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tangosnow木蟲 (小有名氣)
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[求助]
計算NMR中出現(xiàn)的問題
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各位兄弟姐妹,我在用gipaw.x計算alpha-Na2Si2O5的nmr參數(shù)時,出現(xiàn)下面的情況: stopping ...stopping ... from cdiaghg : error # 169 problems computing cholesky 我實在不太明白這是什么意思,由于GIPAW的贗勢在同類元素中計算出的結(jié)果可以和實驗值對應(yīng),所以我懷疑是不是原子坐標出現(xiàn)了問題,我把system和atomic position兩部分貼上: &system ibrav = 8 celldm(1) = 12.1112 celldm(2) = 2.4063 celldm(3) = 0.7639 nat = 36 ntyp = 3 ecutwfc = 40 ecutrho = 500 ATOMIC_POSITIONS crystal O 0.1793300000000000 0.3478600000000001 0.6170700000000000 O -0.0469200000000000 0.4214100000000001 0.2394500000000000 O -0.1793300000000000 -0.3478600000000001 0.6170700000000000 O 0.0469200000000000 -0.4214100000000001 0.2394500000000000 O -0.1793300000000000 0.3478600000000001 -0.6170700000000000 O 0.0469200000000000 0.4214100000000001 -0.2394500000000000 O 0.1793300000000000 -0.3478600000000001 -0.6170700000000000 O -0.0469200000000000 -0.4214100000000001 -0.2394500000000000 O -0.1793300000000000 -0.3478600000000001 -0.6170700000000000 O 0.0469200000000000 -0.4214100000000001 -0.2394500000000000 O 0.1793300000000000 0.3478600000000001 -0.6170700000000000 O -0.0469200000000000 0.4214100000000001 -0.2394500000000000 O 0.1793300000000000 -0.3478600000000001 0.6170700000000000 O -0.0469200000000000 -0.4214100000000001 0.2394500000000000 O -0.1793300000000000 0.3478600000000001 0.6170700000000000 O 0.0469200000000000 0.4214100000000001 0.2394500000000000 O 0.0000000000000000 0.2500000000000000 0.2392900000000000 O 0.0000000000000000 -0.2500000000000000 0.2392900000000000 O 0.0000000000000000 0.2500000000000000 -0.2392900000000000 O 0.0000000000000000 -0.2500000000000000 -0.2392900000000000 Na 0.0988800000000000 0.5603600000000000 0.2370400000000000 Na -0.0988800000000000 -0.5603600000000000 0.2370400000000000 Na -0.0988800000000000 0.5603600000000000 -0.2370400000000000 Na 0.0988800000000000 -0.5603600000000000 -0.2370400000000000 Na -0.0988800000000000 -0.5603600000000000 -0.2370400000000000 Na 0.0988800000000000 0.5603600000000000 -0.2370400000000000 Na 0.0988800000000000 -0.5603600000000000 0.2370400000000000 Na -0.0988800000000000 0.5603600000000000 0.2370400000000000 Si 0.1051600000000000 0.3429800000000002 0.2962400000000000 Si -0.1051600000000000 -0.3429800000000002 0.2962400000000000 Si -0.1051600000000000 0.3429800000000002 -0.2962400000000000 Si 0.1051600000000000 -0.3429800000000002 -0.2962400000000000 Si -0.1051600000000000 -0.3429800000000002 -0.2962400000000000 Si 0.1051600000000000 0.3429800000000002 -0.2962400000000000 Si 0.1051600000000000 -0.3429800000000002 0.2962400000000000 Si -0.1051600000000000 0.3429800000000002 0.2962400000000000 alpha-Na2Si2O5的信息如下: Reference Acta Crystallographica B (24,1968-38,1982) (1968), 24, 13-19 Unit Cell 6.409(2) 15.422(4) 4.896(2) 90. 90. 90. Vol 483.92 Z 4 Space Group P c n b SG Number 60 Cryst Sys orthorhombic Pearson oP36 Wyckoff d4 c R Value .039 Red Cell P 4.896 6.409 15.422 90 90 90 483.919 Trans Red 0.000 0.000 1.000 / 1.000 0.000 0.000 / 0.000 1.000 0.000 Atom # OX SITE x y z SOF H Na 1 +1 8 d 0.09888(15) 0.56036(5) 0.23704(16) 1. 0 Si 1 +4 8 d 0.10516(9) 0.34298(3) 0.29624(9) 1. 0 O 1 -2 4 c 0 0.25 0.23929(42) 1. 0 O 2 -2 8 d 0.17933(25) 0.34786(9) 0.61707(26) 1. 0 O 3 -2 8 d -.04692(26) 0.42141(9) 0.23945(28) 1. 0 Lbl Type U11 U22 U33 U12 U13 U23 Na1 Na1+ 0.0153(4) 0.0182(4) 0.0130(3) 0.0008(4) 0.0003(3) -.0008(3) Si1 Si4+ 0.0104(3) 0.0089(2) 0.0056(2) -.0010(2) -.0005(2) 0.0001(2) O1 O2- 0.0281(13) 0.0156(9) 0.0172(9) -.011(1) 0 0 O2 O2- 0.0121(7) 0.0219(6) 0.0074(5) 0.0027(6) -.0005(5) -.0007(5) O3 O2- 0.0165(8) 0.0161(6) 0.0129(6) 0.0034(6) -.0017(5) 0.0004(5) *end for ICSD #34669 請指點一下 |
木蟲 (小有名氣)
木蟲 (小有名氣)
木蟲 (正式寫手)
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