(-)-Cytisine: Access to a stereochemically defined and functionally flexible piperidine scaffold.
Niwetmarin, Worawat; Rego Campello, Hugo; Sparkes, Hazel A.; Aggarwal, Varinder K.; Gallagher, Timothy; Organic & biomolecular chemistry 16 (2018) 5823–5832; doi:10.1039/c8ob01456f

data_7156328
_publ_section_title
;
 (-)-Cytisine: Access to a stereochemically defined and functionally
 flexible piperidine scaffold.
;
_journal_issue                   32
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              5823
_journal_page_last               5832
_journal_paper_doi               10.1039/c8ob01456f
_journal_volume                  16
_journal_year                    2018
_chemical_formula_moiety         'C26 H25 N3 O5'
_chemical_formula_sum            'C26 H25 N3 O5'
_chemical_formula_weight         459.49
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2017-02-24
_audit_creation_method
;
Olex2 1.2
(compiled 2017.02.23 svn.r3390 for OlexSys, GUI svn.r5320)
;
_audit_update_record
;
2018-04-27 deposited with the CCDC.
2018-07-23 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 91.710(5)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.1313(16)
_cell_length_b                   8.764(2)
_cell_length_c                   17.546(4)
_cell_measurement_reflns_used    9863
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      66.79
_cell_measurement_theta_min      5.04
_cell_volume                     1096.1(4)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_reduction        'SAINT v8.37A (Bruker, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution
;
Superflip (Palatinus & Chapuis, 2007;Palatinus & van der Lee, 2008;
Palatinus et al., 2012)
;
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'Bruker Pt135 CCD area detector'
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device       'Bruker Mircostar Rotating anode'
_diffrn_measurement_device_type  'Rotating anode'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0526
_diffrn_reflns_av_unetI/netI     0.0465
_diffrn_reflns_Laue_measured_fraction_full 0.975
_diffrn_reflns_Laue_measured_fraction_max 0.988
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            13480
_diffrn_reflns_point_group_measured_fraction_full 0.963
_diffrn_reflns_point_group_measured_fraction_max 0.976
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         66.789
_diffrn_reflns_theta_min         5.043
_diffrn_source                   'micro-focus rotating anode'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.802
_exptl_absorpt_correction_T_max  0.7528
_exptl_absorpt_correction_T_min  0.3867
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction. wR2(int) was 0.1359 before and 0.0850 after correction. The Ratio of minimum to maximum transmission is 0.5137. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.392
_exptl_crystal_description       plate
_exptl_crystal_F_000             484
_exptl_crystal_size_max          0.576
_exptl_crystal_size_mid          0.422
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.291
_refine_diff_density_min         -0.331
_refine_diff_density_rms         0.075
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         3827
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0517
_refine_ls_R_factor_gt           0.0517
_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^)+(0.1120P)^2^+0.2043P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1368
_refine_ls_wR_factor_ref         0.1368
_reflns_Friedel_coverage         0.845
_reflns_Friedel_fraction_full    0.950
_reflns_Friedel_fraction_max     0.963
_reflns_number_gt                3813
_reflns_number_total             3827
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8ob01456f2.cif
_cod_data_source_block           44
_cod_depositor_comments
'Adding full bibliography for 7156327--7156329.cif.'
_cod_database_code               7156328
_shelxl_version_number           2013-4
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Ternary CH refined with riding coordinates:
 C9(H9), C15(H15), C17(H17)
2.b Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B), C16(H16A,H16B), C18(H18A,H18B), C19(H19A,H19B), C20(H20A,H20B)
2.c Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C5(H5), C6(H6), C11(H11), C12(H12), C13(H13), C22(H22),
 C23(H23), C24(H24), C25(H25), C26(H26)
;
_shelx_res_checksum              54726
_shelx_hkl_checksum              98747
_olex2_submission_special_instructions 'No special instructions were received'