Structures of piperazine, piperidine and morpholine
Parkin, Andrew; Oswald, Iain D. H.; Parsons, Simon; Acta Crystallographica Section B 60 (2004) 219–227; doi:10.1107/S0108768104003672

data_2102303
_publ_section_title
;
 Structures of piperazine, piperidine and morpholine
;
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              219
_journal_page_last               227
_journal_paper_doi               10.1107/S0108768104003672
_journal_volume                  60
_journal_year                    2004
_chemical_formula_moiety         ' C4 H10 N2 '
_chemical_formula_sum            'C4 H10 N2'
_chemical_formula_weight         86.14
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           CRYSTALS_ver_12-03-99
_cell_angle_alpha                90
_cell_angle_beta                 108.254(4)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   6.0079(15)
_cell_length_b                   5.1920(13)
_cell_length_c                   8.407(2)
_cell_measurement_reflns_used    874
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      4
_cell_volume                     249.04(11)
_computing_cell_refinement
;
 SAINT (Bruker-AXS, 2002)
;
_computing_data_collection
;
 SMART (Bruker-AXS, 2002)
;
_computing_data_reduction
;
 SAINT (Bruker-AXS, 2002)
;
_computing_molecular_graphics
;
 CAMERON (Watkin et al 1993)
;
_computing_publication_material
;
 CRYSTALS (Watkin et al 2003)
;
_computing_structure_refinement
;
 CRYSTALS (Watkin et al 2003)
;
_computing_structure_solution
;
 SHELXTL (Sheldrick, 1997a)
;
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type
;
Bruker SMART
;
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0108
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -3
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            1431
_diffrn_reflns_theta_full        26.390
_diffrn_reflns_theta_max         26.390
_diffrn_reflns_theta_min         3.682
_diffrn_standards_decay_%        0.00
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.813
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 SADABS (Siemens, 1996)
;
_exptl_crystal_colour            ' colourless '
_exptl_crystal_density_diffrn    1.149
_exptl_crystal_description       ' plate '
_exptl_crystal_F_000             96.000
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.16
_refine_diff_density_min         -0.14
_refine_ls_extinction_coef       15.207
_refine_ls_extinction_method     'Larson 1970 Crystallographic Computing eq 22'
_refine_ls_goodness_of_fit_ref   0.9357
_refine_ls_hydrogen_treatment    noref/refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     32
_refine_ls_number_reflns         511
_refine_ls_R_factor_all          0.0433
_refine_ls_R_factor_gt           0.0359
_refine_ls_shift/su_max          0.000103
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
Method = SHELXL 97 (Sheldrick, 1997)
w = 1/[sigma^2^(F^2^~o~)+(0.05P)^2], where P=1/2max(F^2^~o~,0)
+2/3F~c~^2^
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0867
_refine_ls_wR_factor_gt          0.0853
_refine_ls_wR_factor_ref         0.0867
_reflns_number_gt                413
_reflns_number_total             511
_reflns_threshold_expression     I>2.00u(I)
_cod_data_source_file            av5005.cif
_cod_data_source_block           c4h10n2
_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_enum 1527 2010-12-29 10:47:43Z saulius 

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 

The following automatic conversions were performed:

'_atom_sites_solution_hydrogens' value 'geom/difmap' was changed to
'mixed'.

Automatic conversion script
Id: cif_fix_values 6452 2018-10-05 10:23:21Z andrius 
;
_cod_original_cell_volume        249.05(11)
_cod_original_sg_symbol_H-M      P21/n
_cod_original_formula_sum        ' C4 H10 N2 '
_cod_database_code               2102303
_cod_database_fobs_code          2102303