Nicotinamide Riboside Derivatives: Single Crystal Growth and Determination of X-ray Structures

2019 ◽  
Vol 19 (7) ◽  
pp. 4019-4028 ◽  
Author(s):  
Ricardo Alvarez ◽  
Günter Schabert ◽  
Aysel Soydemir ◽  
Lukas Wick ◽  
Urs Spitz ◽  
...  
2020 ◽  
Author(s):  
Keishiro Yamashita ◽  
Kazuki Komatsu ◽  
Hiroyuki Kagi

An crystal-growth technique for single crystal x-ray structure analysis of high-pressure forms of hydrogen-bonded crystals is proposed. We used alcohol mixture (methanol: ethanol = 4:1 in volumetric ratio), which is a widely used pressure transmitting medium, inhibiting the nucleation and growth of unwanted crystals. In this paper, two kinds of single crystals which have not been obtained using a conventional experimental technique were obtained using this technique: ice VI at 1.99 GPa and MgCl<sub>2</sub>·7H<sub>2</sub>O at 2.50 GPa at room temperature. Here we first report the crystal structure of MgCl2·7H2O. This technique simultaneously meets the requirement of hydrostaticity for high-pressure experiments and has feasibility for further in-situ measurements.


2012 ◽  
Vol 12 (2) ◽  
pp. 990-993 ◽  
Author(s):  
Mani Upreti ◽  
Jared P. Smit ◽  
Eric J. Hagen ◽  
Valeriya N. Smolenskaya ◽  
Indra Prakash

2004 ◽  
Vol 59 (5) ◽  
pp. 567-572 ◽  
Author(s):  
Claus Mühle ◽  
Andrey Karpov ◽  
Jürgen Nuss ◽  
Martin Jansen

Abstract Crystals of K2Pt(CN)4Br2, K2Pt(CN)4I2 and K2Pt(CN)4Cl2 ·2H2O were grown, and their crystal structures have been determined from single crystal data. The structure of K2Pt(CN)4Cl2 has been determined and refined from X-ray powder data. All compounds crystallize monoclinicly (P21/c; Z = 2), and K2Pt(CN)4X2 with X = Cl, Br, I are isostructural. K2Pt(CN)4Cl2: a = 708.48(2); b = 903.28(3); c = 853.13(3) pm; β = 106.370(2)°; Rp = 0.064 (N(hkl) = 423). K2Pt(CN)4Br2: a = 716.0(1); b = 899.1(1); c = 867.9(1) pm; β = 106.85(1)°; R(F)N′ = 0.026 (N’(hkl) = 3757). K2Pt(CN)4I2: a = 724.8(1); b = 914.5(1); c = 892.1(1) pm; β = 107.56(1)°; R(F)N′ = 0.025 (N’(hkl) = 2197). K2Pt(CN)4Cl2 ·2H2O: a = 763.76(4); b = 1143.05(6); c = 789.06(4) pm; β = 105.18(1)°; R(F)N′ = 0.021 (N’(hkl) = 2281). Raman and infrared spectroscopy data are reported.


1990 ◽  
Vol 15 (2) ◽  
pp. 41-49 ◽  
Author(s):  
Naoichi YAMAMOTO ◽  
Yoshio OKA ◽  
Osamu TAMADA

2007 ◽  
Vol 306 (1) ◽  
pp. 233-239 ◽  
Author(s):  
Markus Valkeapää ◽  
Martin Valldor ◽  
Sven Lidin ◽  
Tomasz Lada ◽  
Andrzej Morawski ◽  
...  

2019 ◽  
Author(s):  
Keishiro Yamashita ◽  
Kazuki Komatsu ◽  
Hiroyuki Kagi

An crystal-growth technique for single crystal x-ray structure analysis of high-pressure forms of hydrogen-bonded crystals is proposed. We used alcohol mixture (methanol: ethanol = 4:1 in volumetric ratio), which is a widely used pressure transmitting medium, inhibiting the nucleation and growth of unwanted crystals. In this paper, two kinds of single crystals which have not been obtained using a conventional experimental technique were obtained using this technique: ice VI at 1.99 GPa and MgCl<sub>2</sub>·7H<sub>2</sub>O at 2.51 GPa at room temperature. Here we first report the crystal structure of MgCl2·7H2O. This technique simultaneously meets the requirement of hydrostaticity for high-pressure experiments and has feasibility for further in-situ measurements.


1998 ◽  
Vol 139 (2) ◽  
pp. 304-309 ◽  
Author(s):  
Masaru Takahashi ◽  
Kazuyoshi Uematsu ◽  
Zuo-Guang Ye ◽  
Mineo Sato

1982 ◽  
Vol 37 (10) ◽  
pp. 1230-1233 ◽  
Author(s):  
Günter Schmid ◽  
Roland Boese ◽  
Dieter Bläser

Abstract Tris(dimethylamino)borane, X-ray The crystal and molecular structure of tris(dimethylamino)borane, a liquid at room temperature, has been determined by single-crystal X-ray diffraction methods at - 116°C. The single-crystal growth was accomplished by means of a miniature zone melting process on the diffractometer. The structure data are compared with those of other aminoboranes.


1989 ◽  
Vol 152 ◽  
Author(s):  
J. L. Robertson ◽  
X. G. Jiang ◽  
P. C. Chow ◽  
S. C. Moss ◽  
Y. Lifshitz ◽  
...  

ABSTRACTOur recent report of epitaxial single crystal growth of C+ ion-beam-deposited diamond films on (111) single crystals of silicon is shown to be incorrect. We briefly describe the circumstances leading to this revision (and to our earlier finding) and discuss the possible structure of these films based on preliminary synchrotron X-ray data and on the Raman spectrum.


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