bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of deep‐impurity governed photoelectrical properties in differently doped CdTe
Authors: Kadys A. , Sudzius M. , Jarasiunas K. , Fochuk P. , Feychuk P. , Hellin M. L. , Verstraeten D. 
Published: April 2007

AbstractWe investigated nonequilibrium carrier generation, transport, and recombination processes in differently doped bulk CdTe crystals by the contactless nonlinear optical technique – the degenerate four‐wave mixing. Doping by Ge, Pb, Sb, Se, Si, or Sn was reached by Bridgman, whereas vanadium doped CdTe ingots were grown by the vertical Bridgman–Stockbarger method. Some crystals of CdTe:Sb as well as CdTe:Ge were cut from the different parts of ingots. At 1064 nm below bandgap excitation by light interference pattern and varying the grating period, we measured the space‐charge field dependent values of effective diffusion coefficient and determined a sign of the photogenerated carriers. In samples, doped with V, Sb, Si, or Ge, the experiments revealed that the majority carriers are electrons, while in Pb, Se, Sb, Ge, or Sn‐doped crystals – the holes. Strong feed‐back effect of the light‐created SC electric field to subnanosecond carrier dynamics was observed in the crystals doped with Ge, Pb, Sb, or Sn. Carrier lifetimes longer than 40 ns together with long living SC field component makes the Ge, Sb, or Sn doped crystals as very promising photorefractive media for real time holographic devices. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Antibacterial activity of two canthin‐6‐one alkaloids from Allium neapolitanum
Authors: O'Donnell Gemma , Gibbons Simon 
Published: April 2007

AbstractThe emergence of multidrug‐resistant strains of many human pathogens has led to an urgent need for the discovery and development of new antimicrobial agents. As part of an ongoing investigation into the antibacterial properties of the Alliaceae, the isolation of 1 (canthin‐6‐one), 2 (8‐hydroxy‐canthin‐6‐one) and 3 (5(ζ)‐hydroxy‐octadeca‐6(E)‐8(Z)‐dienioc acid)) from A. neapolitanum, a perennial bulbous herb found in open pastures of the Mediterranean is reported. Compounds 1 and 2 were isolated by Sephadex LH‐20 from fractions exhibiting a positive reaction with Dragendorff's reagent on TLC, compound 3 was isolated after HPLC purification of Sephadex fractions. Structures were elucidated by extensive 1D and 2D NMR experiments and are in accordance with published data, however, the 13C NMR data for compound 2 and the 1H and 13C NMR data for compound 3 are reported here for the first time. Canthin‐6‐one alkaloids are well‐known constituents of the Simaroubaceae and Rutaceae, and display a wide range of biological activities. These metabolites are reported as constituents of the Alliaceae here for the first time, and displayed minimum inhibitory concentrations (MICs) in the range 8–32 µg/mL against a panel of fast‐growing Mycobacterium species and 8–64 µg/mL against multidrug‐resistant (MDR) and methicillin‐resistant (MRSA) strains of Staphylococcus aureus. Compound 3 displayed antimycobacterial activity in the range of 16–32 µg/mL. Copyright © 2007 John Wiley & Sons, Ltd.
Reproductive toxicity of lapachol in adult male Wistar rats submitted to short‐term treatment
Authors: de Cássia da Silveira e Sá Rita , de Oliveira Guerra Martha 
Published: April 2007

AbstractLapachol is a therapeutic naphthoquinone, but little is known about its general and reproductive toxicity. In female rats, a high incidence of resorptions and fetal mortality has been reported. This work analyses the effect of the short‐term administration of lapachol on vital and reproductive organs, and sperm production in Wistar rats. Adult animals were treated with 1 mL of lapachol hydroalcohol solution (100 mg/kg of body weight) for 5 days and killed 3 (T1) and 14 days (T2) after the end of treatment. Body and organ weights and sperm production were evaluated. The administration of lapachol significantly reduced the weight of the seminal vesicle (T1 animals). No significant alteration of gamete production, body weight and the weight of the other organs analysed were detected. The results suggest a reproductive toxicity effect of lapachol, indicating the seminal vesicle as a possible target organ. Copyright © 2007 John Wiley & Sons, Ltd.
Excess polarizabilities upon excitation from the ground state to the first dipole‐allowed excited state of diphenylpolyenes
Authors: Ye J. F. , Chen H. , Note R. , Mizuseki H. , Kawazoe Y. 
Published: April 2007

