3-Bromotetrazine: labelling of macromolecules via monosubstituted bifunctional s-tetrazines
Schnell, Simon D.; Hoff, Lukas V.; Panchagnula, Advaita; Wurzenberger, Maximilian H. H.; Klapötke, Thomas M.; Sieber, Simon; Linden, Anthony; Gademann, Karl; Chemical Science 11 (2020) 3042–3047; doi:10.1039/C9SC06169J

data_1557294
_publ_section_title
;
 3-Bromotetrazine: labelling of macromolecules via monosubstituted
 bifunctional s-tetrazines
;
_journal_issue                   11
_journal_name_full               'Chemical Science'
_journal_page_first              3042
_journal_page_last               3047
_journal_paper_doi               10.1039/C9SC06169J
_journal_volume                  11
_journal_year                    2020
_chemical_formula_moiety         'C2 H Br N4'
_chemical_formula_sum            'C2 H Br N4'
_chemical_formula_weight         160.98
_chemical_melting_point          344
_chemical_name_systematic        3-bromotetrazine
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/1
_audit_update_record
;
2019-10-11 deposited with the CCDC.	2020-02-10 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   12.7468(5)
_cell_length_b                   5.60166(19)
_cell_length_c                   12.9507(4)
_cell_measurement_reflns_used    2980
_cell_measurement_temperature    160(2)
_cell_measurement_theta_max      73.5270
_cell_measurement_theta_min      3.3990
_cell_volume                     924.72(6)
_computing_cell_refinement
'CrysAlisPro, Version 1.171.38.46 (Rigaku Oxford Diffraction, 2017)'
_computing_data_collection
'CrysAlisPro, Version 1.171.38.46 (Rigaku Oxford Diffraction, 2017)'
_computing_data_reduction
'CrysAlisPro, Version 1.171.38.46 (Rigaku Oxford Diffraction, 2017)'
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
_computing_publication_material  'SHELXL-2018 and PLATON (Spek, 2015)'
_computing_structure_refinement  'SHELXL-2018 (Sheldrick, 2015b)'
_computing_structure_solution    'SHELXT-2014 (Sheldrick, 2015a)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      160(2)
_diffrn_detector                 'CCD area detector'
_diffrn_detector_area_resol_mean 10.3801
_diffrn_detector_type            'Atlas CCD area detector on \k goniostat'
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device       'four-circle \k-geometry diffractometer'
_diffrn_measurement_device_type
'Oxford Diffraction SuperNova, dual radiation diffractometer'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0241
_diffrn_reflns_av_unetI/netI     0.0133
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.987
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            4719
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.987
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         73.945
_diffrn_reflns_theta_min         6.838
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Cu) X-ray source'
_exptl_absorpt_coefficient_mu    10.963
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.481
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
Numerical absorption correction based on gaussian integration over
a multifaceted crystal model 
plus an empirical absorption correction using spherical harmonics, 
implemented in the SCALE3 ABSPACK scaling algorithm.
CrysAlisPro, Version 1.171.38.46 (Rigaku Oxford Diffraction, 2015)
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    2.313
_exptl_crystal_description       plate
_exptl_crystal_F_000             608
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent'
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.324
_refine_diff_density_min         -0.434
_refine_diff_density_rms         0.067
_refine_ls_extinction_coef       0.00063(9)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018 (Sheldrick, 2015b)'
_refine_ls_goodness_of_fit_ref   1.101
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     65
_refine_ls_number_reflns         926
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.101
_refine_ls_R_factor_all          0.0189
_refine_ls_R_factor_gt           0.0185
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0285P)^2^+0.4717P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0512
_refine_ls_wR_factor_ref         0.0516
_reflns_Friedel_coverage         0.000
_reflns_number_gt                904
_reflns_number_total             926
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9sc06169j2.cif
_cod_data_source_block           2
_cod_depositor_comments
;Adding full bibliography for 1557290--1557295.cif.

 Adding full bibliography for 1557290--1557295.cif.
;
_cod_database_code               1557294
_shelx_shelxl_version_number     2018/1
_oxdiff_exptl_absorpt_empirical_full_min 0.742
_oxdiff_exptl_absorpt_empirical_full_max 1.469
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_shelx_res_checksum              50521