Hydrazone Switch-Based Negative Feedback Loop.
Pramanik, Susnata; Aprahamian, Ivan; Journal of the American Chemical Society 138 (2016) 15142–15145; doi:10.1021/jacs.6b10542

data_4131177
_publ_section_title
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 Hydrazone Switch-Based Negative Feedback Loop.
;
_journal_issue                   46
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15142
_journal_page_last               15145
_journal_paper_doi               10.1021/jacs.6b10542
_journal_volume                  138
_journal_year                    2016
_chemical_formula_moiety         'C21 H22 N4 O'
_chemical_formula_sum            'C21 H22 N4 O'
_chemical_formula_weight         346.42
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_date             2015-12-21
_audit_creation_method
;
Olex2 1.2-alpha
(compiled 2015.11.10 svn.r3248 for OlexSys, GUI svn.r5133)
;
_cell_angle_alpha                90
_cell_angle_beta                 112.9652(16)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.3030(19)
_cell_length_b                   10.8081(15)
_cell_length_c                   13.6576(19)
_cell_measurement_reflns_used    4630
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.25
_cell_measurement_theta_min      2.48
_cell_volume                     1808.1(4)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_collection       'COSMO (BRUKER, V1.61, 2009)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 8.36
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0405
_diffrn_reflns_av_unetI/netI     0.0346
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            14635
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.372
_diffrn_reflns_theta_min         1.813
_diffrn_source                   'sealed tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_T_max  0.7452
_exptl_absorpt_correction_T_min  0.6816
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction. wR2(int) was 0.0993 before and 0.0519 after correction. The Ratio of minimum to maximum transmission is 0.9147. The \l/2 correction factor is 0.00150.'
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.273
_exptl_crystal_description       chunk
_exptl_crystal_F_000             736
_exptl_crystal_recrystallization_method 'used as received'
_exptl_crystal_size_max          0.261
_exptl_crystal_size_mid          0.185
_exptl_crystal_size_min          0.154
_refine_diff_density_max         0.288
_refine_diff_density_min         -0.176
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.065
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     241
_refine_ls_number_reflns         3302
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0714
_refine_ls_R_factor_gt           0.0492
_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^)+(0.0900P)^2^+0.0914P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1341
_refine_ls_wR_factor_ref         0.1562
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2326
_reflns_number_total             3302
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja6b10542_si_003.cif
_cod_data_source_block           ia1215a
_cod_database_code               4131177
_shelxl_version_number           2014/6
_shelx_estimated_absorpt_t_max   0.988
_shelx_estimated_absorpt_t_min   0.979
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C12(H12A,H12B), C13(H13A,H13B), C14(H14A,H14B)
2.b Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C6(H6), C7(H7), C8(H8), C18(H18), C19(H19), C20(H20)
2.c Idealised Me refined as rotating group:
 C15(H15A,H15B,H15C), C21(H21A,H21B,H21C)
;
_contact_crystallographer_email  staples@chemistry.msu.com
_contact_crystallographer_name   'Richard Staples'
_olex2_diffrn_ambient_temperature_device 'Oxford Cryosystems'
_olex2_exptl_crystal_mounting_method
'The crystal was mounted on a nylon loop with paratone oil'
_olex2_submission_original_sample_id SP-006
_olex2_submission_special_instructions 'No special instructions were received'