AbstractThis paper discusses the excess polarizabilities upon excitation from the ground state to the first dipole‐allowed excited state (S1) of diphenylpolyenes by using the time‐dependent density functional theory. Two hybrid exchange‐correlation (xc) potentials Becke‐3 Lee‐Yang‐Parr (B3LYP) and Perdew‐Burke‐Ernzerhof (PBE1PBE) were employed. Our calculations indicate that the magnitude of the excess polarizability will decrease while the molecule evolves from the unrelaxed S1 state to the relaxed S1 state. This decreasing trend is found to be independent of substituents, though substituents can change the value of the excess polarizability. © 2007 Wiley Periodicals, Inc. Int J Quantum Chem, 2007
Quantum chemical study of penicillin: Reactions after acylation
Authors: Li Rui , Feng Dacheng , Zhu Feng 
Published: April 2007

AbstractThe density functional theory methods were used on the model molecules of penicillin to determine the possible reactions after their acylation on β‐lactamase, and the results were compared with sulbactam we have studied. The results show that, the acylated‐enzyme tetrahedral intermediate can evolves with opening of β‐lactam ring as well as the thiazole ring; the thiazole ring‐open products may be formed via β‐lactam ring‐open product or from tetrahedral intermediate directly. Those products, in imine or enamine form, can tautomerize via hydrogen migration. In virtue of the water‐assisted, their energy barriers are obviously reduced. © 2007 Wiley Periodicals, Inc. Int J Quantum Chem, 2007
Bayesian and frequentist two‐stage treatment strategies based on sequential failure times subject to interval censoring
Authors: Thall Peter F. , Wooten Leiko H. , Logothetis Christopher J. , Millikan Randall E. , Tannir Nizar M. 
Published: April 2007

AbstractFor many diseases, therapy involves multiple stages, with the treatment in each stage chosen adaptively based on the patient's current disease status and history of previous treatments and clinical outcomes. Physicians routinely use such multi‐stage treatment strategies, also called dynamic treatment regimes or treatment policies. We present a Bayesian framework for a clinical trial comparing two‐stage strategies based on the time to overall failure, defined as either second disease worsening or discontinuation of therapy. Each patient is randomized among a set of treatments at enrollment, and if disease worsening occurs the patient is then re‐randomized among a set of treatments excluding the treatment received initially. The goal is to select the two‐stage strategy having the largest average overall failure time. A parametric model is formulated to account for non‐constant failure time hazards, regression of the second failure time on the patient's first worsening time, and the complications that the failure time in either stage may be interval censored and there may be a delay between first worsening and the start of the second stage of therapy. Four different criteria, two Bayesian and two frequentist, for selecting a best strategy are considered. The methods are applied to a trial comparing two‐stage strategies for treating metastatic renal cancer, and a simulation study in the context of this trial is presented. Advantages and disadvantages of this design compared to standard methods are discussed. Copyright © 2007 John Wiley & Sons, Ltd.
Can us locations compete with low‐cost Mexican labor? a location cost analysis of North Carolina and the Yucatan in the sewn bag and case industry
Authors: Sanford Douglas M. , Fink David 
Published: April 2007

AbstractSeveral international investment theories hold that production costs in developing countries should be lower than in developed countries for facilities that utilize globally standardized production technology and semi‐skilled labor. This analysis tests this expectation by estimating the relative production costs in a North Carolina site and a Yucatan site of a sewn bag and case manufacturer. Interestingly, no overall location cost advantage is found for the Yucatan site. 1997 John Wiley & Sons, Inc.
A perspective of marketing in central and Eastern Europe
Authors: Czinkota Michael R. , Gaisbauer Helmut , Springer Reiner 
Published: April 2007

AbstractThe transition of Central and Eastern Europe toward a market economy affords new opportunities but also new risks to international marketers. Based on the work of the authors in the region, this article presents a perspective of the economic shifts which have taken place in these countries. A review of the available international marketing options is offered and a framework for the evaluation of market entry and marketing mix strategies which accommodate these shifts is developed. Emphasis is placed on the need for marketers to go beyond purely commercial criteria in their decision making, by considering the long‐term social and economic repercussions of their actions. 1997 John Wiley & Sons, Inc.
Fe2 Pairs as Structural Units in the Indides RE12Fe2In3 (RE = Ho, Er, Tm, Lu)
Authors: Dzevenko Mariya V. , Zaremba Roman I. , Hlukhyy Viktor H. , Rodewald Ute Ch. , Pöttgen Rainer , Kalychak Yaroslav M. 
Published: April 2007

