From Competition to Commensuration by Two Major Hydrogen-Bonding Motifs
Long, Sihui; Zhou, Panpan; Parkin, Sean; Li, Tonglei; Crystal Growth & Design 14 (2014) 27–; doi:10.1021/cg401532j

data_4509959
_publ_section_title
;
 From Competition to Commensuration by Two Major Hydrogen-Bonding Motifs
;
_journal_issue                   1
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              27
_journal_paper_doi               10.1021/cg401532j
_journal_volume                  14
_journal_year                    2014
_chemical_formula_moiety         'C16 H18 N2 O2'
_chemical_formula_sum            'C16 H18 N2 O2'
_chemical_formula_weight         270.32
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                105.7668(7)
_cell_angle_beta                 102.7156(7)
_cell_angle_gamma                98.4533(8)
_cell_formula_units_Z            4
_cell_length_a                   11.1175(2)
_cell_length_b                   11.5416(2)
_cell_length_c                   12.2025(2)
_cell_measurement_reflns_used    5874
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.00
_cell_volume                     1433.77(4)
_computing_cell_refinement       'Denzo-SMN (Nonius, 1997)'
_computing_data_collection       'Collect (Nonius, 2002)'
_computing_data_reduction        'Denzo-SMN (Nonius, 1997)'
_computing_molecular_graphics    'XP in SHELXTL (Sheldrick, 1995)'
_computing_publication_material
;
 SHELX-97 (Sheldrick, 1997) and local procedures
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      90(2)
_diffrn_detector_area_resol_mean 18
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Nonius KappaCCD diffractometer'
_diffrn_measurement_method       '\w scans at fixed \c=55\%'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0277
_diffrn_reflns_av_sigmaI/netI    0.0470
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            11103
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.80
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  0.9917
_exptl_absorpt_correction_T_min  0.9674
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Scalepack (Otwinowsky & Minor, 1997)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.252
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             576
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.251
_refine_diff_density_min         -0.247
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     365
_refine_ls_number_reflns         6570
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.0602
_refine_ls_R_factor_gt           0.0421
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0529P)^2^+0.2616P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1010
_refine_ls_wR_factor_ref         0.1108
_reflns_number_gt                5049
_reflns_number_total             6570
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            cg401532j_si_002.cif
_cod_data_source_block           k09136
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4509959