Design and Synthesis of an Exceptionally Stable and Highly Porous Metal-Organic Framework
Nature, 1999 · paper · Materials
The text provided is only a fragment of a different paper on carbon nanotube junctions and a reference list. It does not describe the metal-organic framework work, so only the title's subject, a stable, highly porous metal-organic framework, can be given.
2 findings
Substance p.279: 'The centre of the smaller of these has 24 H atoms at 7.10 Å and 24 C atoms at 7.97 Å ... spheres of material with diameter 15.1 Å and 11.0 Å could fit'. The 11.0 Å value cannot be reproduced from the stated distances and van der Waals radii (H 1.2, C 1.7 Å).
- p. 4 Text, col. 1, cavity description
24 H atoms at 7.10 Å and 24 C atoms at 7.97 Å
- p. 4 Text, col. 1
spheres of material with diameter 15.1 Å and 11.0 Å could fit
- p. 4 p.279, first paragraph, left column
The centre of the smaller of these has 24 H atoms at 7.10 Å and 24 C atoms at 7.97 Å
- p. 4 p.279, first paragraph, left column
spheres of material with diameter 15.1 Å and 11.0 Å could fit in the large and small cavities
Only the authors can say what is right here.
Judge's note: Checked on the page 3 and page 4 images. The large cavity reproduces: 2×(9.26−1.7) = 15.1 (the C contact is limiting). The aperture reproduces as 8.0 from C. For the small cavity the stated radii give 11.8 Å from H or 12.5 Å from C; neither is 11.0 Å. Either a distance or the diameter appears misprinted, or a different criterion was used without being stated. Only the authors can say which.
Second check: another model agreed
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Reference or label Ref. 18 reads 'Li, H., Eddaouidi, M., Groy, T. L. & Yaghi, O. M. ... J. Am. Chem. Soc. 120, 8571–8672 (1998)'. The byline spells the name 'Eddaoudi', and the page range spans about 100 pages.
- p. 4 Reference 18
Li, H., Eddaouidi, M., Groy, T. L. & Yaghi, O. M.
- p. 4 Reference 18
Soc. 120, 8571–8672 (1998).
- p. 4 Reference 18
120, 8571–8672 (1998)
- p. 4 Reference 18
120, 8571±8672 (1998)
Only the authors can say what is right here.
Judge's note: Rests on outside knowledge: the probable true end page of the JACS communication (likely 8572). The name mismatch is internal: the page 1 byline reads 'Mohamed Eddaoudi' while ref. 18 on the page 4 image reads 'Eddaouidi'. The 8571–8672 range is confirmed on the image and is implausible for a communication, but the correct pages cannot be checked from the files.
Second check: another model agreed
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13 minor (typos and the like; most checked by the judge only)
Reference or label The text cites 'Fig. 1a' and 'Fig. 1b', but Figure 1 has no panel letters; its caption uses 'Top, the Zn4(O)O12C6 cluster. Left... Middle... Right... Bottom'.
- p. 2 p.277, left column, paragraph 2
cluster motif shown in Fig. 1a
- p. 2 p.277, left column
target extended three-dimensional framework shown in Fig. 1b
- p. 2 Figure 1 caption
Top, the Zn4(O)O12C6 cluster.
- p. 2 text
shown in Fig. 1a
Judge's note: On the page 2 image, Figure 1 carries no a/b labels and the caption is organised as Top (Left/Middle/Right) and Bottom. The intended mapping (a = top, b = bottom) can be inferred, but the panel pointers have no labelled target.
Second check: another model agreed
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Wording The Figure 3 caption gives the N2 isotherm 'at 78 K', while Table 1 lists N2 (and Ar) at '−194' °C (about 79 K); the plateau (~831 mg/g) appears to be the same measurement.
- p. 3 Figure 3 caption
Nitrogen gas sorption isotherm at 78 K
- p. 2 Table 1, N2 row
−194
- p. 3 Figure 3 legend
isotherm at 78 K
Judge's note: Confirmed on the page 2 and page 3 images: Table 1 T column shows −194 for Ar and N2, and the Figure 3 caption says 78 K. 78 K is −195 °C. The 1 K gap is small and probably reflects loose rounding of the liquid-N2 temperature, so this is an observation.
Second check: another model agreed
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Wording The Figure 2 legend lists 'C6H5Cl: M+, 77 (C6H5+); M+, 112 a.m.u. ...', labelling the m/z 77 C6H5+ fragment as M+ although the molecular ion of chlorobenzene is at 112/114.
- p. 3 Figure 2 legend, mass spectrometry
C6H5Cl: M+, 77 (C6H+ 5)
Only the authors can say what is right here.
Judge's note: The page 3 image confirms the wording. For DMF the legend uses M+ for the true parent ion (73, C3H7NO+), and the text says parent-ion masses were observed. The 77 ion is the fragment left after loss of Cl, so calling it M+ is a mislabel or loose usage. Only the authors can say which label was intended.
Second check: another model agreed
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Wording p.279: guests 'in the original material ... have a volume of 9,512 Å3, which is 55% of the unit cell volume'. That is 56% of the as-synthesized cell (V = 16,913.2 Å3) and 55% only of the desolvated cell (17,343.6 Å3).
- p. 4 Text, col. 1
volume of 9,512 Å3, which is 55% of the unit cell volume
- p. 3 Figure 2 legend, as-synthesized cell
V = 16,913.2(3) Å
- p. 4 paragraph 1
have a volume of 9,512 Å3, which is 55% of the unit cell volume
- p. 3 Figure 2 legend
V = 16,913.23
Only the authors can say what is right here.
Judge's note: Values checked on the page 3 and page 4 images. The sentence refers to the original (as-synthesized) material, but the 55% matches only the desolvated cell volume, and the text does not say which cell was used. Query to the authors.