AbstractThe indides RE12Fe2In3 (RE = Ho, Er, Tm, Lu) have been prepared by arc‐melting the elements and subsequent annealing. All compounds were characterized by X‐ray powder diffraction and the Er12Fe2In3 structure was refined from X‐ray single crystal data: I4/mmm, a = 958.8(1), c = 957.8(1) pm, wR2 = 0.0629, 412 F2 values and 22 variables. The 2a site shows In/Fe mixing, leading to the composition Er12Fe2.31In2.69 for the investigated crystal. The structure (new type) derives from a Cu3Au (≡ RE12In4) like arrangement RE12(T2)1In3, where one fourth of the indium sites is substituted by an Fe2 dumb‐bell at an Fe–Fe distance of 224 pm. The Er12Fe2In3 type is discussed in line with the structures of Er6Co2.19In0.81 (≡ RE12(T2)2In2) and Sm12Ni6In (≡ RE12(T2)3In), where two, respectively three indium sites are substituted by transition metal dumb‐bells.
1,3,2‐Diselenaphospholanes with an Anellated Dicarba‐closo‐dodecaborane(12) Unit
Authors: Wrackmeyer Bernd , García Hernández Zureima , Kempe Rhett , Herberhold Max 
Published: April 2007

AbstractThe reaction of the 1,2‐diselenido‐1,2‐dicarba‐closo‐dodecaborane dianion (1) with dichloro(phenyl)phosphane affords the 1,3,2‐diselenaphospholane (2) containing an anellated dicarba‐closo‐docecaborane(12) unit. The phospholane 2 was oxidised by reactions with the elements to the sulfide 3 and the selenide 4, and partial hydrolysis gave a selenophosphonic acid derivative 5 along with the bis(diselane) 6 and decomposition. The reaction of 2 with (ethene)bis(triphenylphosphane)platinum(0) displaces ethene and is accompanied by oxidative addition and rearrangement into the bis(triphenylphosphane)platinum(II) complex 9, in which the chelating unit is linked to platinum via Pt‐Se and Pt‐P(Se) bonds, a rare example of a metallophosphane selenide. The molecular structures of 2 and 3 were determined by X‐ray analysis. The solution‐state structures of the new compounds follow from consistent multinuclear magnetic resonance data (1H, 11B, 13C, 31P, 77Se, 195Pt NMR).
Stanna‐closo‐dodecaborate: The Crystal Structure of [Li(thf)3]2[SnB11H11], Vibrational Spectroscopy, Thermal Analysis and DFT Calculations
Authors: Gädt Torben , Wesemann Lars 
Published: April 2007

AbstractThe lithium salt of stanna‐closo‐dodecaborate was prepared and single‐crystalline material was obtained from tetrahydrofurane. The salt crystallizes as [Li(thf)3]2[SnB11H11] in the monoclinic space group P21/c (a = 15.0608(10) Å, b = 14.0778(8) Å, c = 18.3890(12) Å and β = 110.324(5)°) and both lithium ions are coordinated to triangular cluster faces via B–H–Li bonds. DFT calculations in combination with a natural population analysis reveal that the tin vertex exhibits a positive partial charge while all boron atoms of the stannaborate cluster carry a negative charge. The boron atoms of the first B5‐belt display the largest negative partial charges. Raman and IR spectra of the cesium salt of [SnB11H11]2− reveal that the cluster breathing modes which involve the tin vertex are found at around 250 cm−1. Furthermore, the thermal stability of the group‐14‐heteroborate is remarkably large with a decomposition temperature of above 900 °C as determined with TG/DTA measurements.
Lithium Isotope Separation by 12‐Metallacrown‐3 Complexes
Authors: Grote Zacharias , Wizemann Hans‐Dieter , Scopelliti Rosario , Severin Kay 
Published: April 2007

