<sup>13</sup>C and <sup>31</sup>P high resolution solid state NMR studies of cyclophosphamide and its analogues

Tadeusiak, Elżbieta; Olejniczak, Sebastian; Ciesielski, W.

doi:10.1002/hc.20028

Cited by 2 publications

References 33 publications

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C‐13 Chemical‐Shift Tensors in Organic Materials

Harper

Iuliucci

2014

Encyclopedia of Analytical Chemistry

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The chemical‐shift tensor provides an exquisitely sensitive measure of the electronic environment around a nucleus. The tensor is defined by a real symmetric 3 × 3 matrix with six measurable components. Single crystals are usually required to measure all six components whereas three shifts per nucleus are measurable in powders. These powder data, known as principal values , are defined as δ 11 ≥ δ 22 ≥ δ 33 . Presently, most 2D experiments measuring tensor data display the 1D isotropic spectrum along one axis and the tensor patterns for each resonance along the second dimension. Experiments most frequently used are two‐dimensional phase‐adjusted spinning sideband (2D PASS), phase corrected magic angle turning (PHORMAT), FIREMAT (five π replicated magic angle turning), RAI (recoupling of anistropic information), SUPER (separation of undistorted powder patterns by effortless recoupling), and CSA (chemical shift anisotropy) amplification. Very few simple relationships exist between principal values and structure, thus comparison with model structures from computational methods has become important. Recently, these computational methods have been used to predict structure in solids that are intractable to traditional methods. Tensor data have also been found to be extremely sensitive to crystal structure and can therefore be used to further refine some structures, including single crystal structures. The prospect of predicting entire crystal structures from 13 C tensor data and computational methods is now realistic, and a few structures have recently been determined without diffraction data.

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C‐13 Chemical‐Shift Tensors in Organic Materials

Harper

Iuliucci

2014

Encyclopedia of Analytical Chemistry

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A vibrational circular dichroism (VCD) methodology for the measurement of enantiomeric excess in chiral compounds in the solid phase and for the complementary use of NMR and VCD techniques in solution: the camphor case

Quesada‐Moreno

Virgili

Monteagudo

et al. 2018

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¹³C and ³¹P high resolution solid state NMR studies of cyclophosphamide and its analogues

Abstract: Three anticancer agents cyclophosphamide, iphosphamide, and bromophosphamide were studied using 13C and 31P SS NMR. © 2004 Wiley Periodicals, Inc. Heteroatom Chem 15:388–394, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20028

Cited by 2 publications

References 33 publications

C‐13 Chemical‐Shift Tensors in Organic Materials

C‐13 Chemical‐Shift Tensors in Organic Materials

A vibrational circular dichroism (VCD) methodology for the measurement of enantiomeric excess in chiral compounds in the solid phase and for the complementary use of NMR and VCD techniques in solution: the camphor case

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13C and 31P high resolution solid state NMR studies of cyclophosphamide and its analogues

Abstract: Three anticancer agents cyclophosphamide, iphosphamide, and bromophosphamide were studied using 13C and 31P SS NMR. © 2004 Wiley Periodicals, Inc. Heteroatom Chem 15:388–394, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20028

Cited by 2 publications

References 33 publications

C‐13 Chemical‐Shift Tensors in Organic Materials

C‐13 Chemical‐Shift Tensors in Organic Materials

A vibrational circular dichroism (VCD) methodology for the measurement of enantiomeric excess in chiral compounds in the solid phase and for the complementary use of NMR and VCD techniques in solution: the camphor case

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¹³C and ³¹P high resolution solid state NMR studies of cyclophosphamide and its analogues