Literature DB >> 23125778

2-(Furan-2-yl)-1,3-bis(furan-2-ylmeth-yl)-1H-benzimidazol-3-ium chloride monohydrate.

David K Geiger1, H Cristina Geiger, Jared M Deck.   

Abstract

The title hydrated salt, C(21)H(17)N(2)O(3) (+)·Cl(-)·H(2)O, exhibits disorder in one of the furan rings. The major and minor components have a refined occupancy ratio of 0.844 (19):0.156 (19). The structure displays intermolecular hydrogen bonding involving the water molecule and the chloride anion. Close intermolecular C-H⋯Cl and C-H⋯(furan ring) inter-actions complete the hydrogen bonding.

Entities:  

Year:  2012        PMID: 23125778      PMCID: PMC3470365          DOI: 10.1107/S1600536812040135

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For examples of the synthesis of substituted benzimidazolium salts, see: Wang & Chang (2006 ▶); Hoesl et al. (2004 ▶); Rivas et al. (2001 ▶, 2002 ▶). For examples of structures of other tris­ubstituted benzimidazolium salts, see: Ennajih et al. (2009 ▶, 2010 ▶); Akkurt et al. (2008 ▶, 2004 ▶); Smith & Luss (1975 ▶). For the structure of 1,3-bis(furan-2-ylmethyl)-1H-benzo[d]imidazol-3-ium chloride, see: Akkurt et al. (2009 ▶). For other related literature, see: Costache et al. (2007 ▶); Elmali et al. (2005 ▶); Hayakawa et al. (1996 ▶); Horton et al. (2003 ▶); Nahlé et al. (2012 ▶); Welton (1999 ▶).

Experimental

Crystal data

C21H17N2O3 +·Cl−·H2O M = 398.83 Triclinic, a = 9.4723 (12) Å b = 9.9129 (14) Å c = 11.2779 (16) Å α = 97.980 (5)° β = 110.359 (4)° γ = 93.547 (4)° V = 976.3 (2) Å3 Z = 2 Mo Kα radiation μ = 0.23 mm−1 T = 200 K 0.30 × 0.07 × 0.07 mm

Data collection

Bruker SMART X2S benchtop diffractometer Absorption correction: multi-scan (SADABS; Bruker, 2009 ▶) T min = 0.91, T max = 0.98 9477 measured reflections 3419 independent reflections 2732 reflections with I > 2σ(I) R int = 0.036