AbstractThe 12‐metallacrown‐3 complexes [(C6H5Me)Ru(C5H3NO2)]3 (3), [(C6H3iPr3)Ru(C5H3NO2)]3 (4) and [(C6Me6)Ru(C5H3NO2)]3 (5) were synthesizes by reaction of the corresponding [(arene)RuCl2]2 complex with 2,3‐dihydroxypyridine in the presence of base. Addition of LiCl in methanol gave the adducts 3×LiCl, 4×LiCl and 5×LiCl. The complexes 3, 3×LiCl and 4×LiCl were analyzed by single crystal X‐ray crystallography. The ability of the metallacrown complexes to differentiate between the isotopes 6Li+ and 7Li+ was investigated by isotope selective laser graphite furnace atomic absorption spectroscopy. It was found that the macrocycle 5 preferentially binds to the smaller isotope 7Li+.
Linkage Isomerism in Thiophene Cyclometallated Palladium(II) Complexes. Crystal and Molecular Structure of the Isomers [Pd{n‐SC4H2C(H)=NCy}(O2CMe‐O)(PPh3)] (n = 3, 4)
Authors: Adrio Luis A. , Antelo José M. , Fernández Alberto , Pereira Ma Teresa , Tato Mercedes , Vila José M. 
Published: April 2007

AbstractTreatment of 2‐SC4H3C(H)=NCy, a, or 3‐SC4H3C(H)=NCy, b, with palladium(II) acetate in toluene gave the dinuclear cyclometallated complexes [Pd{n‐SC4H2C(H)=NCy}(O2CMe)]2 (n = 5, 1a; n = 3, 1b; n = 4, 1b′), the latter two as a 1:1 mixture of linkage isomers, whose subsequent reactions produced isomeric mixtures in all cases. Reaction of 1a and 1b, 1b′ with aqueous sodium chloride or bromide yielded the corresponding halide‐bridged complexes [Pd{n‐SC4H2C(H)=NCy}(X)]2 (n = 5: X = Cl, 2a; X = Br, 3a; n = 3,4: X = Cl, 2b, 2b′; X = Br, 3b, 3b′) after metathesis. Reactions of the dinuclear compounds with tertiary phosphines in the appropriate molar ratio gave the mononuclear [Pd{n‐SC4H2C(H)=NCy}(Cl)(PPh3)] (n = 5, 6a; n = 3, 4 4b, 4b′) and [Pd{5‐SC4H2C(H)=NCy}{(Ph2PCH2CH2)2PPh‐P,P,P}](Cl), (5a), and the dinuclear [{Pd[5‐SC4H2C(H)=NCy](O2CMe)}2{μ–Ph2P(CH2)nPPh2}] (n = 2, 7a; n = 3, 8a; n = 4, 9a) complexes. The X‐ray crystal structure of complex 4b, 4b′ is described, establishing the presence of two isomers in the crystal lattice.
Synthesis and Characterization of Lanthanide(III) Nitrate Complexes of an Hexaaza Macrocyclic Ligand
Authors: Fernández‐Fernández M. del C. , Bastida R. , Macías A. , Pérez‐Lourido P. , Valencia Laura 
Published: April 2007

AbstractThe [2+2] barium(II) templated cyclocondensation of 2,6‐diacetylpyridine and ethylendiamine followed by an in situ reduction led to an isomeric mixture of the corresponding saturated macrocycles. The 6S,9S,15R,18R‐meso form of the hexaaza macrocyclic ligand (L) has been obtained by the partial crystallization method. The assignment of the proton and carbon NMR signals was based upon standard COSY, DEPT‐135 and HMQC measurements. The structure of the protonated ligand [H2L](NO3)2·3H2O could be confirmed by X‐ray diffraction. A serie of nitrate lanthanide complexes with L have been prepared. The metal complexes, with general formula [ML](NO3)3·xH2O (M = Nd, Eu, Gd, Tb and Tm), were easily prepared in good yield by direct reaction between the hydrated nitrate metal salt and the macrocyclic ligand. The crystal structure of [NdL(NO3)2](NO3)·H2O has been determined by X‐ray diffraction and shows a mononuclear structure with the neodymium atom in 10‐coordinate with a N6O4 environment. The coordination around the neodymium ion can be described as distorted bicapped cube.
BaSr(NH4)Mg5F15, a Tetragonal Tungsten Bronze Structure with Ammonium Barium Disorder and its Solid Solutions BaxSr2−x(NH4)Mg5F15 (x = 1.8−0.6)
Authors: Kubel F. , Pantazi M. 
Published: April 2007

