#------------------------------------------------------------------------------
#$Date: 2011-03-31 12:48:06 +0100 (Thu, 31 Mar 2011) $
#$Revision: 17004 $
#$URL: svn://www.crystallography.net/cod/cif/2/2003220.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_2003220
_publ_section_title
;
Disorder in n-Alkyl Ammonium Dihydrogen Phosphate
Crystals: (C~n~H~2n+1~NH~3~^+^)H~2~PO~4~^-^
;
_journal_name_full               'Acta Crystallographica C'
_journal_page_first              420
_journal_page_last               423
_journal_volume                  51
_journal_year                    1995
_chemical_compound_source        ?
_chemical_formula_sum            'C7 H20 N O4 P'
_chemical_formula_weight         213.2
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_type_scat_source           IntTabIV
_cell_angle_alpha                90
_cell_angle_beta                 90.74(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   4.577(1)
_cell_length_b                   32.074(6)
_cell_length_c                   7.353(1)
_cell_measurement_reflns_used    37
_cell_measurement_temperature    296
_cell_measurement_theta_max      13
_cell_measurement_theta_min      7
_cell_volume                     1079.4(3)
_diffrn_measurement_device       'Kuma KM-4'
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.036
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       48
_diffrn_reflns_limit_k_min       -48
_diffrn_reflns_limit_l_max       0
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            5869
_diffrn_reflns_theta_max         36.5
_diffrn_standards_decay_%        2.2
_diffrn_standards_interval_count 50
_diffrn_standards_interval_time  ?
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    0.234
_exptl_absorpt_correction_T_max  0.82
_exptl_absorpt_correction_T_min  0.76
_exptl_absorpt_correction_type   sphere
_exptl_crystal_colour            'colourless, transparent'
_exptl_crystal_density_diffrn    1.312
_exptl_crystal_density_meas      ?
_exptl_crystal_description       Sphere
_exptl_crystal_size_max          ?
_exptl_crystal_size_mid          ?
_exptl_crystal_size_min          ?
_exptl_crystal_size_rad          0.18
_refine_diff_density_max         0.34
_refine_diff_density_min         -0.37
_refine_ls_extinction_coef       '\k = 0.018'
_refine_ls_extinction_method
' F~c~ = F(1 + 0.002\kF^2^/sin2\q)^-1/4^ (Larson, 1976)'
_refine_ls_goodness_of_fit_obs   1.45
_refine_ls_hydrogen_treatment    'H atoms: see text'
_refine_ls_number_parameters     164
_refine_ls_number_reflns         2508
_refine_ls_R_factor_obs          0.056
_refine_ls_shift/esd_max         0.178
_refine_ls_structure_factor_coef F
_refine_ls_weighting_scheme      'w = 1/[\s^2^(F~o~) + 0.000295(F~o~^2^)]'
_refine_ls_wR_factor_obs         0.060
_reflns_number_observed          1071
_reflns_number_total             2508
_reflns_observed_criterion       F>4\s(F)
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' tag value 'spherical' was replaced
with 'sphere' value.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_database_code               2003220
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,-z
x,1/2-y,1/2+z
-x,1/2+y,1/2-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
C(1) .8306(14) -.0785(2) .2537(13) .056(2)
C(2) 1.0087(12) -.0378(2) .2475(10) .040(1)
C(3) .8225(10) .0005(2) .2507(11) .037(1)
C(4) .9960(12) .0410(2) .2501(11) .039(1)
C(5) .8075(10) .0801(2) .2515(11) .040(1)
C(6) .9788(10) .1206(2) .2498(11) .040(1)
C(7) .7808(10) .1585(2) .2460(9) .032(1)
N .9450(8) .1974(1) .2489(9) .041(1)
P .3768(3) .2952(1) .2443(3) .028(1)
O(1) .6108(8) .3305(1) .2521(10) .051(1)
O(2) .1160(12) .3076(2) .1378(12) .034(2)
O(3) .3106(14) .2888(2) .4420(12) .040(2)
O(4) .5090(14) .2542(2) .1641(12) .032(2)
O(21) .1109(12) .3094(3) .3617(14) .045(2)
O(31) .3171(14) .2885(2) .0486(11) .036(2)
O(41) .5062(13) .2542(2) .3253(12) .032(3)
H(11) .9520 -.0977 .2606 .067(4)
H(12) .7128 -.0800 .3597 .029(4)
H(13) .7019 -.0796 .1465 .023(4)
H(21) 1.1282 -.0385 .3412 .015(4)
H(22) 1.1262 -.0375 .1108 .059(4)
H(31) .6994 .0001 .3502 .065(4)
H(32) .6930 .0003 .1459 .032(4)
H(41) 1.1246 .0415 .1449 .053(4)
H(42) 1.1277 .0416 .3562 .016(4)
H(51) .6685 .0799 .1531 .029(4)
H(52) .6998 .0800 .3582 .031(4)
H(61) 1.1041 .1214 .1439 .068(4)
H(62) 1.1074 .1215 .3554 .015(4)
H(71) .6591 .1580 .3550 .055(4)
H(72) .6517 .1574 .1436 .024(4)
H(1) 1.0578 .1997 .3363 .047(4)
H(2) .8235 .2194 .2541 .027(4)
H(3) 1.0471 .2000 .1387 .049(4)