Refinement

R[F 2 > 2σ(F 2)] = 0.045 wR(F 2) = 0.129 S = 1.05 3419 reflections 272 parameters 10 restraints H atoms treated by a mixture of independent and constrained refinement Δρmax = 0.62 e Å−3 Δρmin = −0.21 e Å−3 Data collection: APEX2 (Bruker, 2010 ▶); cell refinement: SAINT (Bruker, 2009 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: XSHELL (Bruker, 2004 ▶) and Mercury (Macrae et al., 2008 ▶); software used to prepare material for publication: publCIF (Westrip, 2010 ▶). Crystal structure: contains datablock(s) global, I. DOI: 10.1107/S1600536812040135/gg2097sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536812040135/gg2097Isup3.hkl Supplementary material file. DOI: 10.1107/S1600536812040135/gg2097Isup4.mol Supplementary material file. DOI: 10.1107/S1600536812040135/gg2097Isup4.cml Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C21H17N2O3+·Cl·H2OZ = 2
Mr = 398.83F(000) = 416
Triclinic, P1Dx = 1.357 Mg m3
a = 9.4723 (12) ÅMo Kα radiation, λ = 0.71073 Å
b = 9.9129 (14) ÅCell parameters from 3551 reflections
c = 11.2779 (16) Åθ = 2.4–24.8°
α = 97.980 (5)°µ = 0.23 mm1
β = 110.359 (4)°T = 200 K
γ = 93.547 (4)°Needle, clear colourless
V = 976.3 (2) Å30.30 × 0.07 × 0.07 mm
Bruker SMART X2S benchtop diffractometer3419 independent reflections
Radiation source: XOS X-beam microfocus source, Bruker SMART X2S benchtop2732 reflections with I > 2σ(I)
Doubly curved silicon crystal monochromatorRint = 0.036
Detector resolution: 8.3330 pixels mm-1θmax = 25.2°, θmin = 2.0°
ω scansh = −11→11
Absorption correction: multi-scan (SADABS; Bruker, 2009)k = −11→11
Tmin = 0.91, Tmax = 0.98l = −13→13
9477 measured reflections
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.045Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.129H atoms treated by a mixture of independent and constrained refinement
S = 1.05w = 1/[σ2(Fo2) + (0.0633P)2 + 0.4042P] where P = (Fo2 + 2Fc2)/3
3419 reflections(Δ/σ)max < 0.001
272 parametersΔρmax = 0.62 e Å3
10 restraintsΔρmin = −0.21 e Å3
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.
xyzUiso*/UeqOcc. (<1)
Cl10.44526 (6)0.74517 (6)0.50520 (6)0.0460 (2)
OW0.6147 (4)0.9554 (2)0.3947 (2)0.0967 (9)
HO10.597 (5)1.033 (2)0.423 (4)0.145*
HO20.575 (5)0.902 (3)0.429 (4)0.145*
C10.1566 (2)0.5684 (2)0.68521 (18)0.0318 (5)
C20.0112 (2)0.5062 (2)0.66052 (18)0.0311 (5)
C3−0.0290 (3)0.3649 (2)0.62089 (19)0.0365 (5)
H3−0.12830.32250.60420.044*
C40.0851 (3)0.2905 (2)0.6075 (2)0.0435 (6)
H40.06380.19380.58170.052*
C50.2319 (3)0.3538 (3)0.6310 (2)0.0449 (6)
H50.30620.29860.61970.054*
C60.2706 (3)0.4929 (2)0.6698 (2)0.0398 (5)
H60.36950.53540.68530.048*
N1−0.07374 (18)0.61074 (18)0.68249 (15)0.0303 (4)
C70.0161 (2)0.7312 (2)0.72021 (18)0.0312 (5)
N20.15618 (19)0.70877 (18)0.72206 (15)0.0316 (4)
C8−0.0297 (2)0.8639 (2)0.7526 (2)0.0371 (5)
C90.0340 (8)0.9713 (6)0.8502 (5)0.0481 (14)0.844 (19)
