Synthesis of co-ordination networks selecting from either (<i>R,R</i>), (<i>S,S</i>) and (<i>R,S</i>)-1,4- or -1,3-bis[2-(4-pyridyl)-2-methylethyl]benzene and a discrete complex from 1,4-bis[2-(3-pyridyl)-2-methyl-<i>cis</i>-ethenyl)]benzene
M. John Plater; Thomas Gelbrich; Michael B. Hursthouse; Ben M. De Silva; CrystEngComm 8 (2006) 895–; doi:10.1039/b609740e

data_7203573
_publ_section_title
;
 Synthesis of co-ordination networks selecting from either
 (<i>R,R</i>), (<i>S,S</i>) and (<i>R,S</i>)-1,4- or
 -1,3-bis[2-(4-pyridyl)-2-methylethyl]benzene and a discrete complex
 from 1,4-bis[2-(3-pyridyl)-2-methyl-<i>cis</i>-ethenyl)]benzene
;
_journal_issue                   12
_journal_name_full               CrystEngComm
_journal_page_first              895
_journal_paper_doi               10.1039/b609740e
_journal_volume                  8
_journal_year                    2006
_chemical_formula_sum            'C22 H20 N2'
_chemical_formula_weight         312.40
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 101.992(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   24.7921(9)
_cell_length_b                   5.9555(2)
_cell_length_c                   11.8649(3)
_cell_measurement_temperature    120(2)
_cell_volume                     1713.61(10)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Bruker-Nonius 95mm CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1214
_diffrn_reflns_av_sigmaI/netI    0.0751
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            14219
_diffrn_reflns_theta_full        25.25
_diffrn_reflns_theta_max         25.25
_diffrn_reflns_theta_min         3.36
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_T_max  0.9950
_exptl_absorpt_correction_T_min  0.9653
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS V2.10 (Sheldrick, G.M., 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.211
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.237
_refine_diff_density_min         -0.327
_refine_diff_density_rms         0.069
_refine_ls_extinction_coef       0.028(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.075
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     238
_refine_ls_number_reflns         3055
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0973
_refine_ls_R_factor_gt           0.0787
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0084P)^2^+3.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1487
_refine_ls_wR_factor_ref         0.1558
_reflns_number_gt                2500
_reflns_number_total             3055
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b609740e.txt
_cod_data_source_block           s92_c
_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 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7203573