Donor/acceptor chromophores-decorated triazolyl unnatural nucleosides: synthesis, photophysical properties and study of interaction with BSA.
Bag, Subhendu Sekhar; Talukdar, Sangita; Das, Suman Kalyan; Pradhan, Manoj Kumar; Mukherjee, Soumen; Organic & biomolecular chemistry 14 (2016) 5088–5108; doi:10.1039/c6ob00500d

data_7155090
_publ_section_title
;
 Donor/acceptor chromophores-decorated triazolyl unnatural nucleosides:
 synthesis, photophysical properties and study of interaction with BSA.
;
_journal_issue                   22
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              5088
_journal_page_last               5108
_journal_paper_doi               10.1039/c6ob00500d
_journal_volume                  14
_journal_year                    2016
_chemical_absolute_configuration syn
_chemical_formula_moiety         ' C13 H14 N4 O5 '
_chemical_formula_sum            'C13 H14 N4 O5'
_chemical_formula_weight         306.28
_chemical_name_common            triazolyl
_chemical_name_systematic        triazolyl
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2014-04-07 deposited with the CCDC.
2016-04-21 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.4456(7)
_cell_length_b                   9.8102(8)
_cell_length_c                   21.8210(19)
_cell_measurement_temperature    296(2)
_cell_volume                     1379.8(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0822
_diffrn_reflns_av_sigmaI/netI    0.0977
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            15090
_diffrn_reflns_theta_full        28.40
_diffrn_reflns_theta_max         28.40
_diffrn_reflns_theta_min         1.87
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.116
_exptl_absorpt_correction_T_max  0.983
_exptl_absorpt_correction_T_min  0.934
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.474
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             640
_exptl_crystal_recrystallization_method 'slow evaporation'
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.176
_refine_diff_density_min         -0.192
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -3.0(15)
_refine_ls_extinction_coef       0.0156(19)
_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   0.933
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     202
_refine_ls_number_reflns         3180
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.933
_refine_ls_R_factor_all          0.1109
_refine_ls_R_factor_gt           0.0509
_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^)+(0.0442P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0965
_refine_ls_wR_factor_ref         0.1143
_reflns_number_gt                1701
_reflns_number_total             3180
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c6ob00500d2.cif
_cod_data_source_block           SSB_ST_TNBBAc
_cod_depositor_comments
'Adding full bibliography for 7155089--7155090.cif.'
_cod_database_code               7155090