H90.12830.97840.91920.058*0.844 (19)
C10−0.0713 (7)1.0725 (7)0.8273 (7)0.0587 (14)0.844 (19)
H10−0.05891.160.87870.07*0.844 (19)
C11−0.1853 (5)1.0220 (6)0.7243 (8)0.0689 (16)0.844 (19)
H11−0.27151.06770.68840.083*0.844 (19)
O1−0.1656 (4)0.8939 (6)0.6734 (6)0.0664 (14)0.844 (19)
C9'0.059 (5)0.970 (3)0.843 (3)0.0481 (14)0.156 (19)
H9'0.16610.98450.8870.058*0.156 (19)
C10'−0.057 (4)1.053 (5)0.850 (4)0.0587 (14)0.156 (19)
H10'−0.04141.13810.90550.07*0.156 (19)
C11'−0.187 (3)0.992 (3)0.770 (3)0.0689 (16)0.156 (19)
H11'−0.27831.03240.75410.083*0.156 (19)
O1'−0.1809 (18)0.862 (2)0.708 (3)0.0664 (14)0.156 (19)
C12−0.2298 (2)0.5859 (2)0.6823 (2)0.0389 (5)
H12A−0.290.51360.60890.047*
H12B−0.27930.67090.67210.047*
C13−0.2264 (2)0.5425 (2)0.8045 (2)0.0378 (5)
C14−0.2923 (3)0.4323 (3)0.8311 (2)0.0524 (7)
H14−0.35550.35640.77120.063*
C15−0.2481 (4)0.4523 (3)0.9676 (3)0.0634 (8)
H15−0.2780.3931.01610.076*
C16−0.1564 (3)0.5706 (3)1.0140 (2)0.0570 (7)
H16−0.10820.60761.10270.068*
O2−0.14159 (19)0.63101 (18)0.91660 (15)0.0492 (4)
C170.2888 (2)0.8126 (2)0.7527 (2)0.0387 (5)
H17A0.25430.90460.74830.046*
H17B0.3370.79310.68810.046*
C180.4023 (3)0.8125 (2)0.8827 (2)0.0424 (6)
C190.5399 (3)0.7716 (3)0.9248 (3)0.0663 (8)
H190.59310.73210.87380.08*
C200.5922 (4)0.7991 (4)1.0628 (3)0.0774 (10)
H200.68640.78071.12060.093*
C210.4837 (4)0.8549 (3)1.0937 (3)0.0652 (8)
H210.48820.8841.17890.078*
O30.3639 (2)0.86463 (18)0.98518 (16)0.0523 (5)
U11U22U33U12U13U23
Cl10.0399 (4)0.0385 (3)0.0571 (4)0.0009 (2)0.0175 (3)0.0011 (3)
OW0.197 (3)0.0528 (13)0.0828 (16)0.0360 (17)0.0950 (18)0.0222 (12)
C10.0345 (12)0.0383 (12)0.0231 (10)0.0040 (9)0.0104 (9)0.0074 (8)
C20.0344 (12)0.0379 (12)0.0215 (9)0.0063 (9)0.0091 (8)0.0084 (8)
C30.0400 (13)0.0381 (12)0.0290 (11)0.0011 (10)0.0095 (9)0.0075 (9)
C40.0601 (16)0.0352 (12)0.0345 (12)0.0095 (11)0.0155 (11)0.0055 (10)
C50.0477 (15)0.0508 (15)0.0397 (13)0.0198 (12)0.0173 (11)0.0086 (11)
C60.0360 (12)0.0494 (14)0.0363 (12)0.0098 (11)0.0145 (10)0.0086 (10)
N10.0274 (9)0.0353 (10)0.0271 (9)0.0025 (8)0.0082 (7)0.0067 (7)
C70.0326 (11)0.0373 (12)0.0233 (10)0.0021 (9)0.0091 (8)0.0075 (8)
N20.0295 (10)0.0366 (10)0.0290 (9)0.0019 (8)0.0110 (7)0.0067 (7)
C80.0356 (12)0.0401 (13)0.0367 (12)0.0067 (10)0.0136 (10)0.0080 (10)
C90.041 (3)0.0451 (15)0.0502 (16)−0.0033 (18)0.0118 (16)−0.0023 (12)
C100.075 (3)0.033 (3)0.071 (3)0.0086 (18)0.032 (2)0.002 (2)
C110.072 (2)0.055 (2)0.078 (4)0.037 (2)0.020 (2)0.012 (2)
O10.0532 (14)0.059 (2)0.067 (2)0.0210 (14)−0.0006 (13)−0.0014 (16)
C9'0.041 (3)0.0451 (15)0.0502 (16)−0.0033 (18)0.0118 (16)−0.0023 (12)
C10'0.075 (3)0.033 (3)0.071 (3)0.0086 (18)0.032 (2)0.002 (2)
C11'0.072 (2)0.055 (2)0.078 (4)0.037 (2)0.020 (2)0.012 (2)
O1'0.0532 (14)0.059 (2)0.067 (2)0.0210 (14)−0.0006 (13)−0.0014 (16)
C120.0333 (12)0.0452 (13)0.0379 (12)0.0045 (10)0.0119 (10)0.0084 (10)
C130.0338 (12)0.0430 (13)0.0342 (12)0.0038 (10)0.0101 (9)0.0043 (10)
