Controlling the distance between hydrogen-bonded chloro-s-triazine tapes: crystal engineering using N-alkyl chains and the influence of temperature
Aldilla, Vina Rizki; Bhadbhade, Mohan; Bhattacharyya, Saroj; Kumar, Naresh; Rich, Anne M.; Marjo, Christopher; CrystEngComm  (2017) –; doi:10.1039/C7CE01049D

data_7228726
_publ_section_title
;
 Controlling the distance between hydrogen-bonded chloro-s-triazine tapes:
 crystal engineering using N-alkyl chains and the influence of temperature
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/C7CE01049D
_journal_year                    2017
_chemical_formula_moiety         'C8 H12 Cl2 N4'
_chemical_formula_sum            'C8 H12 Cl2 N4'
_chemical_formula_weight         235.12
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2017-05-09
_audit_creation_method
;
Olex2 1.2
(compiled 2017.03.28 svn.r3405 for OlexSys, GUI svn.r5335)
;
_audit_update_record
;
2017-05-29 deposited with the CCDC.
2017-07-21 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 115.30(3)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   25.548(5)
_cell_length_b                   5.0000(10)
_cell_length_c                   19.343(4)
_cell_measurement_reflns_used    2289
_cell_measurement_temperature    100
_cell_measurement_theta_max      22.5
_cell_measurement_theta_min      2.5
_cell_volume                     2233.9(10)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.939
_diffrn_measured_fraction_theta_max 0.939
_diffrn_measurement_device_type  'Australian Synchrotron'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0220
_diffrn_reflns_av_unetI/netI     0.0126
_diffrn_reflns_Laue_measured_fraction_full 0.939
_diffrn_reflns_Laue_measured_fraction_max 0.939
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            12722
_diffrn_reflns_point_group_measured_fraction_full 0.939
_diffrn_reflns_point_group_measured_fraction_max 0.939
_diffrn_reflns_theta_full        24.991
_diffrn_reflns_theta_max         24.991
_diffrn_reflns_theta_min         3.294
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.549
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.398
_exptl_crystal_description       plate
_exptl_crystal_F_000             976
_exptl_crystal_size_max          0.02
_exptl_crystal_size_mid          0.015
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.254
_refine_diff_density_min         -0.399
_refine_diff_density_rms         0.062
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.117
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     128
_refine_ls_number_reflns         1841
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.117
_refine_ls_R_factor_all          0.0417
_refine_ls_R_factor_gt           0.0380
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0495P)^2^+3.5860P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0937
_refine_ls_wR_factor_ref         0.0963
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1673
_reflns_number_total             1841
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7ce01049d2.cif
_cod_data_source_block           bm11_a
_cod_original_cell_volume        2233.8(9)
_cod_database_code               7228726
_shelx_shelxl_version_number     2014/7
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H,H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C4(H4A,H4B), C5(H5A,H5B), C6(H6A,H6B), C7(H7A,H7B)
2.b Aromatic/amide H refined with riding coordinates:
 N4(H4)
2.c Idealised Me refined as rotating group:
 C8(H8A,H8B,H8C)
;
_olex2_submission_special_instructions 'No special instructions were received'