Second check: another model agreed
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Wording p.279 says the desolvated crystal has 'cell parameters and atomic positions coincident with those of the as-synthesized material', yet the Fig. 2 legend gives a = 25.6690(3) Å (as-synthesized, 213 K) against 25.8849(3) Å (desolvated, 169 K).
- p. 4 Text, col. 1
cell param- eters and atomic positions coincident with those of the as- synthesized material
- p. 3 Figure 2 legend
a = 25.6690(3) Å
- p. 3 Figure 2 legend
a = 25.8849(3) Å
Only the authors can say what is right here.
Judge's note: The page 3 legend and page 4 text confirm the wording. The two a values differ by 0.216 Å (about 0.8%; cell volume +2.5%), far beyond the quoted e.s.d.s, and the paper does not explain the gap. 'Coincident' overstates the agreement, unless it is meant loosely.
Second check: another model agreed
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Typo p.277 col. 2 prints 'N,N′-dimethylformamide (DMF)' with a prime; both methyls are on one nitrogen, so it should be N,N-dimethylformamide.
- p. 2 Text, col. 2
N,N′-dimethylformamide (DMF)
Judge's note: The page 2 image shows 'N,N′-dimethylformamide (DMF)/chlorobenzene' with the prime. DMF has a single nitrogen, so the prime is wrong. (The N,N′ in ref. 5 refers to a bidentate ligand and is a separate case.)
Second check: none (judge only)
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Typo In the Figure 2 legend the as-synthesized cell volume is printed 'V = 16,913.2(3) Å,' without the cube, whereas the desolvated cell has '17,343.6(8) Å3'.
- p. 3 Figure 2 legend
V = 16,913.2(3) Å,
- p. 3 Figure 2 legend, as-synthesized
V = 16,913.2(3) Å
Judge's note: The page 3 image shows 'V = 16,913.2(3) Å,' with no superscript 3, while the desolvated entry shows 'Å3'. The unit should be Å3.
Second check: none (judge only)
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Typo The Figure 2 legend prints '114 a.m.u. (C6H5 37C+)'; it should read C6H5 37Cl+, the partner of '(C6H5 35Cl+)' at 112.
- p. 3 Figure 2 legend, mass spectrometry
114 a.m.u. (C6H5 37C+)
Judge's note: The page 3 image shows '(C6H5 37C+)' beside '(C6H5 35Cl+)'. The 'l' is missing, which turns the chlorine isotope label into carbon.
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Typo p.279 prints 'Using the Dubinin–Raduskhvich equation'; the standard name is Dubinin–Radushkevich.
- p. 4 Text, col. 1
Dubinin–Raduskhvich equation
- p. 4 sorption paragraph
Dubinin±Raduskhvich equation
Only the authors can say what is right here.
Judge's note: Rests on outside knowledge: the standard spelling of the equation's name is Radushkevich. The page 4 image shows 'Dubinin–Raduskhvich', so the misspelling is in the published text.
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Typo p.279 prints 'crystallinity as evidence by another X-ray single-crystal diffraction study'; it should be 'as evidenced by'.
- p. 4 Text, col. 1
evidence by another X-ray single-crystal diffraction study
- p. 4 p.279, third paragraph
crystallinity as evidence by another X-ray single-crystal diffraction study
- p. 4 paragraph on heating at 300 °C
as evidence by another X-ray single-crystal diffraction study
Judge's note: The page 4 image shows 'as evidence by'. This is a grammatical slip.
Second check: none (judge only)
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Typo Ref. 2 spells the first author as "Kitgawa, S., Munakata, M. & Tanimura, T."; it should probably be Kitagawa.
- p. 4 Reference 2
Kitgawa, S., Munakata, M. & Tanimura, T.
- p. 4 Ref. 18
Eddaouidi, M.
- p. 4 Ref. 2
Kitgawa, S.
Only the authors can say what is right here.
Judge's note: Rests on outside knowledge: that the author's name is S. Kitagawa. The page 4 image (ref. 2, bottom left) and the text layer (line 420) both read 'Kitgawa'. The 'Eddaouidi' misspelling that one reviewer also mentions is judged separately under C019.
Second check: none (judge only)
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Typo The title of Ref. 17 prints "Crystal structures of Rb3Zn4O(PO4)·3.5H2O", with no subscript 3 after (PO4). The same title gives the family formula M3Zn4O(XO4)3·nH2O.
- p. 4 Reference 17 title
Rb3Zn4O(PO4)·3.5H2O
- p. 4 Reference 17
Crystal structures of Rb3Zn4O(PO4)·3.5H2O
Judge's note: The text layer (line 451) reads 'Rb3Zn4O(PO4)×3.5H2O, K3Zn4O(AsO4)3×4H2O', and the page 4 image matches: the 3 is kept for the As and Na compounds but is missing for the Rb compound. The family formula M3Zn4O(XO4)3 printed in the same title requires (PO4)3. The charge balance works out: 3+8-2-9=0 with the subscript, and +6 without it.
Second check: none (judge only)
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Typo Ref. 18 reads "Li, H., Eddaouidi, M., Groy, T. L. & Yaghi, O. M.", but the same co-author is spelled 'Mohamed Eddaoudi' in this paper's own author line.
- p. 4
Li, H., Eddaouidi, M., Groy, T. L. & Yaghi, O. M.
Judge's note: The page 4 image and the text layer (line 453) both print 'Eddaouidi' in ref. 18. The author line (text layer line 150) gives 'Mohamed Eddaoudi', so the inconsistency can be checked inside the paper. This cluster does not duplicate C017, which covers the separate 'Kitgawa' misspelling.
Second check: none (judge only)