C140.0618 (17)0.0512 (16)0.0424 (14)−0.0091 (13)0.0191 (12)0.0079 (12)
C150.083 (2)0.0618 (18)0.0477 (15)−0.0101 (16)0.0261 (15)0.0175 (14)
C160.0727 (19)0.0634 (18)0.0328 (13)0.0045 (15)0.0153 (12)0.0126 (12)
O20.0529 (11)0.0516 (10)0.0393 (9)−0.0029 (8)0.0134 (8)0.0083 (8)
C170.0362 (13)0.0388 (13)0.0432 (12)−0.0026 (10)0.0176 (10)0.0089 (10)
C180.0373 (13)0.0388 (13)0.0461 (13)−0.0051 (10)0.0116 (11)0.0044 (10)
C190.0443 (16)0.072 (2)0.071 (2)0.0068 (14)0.0087 (14)0.0062 (16)
C200.0531 (19)0.074 (2)0.075 (2)−0.0040 (17)−0.0146 (16)0.0171 (17)
C210.070 (2)0.0564 (18)0.0466 (16)−0.0170 (16)−0.0038 (14)0.0111 (13)
O30.0532 (11)0.0541 (11)0.0432 (10)−0.0020 (9)0.0109 (8)0.0085 (8)
OW—HO10.844 (10)C9'—C10'1.432 (18)
OW—HO20.847 (10)C9'—H9'0.95
C1—C21.391 (3)C10'—C11'1.297 (19)
C1—N21.397 (3)C10'—H10'0.95
C1—C61.397 (3)C11'—O1'1.388 (17)
C2—C31.395 (3)C11'—H11'0.95
C2—N11.398 (3)C12—C131.489 (3)
C3—C41.384 (3)C12—H12A0.99
C3—H30.95C12—H12B0.99
C4—C51.410 (4)C13—C141.345 (3)
C4—H40.95C13—O21.383 (3)
C5—C61.373 (3)C14—C151.429 (4)
C5—H50.95C14—H140.95
C6—H60.95C15—C161.338 (4)
N1—C71.347 (3)C15—H150.95
N1—C121.483 (3)C16—O21.365 (3)
C7—N21.352 (3)C16—H160.95
C7—C81.449 (3)C17—C181.486 (3)
N2—C171.482 (3)C17—H17A0.99
C8—O1'1.341 (15)C17—H17B0.99
C8—C91.357 (4)C18—C191.333 (4)
C8—C9'1.358 (18)C18—O31.373 (3)
C8—O11.366 (4)C19—C201.439 (5)
C9—C101.444 (5)C19—H190.95
C9—H90.95C20—C211.322 (5)
C10—C111.290 (5)C20—H200.95
C10—H100.95C21—O31.369 (3)
C11—O11.371 (4)C21—H210.95
C11—H110.95
HO1—OW—HO2103 (2)C8—C9'—H9'130.8
C2—C1—N2106.81 (18)C10'—C9'—H9'130.8
C2—C1—C6121.7 (2)C11'—C10'—C9'109 (4)
N2—C1—C6131.4 (2)C11'—C10'—H10'125.5
C1—C2—C3122.2 (2)C9'—C10'—H10'125.5
C1—C2—N1106.73 (18)C10'—C11'—O1'114 (3)
C3—C2—N1131.0 (2)C10'—C11'—H11'122.8
C4—C3—C2115.7 (2)O1'—C11'—H11'122.8
C4—C3—H3122.1C8—O1'—C11'97.6 (17)
C2—C3—H3122.1N1—C12—C13110.44 (17)
C3—C4—C5122.0 (2)N1—C12—H12A109.6
C3—C4—H4119.0C13—C12—H12A109.6
C5—C4—H4119.0N1—C12—H12B109.6
C6—C5—C4122.0 (2)C13—C12—H12B109.6
C6—C5—H5119.0H12A—C12—H12B108.1
C4—C5—H5119.0C14—C13—O2110.3 (2)
C5—C6—C1116.3 (2)C14—C13—C12133.2 (2)
C5—C6—H6121.8O2—C13—C12116.5 (2)
C1—C6—H6121.8C13—C14—C15106.2 (2)
C7—N1—C2108.79 (17)C13—C14—H14126.9
C7—N1—C12126.83 (18)C15—C14—H14126.9
C2—N1—C12123.78 (18)C16—C15—C14106.9 (2)
N1—C7—N2109.02 (18)C16—C15—H15126.6
N1—C7—C8125.66 (19)C14—C15—H15126.6
N2—C7—C8125.32 (19)C15—C16—O2110.8 (2)
C7—N2—C1108.65 (17)C15—C16—H16124.6
C7—N2—C17127.40 (18)O2—C16—H16124.6
C1—N2—C17123.92 (18)C16—O2—C13105.8 (2)
O1'—C8—C9109.7 (10)N2—C17—C18111.56 (18)
O1'—C8—C9'120 (2)N2—C17—H17A109.3
C9—C8—O1109.0 (4)C18—C17—H17A109.3
C9'—C8—O1116 (2)N2—C17—H17B109.3
O1'—C8—C7112.0 (9)C18—C17—H17B109.3
C9—C8—C7133.6 (4)H17A—C17—H17B108.0
C9'—C8—C7126 (2)C19—C18—O3109.8 (2)
O1—C8—C7117.5 (2)C19—C18—C17133.6 (3)
C8—C9—C10105.8 (5)O3—C18—C17116.7 (2)
