3.  3-Chloro­anilinium 4-methyl­benzene­sulfonate 
In the crystal structure of the title salt, C6H7ClN+·C7H7O3S−, the cations and anions are linked via N—H⋯O hydrogen bonds into doubled chains in [010]. Weak inter­molecular C—H⋯π inter­actions further link these chains into layers parallel to the bc plane.
PMCID: PMC3247339  PMID: 22219957
4.  2-Chloro­anilinium perchlorate 
In the crystal of the title compound, C6H7ClN+·ClO4 −, a layer-like structure parallel to the bc plane is formed through N—H⋯O hydrogen bonds between the cations and anions. These layers are connected by weak C—H⋯O inter­actions, forming a three-dimensional network.
PMCID: PMC3393925  PMID: 22798790
5.  4-Chloro­anilinium 3-carb­oxy­prop-2-enoate 
In the title compound, C6H7ClN+·C4H3O4 −, the cations and anions lie on mirror planes and hence only half of the mol­ecules are present in the asymmeric unit. The 4-chloro­anilinium cation and hydrogen maleate anion in the asymmetric unit are each planar and are oriented at an angle of 15.6 (1)° to one another and perpendicular to the b axis. A characterestic intra­molecular O—H⋯O hydrogen bond, forming an S(7) motif, is observed in the maleate anion. In the crystal, the cations and anions are linked by N—H⋯O hydrogen bonds, forming layers in the ab plane. The aromatic rings of the cations are sandwiched between hydrogen-bonded chains and rings formed through the amine group of the cation and maleate anions, leading to alternate hydro­phobic (z = 0 or 1) and hydro­philic layers (z = 1/2) along the c axis.
PMCID: PMC3343938  PMID: 22590019
6.  4-Chloro­anilinium 4-methyl­benzene­sulfonate 
In the crystal structure of the title salt, C6H7ClN+·C7H7O3S−, the cations and anions are linked via N—H⋯O hydrogen bonds into double chains in [101]. Weak inter­molecular C—H⋯π-ring inter­actions link these chains into layers parallel to the ac plane.
PMCID: PMC3238943  PMID: 22199792
7.  4-Chloro­anilinium tetra­fluoro­borate 18-crown-6 clathrate 
In the title compound, C6H7ClN+·BF4 −·C12H24O6, the complete cation is generated by crystallographic mirror symmetry, with two C atoms and the N and Cl atoms lying on the mirror plane. The complete crown ether is also generated by mirror symmetry, as is the anion (in which the B and two F atoms lie on the mirror plane). The –NH3 + group of the cation inserts into the crown-ether ring and forms bifurcated N—H⋯(O,O) hydrogen bonds. The H atoms of the –NH3 + group were modelled as disordered across the mirror plane.
PMCID: PMC3295507  PMID: 22412618
8.  4-Chloro­anilinium 2-carb­oxy­acetate 
In the title molecular salt, C6H7ClN+·C3H3O4 −, the components are linked by N—H⋯O and O—H⋯O hydrogen bonds, leading to a two-dimensional network parallel to the bc plane. Weak C—H⋯O inter­actions are also observed.
PMCID: PMC3393895  PMID: 22798760
9.  4-Chloro­anilinium 2-carb­oxy-4,5-dichloro­benzoate 
The structure of the 1:1 proton-transfer compound of 4-chloro­aniline with 4,5-dichloro­phthalic acid (DCPA), viz. C6H7ClN+·C8H3Cl2O4 −, has been determined at 130 K. The non-planar hydrogen phthalate anions and the 4-chloro­anilinium cations form two-dimensional O—H⋯O and N—H⋯O hydrogen-bonded substructures which have no peripheral extension. Between the sheets there are weak π–π associations between alternating cation–anion aromatic ring systems [shortest centroid–centroid separation = 3.735 (4) Å].
PMCID: PMC2970019  PMID: 21577526
10.  4-Chloro­anilinium perchlorate–18-crown-16 (1/1) 
In the title compound, C6H7ClN+·ClO4 −·C12H24O6, the cation forms a 1:1 complex with the crown ether, viz [C6H7ClN-(18-crown-6)]+, in which the –NH3 + unit nests in the crown and inter­acts with it through bifurcated N—H⋯O hydrogen bonding. All constituents of the structure have crystallographically imposed mirror symmetry except for the H atoms of the –NH3 + group which are disordered across the mirror.
