Pyrrolyl-, 2-(2-thienyl)pyrrolyl- and 2,5-bis(2-thienyl)pyrrolyl-nucleosides: synthesis, molecular and electronic structure, and redox behaviour of C5-thymidine derivatives.
Galindo, Miguel A.; Hannant, Jennifer; Harrington, Ross W.; Clegg, William; Horrocks, Benjamin R.; Pike, Andrew R.; Houlton, Andrew; Organic & biomolecular chemistry 9 (2011) 1555–1564; doi:10.1039/C0OB00466A

data_7151641
_publ_section_title
;
 Pyrrolyl-, 2-(2-thienyl)pyrrolyl- and
 2,5-bis(2-thienyl)pyrrolyl-nucleosides: synthesis, molecular and
 electronic structure, and redox behaviour of C5-thymidine derivatives.
;
_journal_issue                   5
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              1555
_journal_page_last               1564
_journal_paper_doi               10.1039/C0OB00466A
_journal_volume                  9
_journal_year                    2011
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C22 H23 N3 O5 S'
_chemical_formula_sum            'C22 H23 N3 O5 S'
_chemical_formula_weight         441.49
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 95.369(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.0959(4)
_cell_length_b                   5.7246(3)
_cell_length_c                   22.4170(9)
_cell_measurement_reflns_used    2981
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      66.55
_cell_measurement_theta_min      1.98
_cell_volume                     1034.38(9)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
;
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL and local programs'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 10.3968
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type
'Oxford Diffraction Gemini A Ultra diffractometer'
_diffrn_measurement_method       'thick-slice \w scans'
_diffrn_radiation_monochromator  none
_diffrn_radiation_source         'sealed tube with Enhance Ultra optics'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.1127
_diffrn_reflns_av_sigmaI/netI    0.0974
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            10720
_diffrn_reflns_theta_full        67.16
_diffrn_reflns_theta_max         67.16
_diffrn_reflns_theta_min         1.98
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.741
_exptl_absorpt_correction_T_max  0.998
_exptl_absorpt_correction_T_min  0.918
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.418
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             464
_exptl_crystal_size_max          0.05
_exptl_crystal_size_mid          0.001
_exptl_crystal_size_min          0.001
_refine_diff_density_max         0.334
_refine_diff_density_min         -0.319
_refine_diff_density_rms         0.061
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.07(4)
_refine_ls_extinction_coef       0.0017(7)
_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   0.978
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     310
_refine_ls_number_reflns         3529
_refine_ls_number_restraints     110
_refine_ls_restrained_S_all      0.964
_refine_ls_R_factor_all          0.0903
_refine_ls_R_factor_gt           0.0578
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0779P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1278
_refine_ls_wR_factor_ref         0.1445
_reflns_number_gt                2567
_reflns_number_total             3529
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            C0OB00466A.TXT
_cod_data_source_block           ah145_compound_9b
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7151641