Watson-Crick Base-Pairing Properties of Tricyclo-DNA
Dorte Renneberg; Christian J. Leumann; Journal of the American Chemical Society 124 (2002) 5993–6002; doi:10.1021/ja025569+

data_4114822
_publ_section_title
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 Watson-Crick Base-Pairing Properties of Tricyclo-DNA
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              5993
_journal_page_last               6002
_journal_paper_doi               10.1021/ja025569+
_journal_volume                  124
_journal_year                    2002
_chemical_formula_sum            'C25 H33 N3 O5 Si'
_chemical_formula_weight         483.63
_chemical_name_systematic
; 
 (3'S,5'R)-N4-Benzoyl-1-{5'-O-[(tert-butyl)dimethylsilyl]-2'-deoxy
-3',5'-ethano-5',6'-methano-D-ribofuranosyl}cytidine 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.2225(4)
_cell_length_b                   11.3686(6)
_cell_length_c                   35.120(2)
_cell_measurement_reflns_used    8000
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      25.92
_cell_measurement_theta_min      1.88
_cell_volume                     2484.4(3)
_computing_cell_refinement       'CELL (Stoe & Cie GmbH, Darmstadt, 1997)'
_computing_data_collection       'EXPOSE (Stoe & Cie GmbH, Darmstadt, 1997)'
_computing_data_reduction        'INTEGRATE (Stoe & Cie GmbH, Darmstadt, 1997)'
_computing_molecular_graphics    'PLATON99 (Spek, 1990)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_detector_area_resol_mean 0.81\%A
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'STOE Image Plate Diffraction System'
_diffrn_measurement_method       'phi oscillation'
_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  0.0654
_diffrn_reflns_av_sigmaI/netI    0.0540
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       43
_diffrn_reflns_limit_l_min       -43
_diffrn_reflns_number            16272
_diffrn_reflns_theta_full        25.92
_diffrn_reflns_theta_max         25.92
_diffrn_reflns_theta_min         1.88
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.135
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.293
_exptl_crystal_density_meas      ?
_exptl_crystal_description       rod
_exptl_crystal_F_000             1032
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.544
_refine_diff_density_min         -0.229
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(14)
_refine_ls_extinction_coef       0.0055(15)
_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   1.042
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     440
_refine_ls_number_reflns         4738
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0579
_refine_ls_R_factor_gt           0.0441
_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^)+(0.0595P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0934
_refine_ls_wR_factor_ref         0.0997
_reflns_number_gt                3898
_reflns_number_total             4738
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0255692B_s2_2.cif
_cod_data_source_block           dr-17d
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
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_cod_database_code               4114822