4-Methyl-1,2,4-triazole and 1-Methyltetrazole
Palmer, M. H.; Parsons, S.; Acta Crystallographica Section C 52 (1996) 2818–2822; doi:10.1107/S0108270196008232

data_2005607
_publ_section_title
;
 4-Methyl-1,2,4-triazole and 1-Methyltetrazole
;
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              2818
_journal_page_last               2822
_journal_paper_doi               10.1107/S0108270196008232
_journal_volume                  52
_journal_year                    1996
_chemical_formula_sum            'C2 H4 N4'
_chemical_formula_weight         84.09
_chemical_name_systematic        1-Methyltetrazole
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.578(2)
_cell_length_b                   6.324(2)
_cell_length_c                   10.799(6)
_cell_measurement_reflns_used    32
_cell_measurement_temperature    150.0(2)
_cell_measurement_theta_max      22
_cell_measurement_theta_min      20
_cell_volume                     380.9(3)
_computing_cell_refinement       DIF4
_computing_data_collection       'DIF4 (Stoe & Cie, 1990a)'
_computing_data_reduction        'REDU4 (Stoe & Cie, 1990b)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXTL (Sheldrick, 1995)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150.0(2)
_diffrn_measurement_device
'Stoe Stadi-4 diffractometer with Cryostream cooler (Cosier & Glazer, 1986)'
_diffrn_measurement_method       \w-2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0498
_diffrn_reflns_av_sigmaI/netI    0.0229
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            1774
_diffrn_reflns_theta_max         60.14
_diffrn_reflns_theta_min         8.12
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.918
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.466
_exptl_crystal_density_meas      ?
_exptl_crystal_description       Needle
_exptl_crystal_F_000             176
_exptl_crystal_size_max          0.51
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.199
_refine_diff_density_min         -0.163
_refine_ls_extinction_coef       0.018(3)
_refine_ls_extinction_method     'SHELXTL (Sheldrick, 1995)'
_refine_ls_goodness_of_fit_all   1.138
_refine_ls_goodness_of_fit_obs   1.152
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     48
_refine_ls_number_reflns         314
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.138
_refine_ls_restrained_S_obs      1.152
_refine_ls_R_factor_all          0.0360
_refine_ls_R_factor_obs          0.0353
_refine_ls_shift/esd_max         0.000
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0494P)^2^+0.0791P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0825
_refine_ls_wR_factor_obs         0.0817
_reflns_number_observed          303
_reflns_number_total             314
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            cf1129.cif
_cod_data_source_block           II
_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:

'_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_values 1715 2011-07-08 13:25:40Z adriana 

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^)+(0.0494P)^2^+0.0791P] 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^)+(0.0494P)^2^+0.0791P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               2005607