Pyrroloquinoxaline hydrazones as fluorescent probes for amyloid fibrils.
Gemma, Sandra; Colombo, Laura; Forloni, Gianluigi; Savini, Luisa; Fracasso, Claudia; Caccia, Silvio; Salmona, Mario; Brindisi, Margherita; Joshi, Bhupendra P.; Tripaldi, Pierangela; Giorgi, Gianluca; Taglialatela-Scafati, Orazio; Novellino, Ettore; Fiorini, Isabella; Campiani, Giuseppe; Butini, Stefania; Organic & biomolecular chemistry 9 (2011) 5137–5148; doi:10.1039/c1ob05288h

data_7151928
_publ_section_title
;
 Pyrroloquinoxaline hydrazones as fluorescent probes for amyloid
 fibrils.
;
_journal_issue                   14
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              5137
_journal_page_last               5148
_journal_paper_doi               10.1039/c1ob05288h
_journal_volume                  9
_journal_year                    2011
_chemical_formula_moiety
'C22 H17 N5 O, 0.208(O2), 0.584(O), 0.208(C2)'
_chemical_formula_sum            'C22.42 H17 N5 O2'
_chemical_formula_weight         388.40
_chemical_name_systematic
;
N-(7-Methoxy-5H-pyrrolo[1,2-a]quinoxalin-4-ylidene)-N'-quinolin-4-ylmethylene-
-hydrazine hydrate with methanol
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 102.784(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   24.252(3)
_cell_length_b                   9.3398(11)
_cell_length_c                   17.6282(17)
_cell_measurement_reflns_used    3831
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.10
_cell_measurement_theta_min      2.91
_cell_volume                     3894.0(8)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type
'Bruker-Nonius 95mm CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  '10cm confocal mirrors'
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0888
_diffrn_reflns_av_sigmaI/netI    0.0719
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            19860
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.20
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_type   'area detector absorption correction'
_exptl_absorpt_process_details   'SADABS V2.10 (Sheldrick, G.M., 2003)'
_exptl_crystal_colour            'Pale Orange'
_exptl_crystal_density_diffrn    1.325
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       slab
_exptl_crystal_F_000             1620
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.392
_refine_diff_density_min         -0.304
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.090
_refine_ls_hydrogen_treatment    geom
_refine_ls_matrix_type           full
_refine_ls_number_parameters     291
_refine_ls_number_reflns         3420
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.090
_refine_ls_R_factor_all          0.1469
_refine_ls_R_factor_gt           0.0932
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0917P)^2^+11.4685P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2180
_refine_ls_wR_factor_ref         0.2440
_reflns_number_gt                2147
_reflns_number_total             3420
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1ob05288h.txt
_cod_data_source_block           polymorph2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7151928