Uniaxial negative thermal expansion induced by moiety twisting in an organic crystal
Das, Dinabandhu; Barbour, Leonard J.; CrystEngComm 20 (2018) 5123–; doi:10.1039/C8CE01169A

data_7231336
_publ_section_title
;
 Uniaxial negative thermal expansion induced by moiety twisting in an
 organic crystal
;
_journal_issue                   35
_journal_name_full               CrystEngComm
_journal_page_first              5123
_journal_paper_doi               10.1039/C8CE01169A
_journal_volume                  20
_journal_year                    2018
_chemical_formula_moiety         'C14 H18 O2'
_chemical_formula_sum            'C14 H18 O2'
_chemical_formula_weight         218.28
_chemical_melting_point          406
_chemical_name_systematic
; 
1,4-Bis(1-hydroxycyclopentyl)buta-1,3-diyne 
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-97
_audit_update_record
;
2018-07-12 deposited with the CCDC.
2018-08-07 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 97.5090(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.0442(7)
_cell_length_b                   12.0864(11)
_cell_length_c                   14.7091(14)
_cell_measurement_reflns_used    1924
_cell_measurement_temperature    220(2)
_cell_measurement_theta_max      23.77
_cell_measurement_theta_min      2.19
_cell_volume                     1241.6(2)
_computing_cell_refinement       'Bruker SMART APEX-II'
_computing_data_collection       'Bruker SMART APEX-II'
_computing_data_reduction        'Bruker SAINT '
_computing_molecular_graphics    'XSEED (Barbour 2017)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      220(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.949
_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  0.0227
_diffrn_reflns_av_unetI/netI     0.0270
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.949
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            7063
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.949
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         27.464
_diffrn_reflns_theta_min         2.189
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_T_max  0.9924
_exptl_absorpt_correction_T_min  0.9715
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.168
_exptl_crystal_density_meas      ?
_exptl_crystal_description       block
_exptl_crystal_F_000             472
_exptl_crystal_size_max          0.380
_exptl_crystal_size_mid          0.190
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.289
_refine_diff_density_min         -0.259
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     145
_refine_ls_number_reflns         2695
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.063
_refine_ls_R_factor_all          0.0783
_refine_ls_R_factor_gt           0.0566
_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^)+(0.0719P)^2^+0.4093P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1472
_refine_ls_wR_factor_ref         0.1647
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1929
_reflns_number_total             2695
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8ce01169a3.cif
_cod_data_source_block           1_220K
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '406K' was changed to '406' - the
value should be numeric and without a unit designator.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/home/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.

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 7231324--7231340.cif.
;
_cod_database_code               7231336
_shelx_estimated_absorpt_t_min   0.972
_shelx_estimated_absorpt_t_max   0.992
_shelx_res_checksum              64206