Four Methyl Azolyl-3-propenoates
Blake, Alexander J.; McNab, Hamish; Thornley, Craig; Acta Crystallographica Section C 53 (1997) 1093–1097; doi:10.1107/S0108270197004952

data_2006393
_publ_section_title
;
 Four Methyl Azolyl-3-propenoates
;
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1093
_journal_page_last               1097
_journal_paper_doi               10.1107/S0108270197004952
_journal_volume                  53
_journal_year                    1997
_chemical_formula_moiety         'C7 H8 N2 O2'
_chemical_formula_sum            'C7 H8 N2 O2'
_chemical_formula_weight         152.15
_chemical_name_systematic
;
methyl (E)-3-(imidazol-2-yl)propenoate
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   9.706(2)
_cell_length_b                   8.9898(9)
_cell_length_c                   17.714(3)
_cell_measurement_reflns_used    30
_cell_measurement_temperature    277(2)
_cell_measurement_theta_max      14
_cell_measurement_theta_min      13
_cell_volume                     1545.6(4)
_computing_cell_refinement       DIF4
_computing_data_collection       'DIF4 (Stoe & Cie, 1991a)'
_computing_data_reduction        'REDU4 (Stoe & Cie, 1991b)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1994)'
_computing_publication_material  SHELXL-96
_computing_structure_refinement  'SHELXL-96 (Sheldrick, 1996)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      277(2)
_diffrn_measurement_device
;
Stoe Stadi-4 four-circle with Oxford Cryosystems open-flow cryostat
(Cosier & Glazer, 1986).
;
_diffrn_measurement_method       \w-2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0371
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_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       0
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_diffrn_reflns_limit_l_min       -21
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_diffrn_reflns_theta_min         3.11
_diffrn_standards_decay_%        none
_diffrn_standards_interval_time  120
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.308
_exptl_crystal_density_meas      ?
_exptl_crystal_description       plate
_exptl_crystal_F_000             640
_exptl_crystal_size_max          0.68
_exptl_crystal_size_mid          0.54
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.16
_refine_diff_density_min         -0.15
_refine_ls_extinction_coef       0.0054(11)
_refine_ls_extinction_method     'SHELXL96 (Sheldrick, 1996)'
_refine_ls_goodness_of_fit_all   1.108
_refine_ls_goodness_of_fit_obs   1.095
_refine_ls_hydrogen_treatment
;
H atoms riding, except for H1 (bound to N1) which was refined freely
;
_refine_ls_matrix_type           full
_refine_ls_number_parameters     104
_refine_ls_number_reflns         1365
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.108
_refine_ls_restrained_S_obs      1.095
_refine_ls_R_factor_all          0.1105
_refine_ls_R_factor_obs          .0438
_refine_ls_shift/esd_max         0.001
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.035P)^2^+1.04P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1366
_refine_ls_wR_factor_obs         .0969
_reflns_number_observed          747
_reflns_number_total             1365
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ha1192.cif
_cod_data_source_block           4
_cod_depositor_comments
;
The following automatic conversions were performed:
'_geom_bond_publ_flag' value 'Yes' changed to 'yes' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (11 times).

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 'not measured' 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 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w =
1/[\s^2^(Fo^2^)+(0.035P)^2^+1.04P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to 'w =
1/[\s^2^(Fo^2^)+(0.035P)^2^+1.04P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
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_cod_database_code               2006393