C8—C9—H9127.1C18—C19—C20106.6 (3)
C10—C9—H9127.1C18—C19—H19126.7
C11—C10—C9107.3 (6)C20—C19—H19126.7
C11—C10—H10126.3C21—C20—C19106.7 (3)
C9—C10—H10126.3C21—C20—H20126.6
C10—C11—O1111.1 (5)C19—C20—H20126.6
C10—C11—H11124.5C20—C21—O3110.3 (3)
O1—C11—H11124.4C20—C21—H21124.9
C8—O1—C11106.8 (3)O3—C21—H21124.9
C8—C9'—C10'98 (3)C21—O3—C18106.7 (2)
N2—C1—C2—C3179.89 (18)C9—C10—C11—O1−0.7 (6)
C6—C1—C2—C31.0 (3)O1'—C8—O1—C1196 (2)
N2—C1—C2—N10.3 (2)C9—C8—O1—C11−0.3 (4)
C6—C1—C2—N1−178.61 (18)C9'—C8—O1—C11−11 (2)
C1—C2—C3—C4−0.1 (3)C7—C8—O1—C11178.9 (3)
N1—C2—C3—C4179.42 (19)C10—C11—O1—C80.6 (5)
C2—C3—C4—C5−0.7 (3)O1'—C8—C9'—C10'−4 (2)
C3—C4—C5—C60.7 (3)C9—C8—C9'—C10'−33 (9)
C4—C5—C6—C10.2 (3)O1—C8—C9'—C10'24 (2)
C2—C1—C6—C5−1.0 (3)C7—C8—C9'—C10'−166.6 (15)
N2—C1—C6—C5−179.6 (2)C8—C9'—C10'—C11'−1 (2)
C1—C2—N1—C7−0.6 (2)C9'—C10'—C11'—O1'5 (3)
C3—C2—N1—C7179.8 (2)C9—C8—O1'—C11'12.4 (16)
C1—C2—N1—C12−172.23 (17)C9'—C8—O1'—C11'6 (2)
C3—C2—N1—C128.2 (3)O1—C8—O1'—C11'−80 (2)
C2—N1—C7—N20.7 (2)C7—C8—O1'—C11'171.4 (13)
C12—N1—C7—N2172.00 (17)C10'—C11'—O1'—C8−7 (3)
C2—N1—C7—C8−179.78 (18)C7—N1—C12—C13−92.9 (2)
C12—N1—C7—C8−8.5 (3)C2—N1—C12—C1377.2 (2)
N1—C7—N2—C1−0.5 (2)N1—C12—C13—C14−124.4 (3)
C8—C7—N2—C1179.96 (18)N1—C12—C13—O257.0 (3)
N1—C7—N2—C17177.42 (17)O2—C13—C14—C150.5 (3)
C8—C7—N2—C17−2.1 (3)C12—C13—C14—C15−178.2 (3)
C2—C1—N2—C70.1 (2)C13—C14—C15—C16−1.4 (3)
C6—C1—N2—C7178.9 (2)C14—C15—C16—O21.8 (4)
C2—C1—N2—C17−177.90 (17)C15—C16—O2—C13−1.5 (3)
C6—C1—N2—C170.9 (3)C14—C13—O2—C160.6 (3)
N1—C7—C8—O1'−17.5 (16)C12—C13—O2—C16179.5 (2)
N2—C7—C8—O1'161.9 (15)C7—N2—C17—C18105.0 (2)
N1—C7—C8—C9134.8 (4)C1—N2—C17—C18−77.4 (2)
N2—C7—C8—C9−45.8 (5)N2—C17—C18—C19108.4 (3)
N1—C7—C8—C9'147 (2)N2—C17—C18—O3−71.7 (3)
N2—C7—C8—C9'−34 (2)O3—C18—C19—C200.2 (3)
N1—C7—C8—O1−44.2 (5)C17—C18—C19—C20−180.0 (3)
N2—C7—C8—O1135.2 (5)C18—C19—C20—C21−0.4 (4)
O1'—C8—C9—C10−26.4 (14)C19—C20—C21—O30.4 (4)
C9'—C8—C9—C10127 (10)C20—C21—O3—C18−0.3 (3)
O1—C8—C9—C10−0.1 (4)C19—C18—O3—C210.1 (3)
C7—C8—C9—C10−179.1 (4)C17—C18—O3—C21−179.8 (2)
C8—C9—C10—C110.5 (5)
D—H···AD—HH···AD···AD—H···A
OW—HO2···Cl10.85 (1)2.35 (1)3.189 (2)174 (5)
OW—HO1···Cl1i0.84 (1)2.34 (1)3.183 (2)176 (4)
C9—H9···O30.952.493.278 (7)141
C12—H12A···Cl1ii0.992.773.694 (2)155
C12—H12B···O10.992.393.098 (6)127
C17—H17B···Cl10.992.613.594 (2)176
C21—H21···OWiii0.952.293.168 (4)153
C15—H15···O3iv0.952.623.436 (3)143
C15—H15···C18iv0.952.853.788 (4)170
C15—H15···C21iv0.952.873.498 (4)124
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯A D—HH⋯A DA D—H⋯A
OW—HO2⋯Cl10.85 (1)2.35 (1)3.189 (2)174 (5)
OW—HO1⋯Cl1i 0.84 (1)2.34 (1)3.183 (2)176 (4)
C9—H9⋯O30.952.493.278 (7)141
C12—H12A⋯Cl1ii 0.992.773.694 (2)155
C12—H12B⋯O10.992.393.098 (6)127
C17—H17B⋯Cl10.992.613.594 (2)176
C21—H21⋯OW iii 0.952.293.168 (4)153
C15—H15⋯O3iv 0.952.623.436 (3)143
C15—H15⋯C18iv 0.952.853.788 (4)170
C15—H15⋯C21iv 0.952.873.498 (4)124

