Observation of a Non-Conventional Horner-Wadsworth-Emmons Olefination Product and the Effect of the Lateral Ethyl Substitution on its Solid State Fluorescence
Suresh Das; Shibu Abraham; Riju Davis; Nigam P. Rath; New J.Chem.(Nouv.J.Chim.)  (2004) –; doi:

data_7050377
_publ_section_title
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Observation of a Non-Conventional
Horner-Wadsworth-Emmons Olefination Product and the Effect of the
Lateral Ethyl Substitution on its Solid State Fluorescence
;
_journal_name_full               'New J.Chem.(Nouv.J.Chim.)'
_journal_year                    2004
_chemical_formula_sum            'C21 H22 N2'
_chemical_formula_weight         302.41
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   16.1420(3)
_cell_length_b                   18.9857(4)
_cell_length_c                   11.1379(2)
_cell_measurement_reflns_used    6045
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      26.75
_cell_measurement_theta_min      2.47
_cell_volume                     3413.40(11)
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean ?
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.079
_diffrn_reflns_av_sigmaI/netI    0.0837
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            51849
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.12
_diffrn_standards_decay_%        ?
_diffrn_standards_interval_count ?
_diffrn_standards_interval_time  ?
_diffrn_standards_number         ?
_exptl_absorpt_coefficient_mu    0.069
_exptl_absorpt_correction_T_max  0.9890
_exptl_absorpt_correction_T_min  0.9836
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   ?
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.177
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             1296
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.16
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   7(4)
_refine_ls_extinction_coef       ?
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.971
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     415
_refine_ls_number_reflns         6697
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_refine_ls_restrained_S_all      0.971
_refine_ls_R_factor_all          0.1577
_refine_ls_R_factor_gt           0.0609
_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^)+(0.0740P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1277
_refine_ls_wR_factor_ref         0.1658
_reflns_number_gt                3064
_reflns_number_total             6697
_reflns_threshold_expression     >2sigma(I)
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'no' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_database_code               7050377