AbstractThe new fluoride BaSr(NH4)Mg5F15 precipitates as a nanocrystalline powder from aqueous solutions of the alkaline earth ions and ammonium fluoride. The compound crystallizes in the tetragonal tungsten bronze structure type with lattice parameters of a,b = 12.4492(14) Å and c = 3.9421(4) Å (space group P4/mbm [Nr. 127], structure refinement from powder data, RBragg = 4.0 %). Corner‐linked magnesium‐fluoride octahedra form a channel structure which contains one empty triangular channel, one channel filled with Sr2+ [CN = 8+4] and one channel with disordered Ba2+and NH4+ (ratio 1:1) with CN = 7+8. Solid solutions between the composition limits Ba(Ba0.8Sr0.2)(NH4)Mg5F15 and (Ba0.6Sr0.4)Sr(NH4)Mg5F15 were obtained. The crystallite size increases from 15 to 75 nm with increasing barium concentration. The thermal stability between 350 to 450 °C depends on the amount of absorbed (NH4)F. Heated samples show luminescence and phosphorescence.
On Oxohalogeno Niobates(V) M2[Nb3O5X7] (M = NH4, K, Rb, Cs; X = Cl, Br) – New Members of a Compound Family with a Layered Structure
Authors: Beck Johannes , Bordinhão Jairo , Kusterer Christian 
Published: April 2007

AbstractThe reaction of alkali chlorides MCl with NbOCl3 yields melts which on cooling solidify under crystallization. In the case of KCl / NbOCl3, the pink coloured regulus was investigated by powder‐XRD and shown to be biphasic, consisting of K[NbOCl4] (primitive orthorhombic lattice, a = 13.467(2); b = 7.9362(8); c = 14.041(2) Å) and K2[NbOCl5] (F centred cubic lattice, a = 9.8291(2) Å). To a small amount vapour phase transport occurs and colourless crystals of M2[Nb3O5Cl7] (M = K, Rb, Cs) are deposited in the colder parts of evacuated glass tubes containing molten mixtures of MCl and NbOCl3 or MCl, Nb2O5 and NbCl5 in a temperature gradient of 500 °C to 450 °C for some days. Green crystals of (NH4)2[Nb3O5Br7] are obtained as a by‐product in the reaction of NH4Br with NbOBr3 in sealed ampoules at temperatures of 300 °C. All compounds are isotypic and belong to the M2[Nb3O5X7] structure type of which (NH4)2[Nb3O5Cl7] was already known (Schweda, 1997) (monoclinic, C2/c, Z = 4, (NH4)2[Nb3O5Br7] a = 17.8488(6), b = 8.8581(3), c = 11.3376(4) Å, β = 110.572(2)°; K2[Nb3O5Cl7] a = 16.7346(3), b = 8.8558(2), c = 11.0623(3) Å, β = 112.661(1)°; Rb2[Nb3O5Cl7] a = 16.794(14), b = 8.873(5), c = 11.032(8) Å, β = 111.33(6)°; Cs2[Nb3O5Cl7] a = 17.233(6), b = 8.928(3), c = 11.092(3), β = 109.36(2)°). The structures consist of niobium‐centred NbO3Cl3 and NbO4Cl2 octahedra, which share common edges to form a two‐dimensional network of the composition ${\rm [(Nb_{3}O_{5}} X_{7})^{2-}]^{2}_{\infty}$ (X = Cl, Br). These anionic layers are stacked with the cations located between them. The monovalent cations are coordinated exclusively by halogen atoms and have the coordination number ten in form of “edshammar polyhedra”.
Electrochemical Synthesis and Characterization of Cobalt(II), Cobalt(III), and Nickel(II) Complexes with Pyrimidine‐2‐thionato Ligands
Authors: Rodríguez A. , García‐Vázquez José Arturo , Romero J. , Sousa‐Pedrares A. , Sousa A. , Castro J. 
Published: April 2007

AbstractThe electrochemical oxidation of anodic metal (cobalt and nickel) in acetonitrile solutions of the appropriate pyrimidine‐2‐thione derivatives (RpymSH, where R = 4‐CF3, 4,6‐CF3Me, 4,6‐MePh, 4,6‐CF3Ph, 4,6‐Ph2) afforded complexes of composition [M(RpymS)2], M = Co, Ni or [Co(RpymS)3]. When 2,2′‐bipyridine (bipy) or 1,10‐phenanthroline (phen) was added to the electrolytic cell, adducts of cobalt(II) and nickel(II) compounds with these coligands were obtained: [M(RpymS)2bipy] and [M(RpymS)2phen]. All of the compounds were characterized by microanalysis, electronic, vibrational spectroscopy and FAB mass spectrometry, and, in the cases of the compounds [Co(RpymS)3], by 1H and 13C, NMR spectroscopy. The compound [Co(4‐CF3pymS)3] was also characterized by X‐ray diffraction. The crystal structure consists of monomeric molecules in which the central CoS3N3 unit has a slightly distorted octahedral coordination with the ligands adopting a meridional disposition.
Metal‐mediated Ring Opening Reaction of Two Aziridines to give 1,2‐Aminoaziridinoethane Ligands
Authors: Krinninger C. , Ruiz J. C. G. , Nöth H. , Lorenz I.‐P. 
Published: April 2007

