Polymorphism in 3-methyl-4-methoxy-4′-nitrostilbene (MMONS), a highly active NLO material
Munshi, Parthapratim; Skelton, Brian W.; McKinnon, Joshua J.; Spackman, Mark A.; CrystEngComm 10 (2008) 197–; doi:10.1039/b712869j

data_7201692
_publ_section_title
;
 Polymorphism in 3-methyl-4-methoxy-4&#x2032;-nitrostilbene (MMONS), a
 highly active NLO material
;
_journal_issue                   2
_journal_name_full               CrystEngComm
_journal_page_first              197
_journal_paper_doi               10.1039/b712869j
_journal_volume                  10
_journal_year                    2008
_chemical_absolute_configuration unk
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C16 H15 N1 O3'
_chemical_formula_sum            'C16 H15 N O3'
_chemical_formula_weight         269.29
_chemical_name_systematic
;
?
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      4
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 103.661(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.8890(2)
_cell_length_b                   7.41180(10)
_cell_length_c                   15.6083(2)
_cell_measurement_reflns_used    9021
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.0444
_cell_measurement_theta_min      2.6675
_cell_measurement_wavelength     0.71073
_cell_volume                     1336.48(4)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.8 (release 12-01-2007 CrysAlis171 .NET)
(compiled Jan 12 2007,17:49:11)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.31.8 (release 12-01-2007 CrysAlis171 .NET)
(compiled Jan 12 2007,17:49:11)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.8 (release 12-01-2007 CrysAlis171 .NET)
(compiled Jan 12 2007,17:49:11)
;
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR2004 (Burla et al, 2004)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 16.0009
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type
;
Oxford Diffraction Xcalibur-S diffractometer
;
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0218
_diffrn_reflns_av_unetI/netI     0.0176
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            16957
_diffrn_reflns_theta_full        27.5
_diffrn_reflns_theta_max         27.5
_diffrn_reflns_theta_min         2.69
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.94617
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.8 (release 12-01-2007 CrysAlis171 .NET)
(compiled Jan 12 2007,17:49:11)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.338
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             568
_exptl_crystal_size_max          0.208
_exptl_crystal_size_mid          0.180
_exptl_crystal_size_min          0.068
_refine_diff_density_max         0.263
_refine_diff_density_min         -0.202
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.085
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     352
_refine_ls_number_reflns         3307
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.085
_refine_ls_R_factor_all          0.0531
_refine_ls_R_factor_gt           0.0430
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0806P)^2^+0.1185P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1193
_refine_ls_wR_factor_ref         0.1309
_reflns_number_gt                2772
_reflns_number_total             3307
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b712869j.txt
_cod_data_source_block           MMONS-2
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7201692