PMCID: PMC3239039  PMID: 22199887
11.  4-Chloro­anilinium bromide 
In the title compound, C6H7ClN+·Br−, the amino N atom is protonated. All non-H atoms of the cation are essentially coplanar [r.m.s. deviation = 0.004 (3) Å]. In the crystal, N—H⋯Br hydrogen bonds connect the ions, forming a ribbon-like structure propagating along [010].
PMCID: PMC3393291  PMID: 22807848
12.  Tetra­kis(4-chloro­anilinium) hexa­chlorido­stannate(IV) dichloride 
The asymmetric unit of the title compound, (C6H7ClN)4[SnCl6]Cl2, comprises two 4-chloro­anilinium cations, half of an [SnCl6]2− anion and a Cl− anion. The SnIV atom, located on a special position on a twofold rotation axis, exhibits an octa­hedral environment. In the crystal, mol­ecules are linked by N—H⋯Cl hydrogen bonds between the 4-chloro­anilinium cations, [SnCl6]2− anions and Cl− anions.
PMCID: PMC3379112  PMID: 22719333
13.  Hexa­kis­(3-chloro-2-methyl­anilinium) cyclo­hexa­phosphate dihydrate 
In the organic/inorganic salt hydrate, 6C7H9ClN+·P6O18 6−·2H2O, the cyclo­hexa­phosphate anion resides on an inversion centre. The asymmetric unit consists of three cations, one half-anion and a water mol­ecule. In the crystal, the water mol­ecules and the [P6O18]6− anions are linked by O—H⋯O hydrogen bonds, generating infinite layers parallel to the ab plane. These layers are inter­connected by the organic cations through N—H⋯O hydrogen bonds.
PMCID: PMC3914095  PMID: 24527000
14.  2-Phenyl­anilinium dihydrogen phosphate 
In the crystal structure of the title compound, C12H12N+·H2PO4 −, the dihydrogen phosphate anions and the 2-phenyl­anilinium cations are associated via O—H⋯O and N—H⋯O hydrogen bonds so as to build inorganic layers around the x = 1/2 plane. The organic entities are anchored between these layers through C—H⋯O hydrogen bonds, forming a three-dimensional infinite network. The dihedral angle between the aromatic rings is 44.7 (4)°.
PMCID: PMC2983432  PMID: 21587543
15.  2,6-Diethyl­anilinium dihydrogen phosphate–phospho­ric acid (1/1) 
In the crystal structure of the title salt, C10H16N+·H2PO4 −·H3PO4, the H2PO4 − and H3PO4 components are connected into infinite chains extending along the b-axis direction by way of O—H⋯O links. These chains are also linked through O—H⋯O hydrogen bonds thus building up a supra­molecular two-dimensional framework extending parallel to (001). The organic cations cross-link the anionic layers by way of multiple N—H⋯O inter­actions, leading to a cohesive network.
PMCID: PMC3050257  PMID: 21522615
16.  2-(Methoxy­carbon­yl)anilinium dihydrogen phosphate 
The title compound, C8H10NO2 +·H2PO4 −, is a derivative of the naturally occurring compound methyl­anthranilate. The asymmetric unit comprises the 2-(methoxy­carbon­yl)anilinium cation and the dihydrogen phosphate anion. In the cation, the dihedral angle between the benzene ring plane and that through the methyl ester substituent is 22.94 (9)°. In the crystal, adjacent cations and anions form dimers through N—H⋯O and O—H⋯O hydrogen bonds, respectively. Additional N—H⋯O and C—H⋯O contacts result in a network of cation and anion dimers stacked down the b axis.
PMCID: PMC2977506  PMID: 21583492
17.  Bis(3-methyl­anilinium) naphthalene-1,5-disulfonate 
In the crystal of the title mol­ecular salt, 2C7H10N+·C10H6O6S2 2−, the naphthalene-1,5-disulfonate anion is located on an inversion center and accepts N—H⋯O hydrogen bonds from the 3-methyl­anilinium cations, forming supra­molecular layers parallel to the ac plane.
PMCID: PMC3379332  PMID: 22719530
18.  4-Chloro­anilinium thio­cyanate 
In the title compound, C6H7ClN+·NCS−, the benzene ring and the protonated amine and chloro substituents are nearly planar, with a maximum deviation of 0.002 (2) Å for the N atom. In the crystal, the mol­ecules are linked by N—H⋯N and N—H⋯S hydrogen bonds into a chain along the b axis.
