Valeriadimers A-C, three sesquiterpenoid dimers from Valeriana officinalis var. latifolia
Han, Zhu-zhen; Ye, Ji; Liu, Qing-Xin; Shen, Yunheng; yue, rongcai; Li, Hui-Liang; Zhang, Weidong; RSC Adv.  (2014) –; doi:10.1039/C4RA11439F

data_7219080
_publ_section_title
;
 Valeriadimers A-C, three sesquiterpenoid dimers from Valeriana
 officinalis var. latifolia
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C4RA11439F
_journal_year                    2014
_chemical_absolute_configuration ad
_chemical_formula_sum            'C28 H42 O2'
_chemical_formula_weight         410.62
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2013-03-07 deposited with the CCDC.
2014-12-08 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                   8.5312(2)
_cell_length_b                   11.5963(2)
_cell_length_c                   24.0459(5)
_cell_measurement_reflns_used    9885
_cell_measurement_temperature    140(2)
_cell_measurement_theta_max      69.30
_cell_measurement_theta_min      5.18
_cell_volume                     2378.87(9)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      140(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0379
_diffrn_reflns_av_sigmaI/netI    0.0277
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            18693
_diffrn_reflns_theta_full        69.65
_diffrn_reflns_theta_max         69.65
_diffrn_reflns_theta_min         4.23
_exptl_absorpt_coefficient_mu    0.530
_exptl_absorpt_correction_T_max  0.9343
_exptl_absorpt_correction_T_min  0.8658
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.147
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             904
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.204
_refine_diff_density_min         -0.213
_refine_diff_density_rms         0.044
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(18)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.086
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     277
_refine_ls_number_reflns         4410
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.086
_refine_ls_R_factor_all          0.0353
_refine_ls_R_factor_gt           0.0350
_refine_ls_shift/su_max          0.019
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0935P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1078
_refine_ls_wR_factor_ref         0.1085
_reflns_number_gt                4357
_reflns_number_total             4410
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ra11439f2.cif
_cod_data_source_block           cu_dm13056_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2935 2014-11-11 08:27:57Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7219080