AbstractThe reaction of 2,2′‐dimethylaziridine with the carbonyl halogenido complexes [(CO)5MX] (M = Mn; X = Cl, I; M = Re: X = I) results in the formation of the 1,2‐aminoaziridinoethane complexes [(CO)3XM{NH2CMe2CH2N(C2H2Me2)}]. The bis(2,2′‐dimethylaziridine) complexes [(CO)3XM(NHCH2CMe2)2] may act as intermediates. The new asymmetric chelate ligand is the formal dimerization product of 2,2′‐dimethylaziridine, which is formed and stabilized in the coordination sphere of both transition metals. The new complexes have been characterized using elemental analysis, mass, IR and NMR spectra as well as by X‐ray structure analysis. The metal centers exhibit a distorted octahedral configuration with a facial (CO)3M‐arrangement, and the 5‐membered metallacycles show a twist conformation and lie in the trans‐positions with respect to the CO ligands in the equatorial plane. Whereas the Mn‐N bonds to the intact aziridine system are longer (213.3 and 213.8 pm) than those to the NH2 group (206.5 and 207.4 pm), the corresponding Re–N bonds show the opposite trend, whereby the Re–NH2 bonds are shorter (219.0 and 225.8 pm).
The Anions [B24H23]3− and [B36H34]4− from the Thermal Protolysis of [B12H12]2−
Authors: Paetzold Peter , Bettinger Holger F. , Volkov Oleg 
Published: April 2007

AbstractThe thermolysis of the hydrated free acids [H(H2O)m]2[BnHn] (n = 12, 11, 10) is described. The anion [B12H12]2− is transformed into [B24H23]3− at 80 °C and into [B36H34]4− at 90 °C, with [B12H11(OH)]2− as a side‐product. The novel anion [B36H34]4−, isolated after neutralization as a salt with the cation NMe4, is considered by NMR arguments to consist of two icosahedral B12H11 units connected to a central B12H10 unit by BHB bridges. According to an ab initio computation, the two or three icosahedral cages of [B24H23]3− and [B36H34]4−, respectively, are connected by bent BHB‐bridges in the ground‐state. Upon acidification, the anion B11H112− is transformed into nido‐[B11H13(OH)]−, which is completely degraded, when water is removed from the solution of the free acid. The anion [B10H10]2− is degraded into the arachno‐[B9H14]− anion, when the free acid is heated (100 °C) in the presence of oxalic acid.
The High‐Temperature Phases HT‐YPtSn, HT‐GdPtSn, and HT‐TbPtSn
Authors: Freerks Riecken Jan , Heymann Gunter , Huppertz Hubert , Pöttgen Rainer 
Published: April 2007

AbstractThe TiNiSi type high‐temperature (HT) modifications of YPtSn, GdPtSn, and TbPtSn were obtained by rapidly quenching arc‐melted samples. They were investigated by X‐ray diffraction on powders and single crystals: Pnma, a = 716.0(1), b = 453.53(9), c = 795.1(1) pm, wR2 = 0.0432, 419 F2 values for HT‐YPtSn, a = 721.1(6), b = 455.6(4), c = 789.6(8) pm, wR2 = 0.0598, 802 F2 values for HT‐GdPtSn, and a = 716.4(2), b = 453.7(2), c = 794.1(3) pm, wR2 = 0.0390, 629 F2 values for HT‐TbPtSn, with 20 variables per refinement. HT‐YPtSn, HT‐GdPtSn, and HT‐TbPtSn transform to the ZrNiAl type low‐temperature modifications (space group $P{\bar 6}{\rm 2}m$; reconstructive phase transition) by annealing for five days at 800 °C. In all three compounds, the platinum and tin atoms build up three‐dimensional [PtSn] networks (267–284 pm Pt‐Sn in HT‐YPtSn) in which the rare earth metal atoms occupy distorted hexagonal channels.