PMCID: PMC3393264  PMID: 22807821
19.  3-Chloro-2-methyl­anilinium dihydrogenphosphate 
The structure of the title compound, C7H9ClN+·H2PO4 −, contains inorganic layers built by (H2PO4)− anions and which are parallel to the ab planes around z = . 3-Chloro-2-methyl­anilinium cations are anchored between the inorganic layers through N—H⋯O hydrogen bonds. Electrostatic and van der Waals inter­actions, as well as hydrogen bonds, maintain the structural cohesion.
PMCID: PMC2960226  PMID: 21201545
20.  2-Amino­anilinium 2-chloro­acetate 
In the crystal structure of the title compound, C6H9N2 +·ClCH2COO−, prepared by the reaction of OPDA (orthophenelynediamine) with chloro­acetic ­acid, N—H⋯O hydrogen bonds generate ladder-like chains and very weak inter­molecular C—H⋯Cl hydrogen-bonding inter­actions between the anions and cations lead to a supra­molecular network. C—H⋯O inter­actions also occur.
PMCID: PMC3007232  PMID: 21588271
21.  2-Meth­oxy­anilinium 3-hy­droxy-2,4,6-trinitro­phenolate 
The cation and anion of the title mol­ecular salt, C7H10NO+·C6H2N3O8 −, are linked via an N—H⋯O hydrogen bond. An intra­molecular O—H⋯O hydrogen bond is also found in the anion. In the crystal, the anions self-assemble via O—H⋯O hydrogen bonds, forming a C(9) supra­molecular chain the b axis. Further inter­molecular N—H⋯O inter­actions also occur.
PMCID: PMC3052155  PMID: 21522431
22.  2,5-Dichloro­anilinium 4-chloro­benzene­sulfonate 
In the crystal of the title compound, C6H6Cl2N+·C6H4ClO3S−, the 2,5-dichloroanilinium cations and 4-chlorobenzenesulfonate anions are located on a crystallographic mirror plane and are connected by N—H⋯O hydrogen bonds. In the crystal, the connectivity of the hydrogen bonds leads to double chains propagating in [010].
PMCID: PMC3099771  PMID: 21754230
23.  N,N-Diethyl­anilinium 5-(5-chloro-2,4-dinitro­phen­yl)-2,6-dioxo-1,2,3,6-tetra­hydro­pyrimidin-4-olate 
In the anion of the title salt, C10H16N+·C10H4ClN4O7 − [trivial name = N,N-diethyl­anilinium 5-(3-chloro-4,6,-dinitro­phen­yl)barbiturate], the dihedral angle between the benzene and pyrimidine rings is 45.49 (6)°. The mean plane of the nitro group, which is ortho-substituted with respect to the pyrimidine ring, is twisted by 41.57 (13)° from the benzene ring, while the mean plane of the nitro group, which is para-substituted, is twisted by 14.41 (12)° from this ring. In the crystal, N—H⋯O hydrogen bonds link cations and anions into chains along [1-10]. Within the chains, inversion-related anionic barbiturate anions form R 2 2(8) ring motifs.
PMCID: PMC3588430  PMID: 23476581
24.  5-Chloro-2-methoxy­anilinium nitrate 
The title salt, C7H9ClNO+·NO3 −, exhibits extensive hydrogen bonding between the ammonium functional group and the nitrate anion. A two-dimensional network of bifurcated N—H⋯O hydrogen bonds generates corrugated layers in the bc plane. The organic mol­ecules are stacked in a parallel orientation as a result of π–π inter­actions, with an inter-ring distance of 3.837 Å.
PMCID: PMC2961331  PMID: 21202293
25.  N,N-Diethyl­anilinium 5-(2,4-dinitro­phen­yl)-2,6-dioxo-1,2,3,6-tetra­hydro­pyrimidin-4-olate 
The asymmetric unit of the title mol­ecular salt, C10H16N+·C10H5N4O7 − (trivial name: N,N-diethyl­anilinium 2,4-dinitro­phenyl­barbiturate), comprises two anion–cation units. In the anions, the dinitro­phenyl ring and the mean plane of the barbiturate ring [planar to within 0.011 (2) and 0.023 (2) Å in the two anions] are inclined to one another by 41.47 (9) and 45.12 (9)°. In the crystal, the anions are linked via strong N—H⋯O hydrogen bonds, forming chains propagating along [10-1]. Within the chains, adjacent inversion-related anionic barbiturate entities are joined through R 2 2(8) ring motifs. The cations are linked to the chains via N—H⋯O hydrogen bonds. The chains are linked via a number of C—H⋯O inter­actions, forming a three-dimensional structure.
PMCID: PMC3588294  PMID: 23476417

Results 1-25 (574626)