Metal 'turn-off', anion 'turn-on' gelation cascade in pyridinylmethyl ureas.
Offiler, Caroline A.; Jones, Christopher D.; Steed, Jonathan W.; Chemical communications (Cambridge, England) 53 (2017) 2024–2027; doi:10.1039/c6cc09126a

data_7119523
_publ_section_title
;
 Metal 'turn-off', anion 'turn-on' gelation cascade in pyridinylmethyl
 ureas.
;
_journal_issue                   12
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              2024
_journal_page_last               2027
_journal_paper_doi               10.1039/c6cc09126a
_journal_volume                  53
_journal_year                    2017
_chemical_formula_sum            'C26 H26 Cl2 N6 O2 Zn'
_chemical_formula_weight         590.80
_space_group_crystal_system      orthorhombic
_space_group_IT_number           62
_space_group_name_Hall           '-P 2ac 2n'
_space_group_name_H-M_alt        'P n m a'
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2016-11-15 deposited with the CCDC.
2017-01-20 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.4837(7)
_cell_length_b                   23.7851(13)
_cell_length_c                   8.6713(5)
_cell_measurement_reflns_used    3804
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      33.37
_cell_measurement_theta_min      2.849
_cell_volume                     2574.7(3)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.946
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0737
_diffrn_reflns_av_unetI/netI     0.0504
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.946
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       38
_diffrn_reflns_limit_k_min       -36
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            48921
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.946
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         35.608
_diffrn_reflns_theta_min         2.500
_exptl_absorpt_coefficient_mu    1.198
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.607
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.524
_exptl_crystal_description       block
_exptl_crystal_F_000             1216
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent'
_exptl_crystal_size_max          0.611
_exptl_crystal_size_mid          0.249
_exptl_crystal_size_min          0.166
_refine_diff_density_max         0.769
_refine_diff_density_min         -0.514
_refine_diff_density_rms         0.088
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     180
_refine_ls_number_reflns         5717
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.0707
_refine_ls_R_factor_gt           0.0401
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0369P)^2^+1.0271P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0840
_refine_ls_wR_factor_ref         0.0931
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4179
_reflns_number_total             5717
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6cc09126a2.cif
_cod_data_source_block           cozn_a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 

 Adding full bibliography for 7119522--7119523.cif.
;
_cod_database_code               7119523
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.528
_shelx_estimated_absorpt_t_max   0.826
_shelx_res_checksum              45795
_shelx_hkl_checksum              73735