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) .

  12 in total

1.  A versatile synthesis of substituted benzimidazolium salts by an amination/ring closure sequence.

Authors:  F M Rivas; U Riaz; A Giessert; J A Smulik; S T Diver
Journal:  Org Lett       Date:  2001-08-23       Impact factor: 6.005

2.  Aromatic amination/imination approach to chiral benzimidazoles.

Authors:  Felix M Rivas; Anthony J Giessert; Steven T Diver
Journal:  J Org Chem       Date:  2002-03-08       Impact factor: 4.354

3.  Benzimidazolium Triflate as an Efficient Promoter for Nucleotide Synthesis via the Phosphoramidite Method.

Authors:  Yoshihiro Hayakawa; Masanori Kataoka; Ryoji Noyori
Journal:  J Org Chem       Date:  1996-11-15       Impact factor: 4.354

4.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

5.  Combinatorial synthesis of benzimidazolium dyes and its diversity directed application toward GTP-selective fluorescent chemosensors.

Authors:  Shenliang Wang; Young-Tae Chang
Journal:  J Am Chem Soc       Date:  2006-08-16       Impact factor: 15.419

6.  1,3-Difurfurylbenzimidazolium chloride monohydrate.

Authors:  Mehmet Akkurt; Nihat Sireci; Selma Deniz; Hasan Küçükbay; Orhan Büyükgüngör
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2009-07-29

7.  Halogenoalkyl isocyanates as bifunctional reagents in an Aza-Wittig/heterocyclization reaction on the solid phase: efficient entry into new tetracyclic benzimidazole systems.

Authors:  Cornelia E Hoesl; Adel Nefzi; Richard A Houghten
Journal:  J Comb Chem       Date:  2004 Mar-Apr

8.  1,3-Diallyl-2-methyl-benzimidazolium bromide dihydrate.

Authors:  Hamid Ennajih; Rachid Bouhfid; Hafid Zouihri; El Mokhtar Essassi; Seik Weng Ng
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2009-09-05

9.  1-Cyclo-hexyl-methyl-3-methyl-2-[(phenyl-imino)(sulfido)meth-yl]benzimidazolium.

Authors:  Mehmet Akkurt; Selvi Karaca; Hasan Küçükbay; Nihat Sireci; Orhan Büyükgüngör
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2008-04-10

10.  1,3-Dibenzyl-2-methyl-benzimidazolium chloride.

Authors:  Hamid Ennajih; Rachid Bouhfid; Hafid Zouihri; El Mokhtar Essassi; Seik Weng Ng
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2010-01-27
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