Negative area compressibility in silver(I) tricyanomethanide.
Hodgson, Sarah A.; Adamson, Jasper; Hunt, Sarah J.; Cliffe, Matthew J.; Cairns, Andrew B.; Thompson, Amber L.; Tucker, Matthew G.; Funnell, Nicholas P.; Goodwin, Andrew L.; Chemical communications (Cambridge, England) 50 (2014) 5264–5266; doi:10.1039/c3cc47032f

data_7115399
_publ_section_title
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 Negative area compressibility in silver(I) tricyanomethanide.
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_journal_issue                   40
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              5264
_journal_page_last               5266
_journal_paper_doi               10.1039/c3cc47032f
_journal_volume                  50
_journal_year                    2014
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C4 Ag1 N3'
_chemical_formula_sum            'C4 Ag N3'
_chemical_formula_weight         197.93
_space_group_IT_number           46
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'I 2 -2a'
_symmetry_space_group_name_H-M   'I m a 2'
_atom_sites_solution_hydrogens   none
_atom_sites_solution_primary     direct
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.0121(13)
_cell_length_b                   9.646(6)
_cell_length_c                   6.2169(15)
_cell_measurement_reflns_used    507
_cell_measurement_temperature    293
_cell_measurement_theta_max      25
_cell_measurement_theta_min      3
_cell_volume                     480.5(3)
_computing_cell_refinement       'CrysAlis, (Oxford Diffraction, 2002)'
_computing_data_collection       'Gemini, (Oxford Diffraction, 2006)'
_computing_data_reduction        'CrysAlis, (Oxford Diffraction, 2002)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_pressure         830000
_diffrn_ambient_temperature      293
_diffrn_measured_fraction_theta_full 0.587
_diffrn_measured_fraction_theta_max 0.557
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Oxford Diffraction Gemini'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.072
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            500
_diffrn_reflns_theta_full        20.238
_diffrn_reflns_theta_max         24.681
_diffrn_reflns_theta_min         3.305
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.050
_exptl_absorpt_correction_T_max  0.67
_exptl_absorpt_correction_T_min  0.53
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
; 
 Gaussian Integration (Busing and Levy, 1957) 
;
_exptl_crystal_colour            grey
_exptl_crystal_density_diffrn    2.736
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             368
_exptl_crystal_size_max          0.09
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.80
_refine_diff_density_min         -1.29
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.0434
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     24
_refine_ls_number_reflns         215
_refine_ls_number_restraints     14
_refine_ls_R_factor_all          0.0711
_refine_ls_R_factor_gt           0.0581
_refine_ls_shift/su_max          0.0000882
_refine_ls_shift/su_mean         0.0000244
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.00P)^2^ +11.73P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1092
_refine_ls_wR_factor_gt          0.1050
_refine_ls_wR_factor_ref         0.1092
_reflns_limit_h_max              9
_reflns_limit_h_min              0
_reflns_limit_k_max              7
_reflns_limit_k_min              0
_reflns_limit_l_max              6
_reflns_limit_l_min              -6
_reflns_number_gt                186
_reflns_number_total             221
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   3.01
_oxford_diffrn_Wilson_scale      0.26
_oxford_refine_ls_r_factor_ref   0.0711
_oxford_refine_ls_scale          1.94(5)
_oxford_reflns_number_all        215
_oxford_reflns_threshold_expression_ref I>-3.0\s(I)
_cod_data_source_file            c3cc47032f.txt
_cod_data_source_block           global2
_cod_original_sg_symbol_H-M      'I m a 2 '
_cod_original_formula_sum        'C4 Ag1 N3'
_cod_database_code               7115399
_iucr_refine_instruction_details_constraints
;
BLOCK SCALE X'S 
CONT AG(1,U'S) 
CONT N(1,U[ISO]) UNTIL LAST 
END                                                                             
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_iucr_refine_instruction_details_restraints
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NO 
REM   HREST   START (DO NOT REMOVE THIS LINE) 
REM   HREST   END (DO NOT REMOVE THIS LINE) 
DISTANCE 1.150000 , 0.050000 = N(1) TO C(1) 
DISTANCE 1.150000 , 0.050000 = N(2) TO C(2) 
DISTANCE 1.400000 , 0.050000 = C(2) TO C(3) 
REM   DELU   START (DO NOT REMOVE THIS LINE) 
VIBR .0, 0.00500 = N(1) TO N(2,2) 
VIBR .0, 0.00500 = N(2) TO N(2,2) 
VIBR .0, 0.00500 = N(2) TO N(1) 
VIBR .0, 0.00200 = N(1) TO C(1) 
VIBR .0, 0.00200 = C(1) TO C(3,3,1,-1,1,1) 
VIBR .0, 0.00500 = N(1) TO C(3,3,1,-1,1,1) 
VIBR .0, 0.00200 = N(2) TO C(2) 
VIBR .0, 0.00200 = C(2) TO C(3) 
VIBR .0, 0.00500 = C(3) TO N(2) 
VIBR .0, 0.00500 = C(2) TO C(1,3,1,0,1,-1) 
VIBR .0, 0.00500 = C(2,2,1,1) TO C(1,3,1,0,1,-1) 
VIBR .0, 0.00500 = C(2,2,1,1) TO C(2) 
REM   DELU   END (DO NOT REMOVE THIS LINE) 
REM   THERMSIM   START (DO NOT REMOVE THIS LINE) 
U(IJ) .0, 0.04000 = N(1) TO C(1) 
U(IJ) .0, 0.04000 = C(1) TO C(3,3,1,-1,1,1) 
U(IJ) .0, 0.04000 = N(2) TO C(2) 
U(IJ) .0, 0.04000 = C(2) TO C(3) 
REM   THERMSIM   END (DO NOT REMOVE THIS LINE) 
END                                                                             
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