bluuebunny/crossref_metadata_2025_split huggingface dataset:
Die Kristallstruktur von AsF5 · / The Crystal Structure of AsF5 ·
Authors: Lork Enno , Behrens Ulrich , Viets Detlef , Mews Rüdiger 
Published: February 2015

Abstract
The crystal structure of AsF5 ·

is reported. It crystallizes in the orthorhombic space group Pnma with a = 749.1(3) pm, b = 770.6(3) pm and c = 1630.0(5) pm, V = 960.9(6) · 106 pm3, Z = 4.
Cd0,73Cu0,27V2O6: Eine Verbindung mit Branneritstruktur / Cd0 ,73Cu0,27V2O6: A Compound with Brannerite Structure
Authors: Münchau S. , Müller-Buschbaum Hk. 
Published: February 2015

Abstract
Single crystals of Cd0.73Cu0.27V2O6 were prepared by solid state reactions. X-ray investigations lead to monoclinic symmetry, space group C3
2h-C2/m , a = 9.339, b = 3.5604, c = 6.893 Å, β = 111.85°, Z = 2. It belongs to the Brannerite structure, showing a statistical distribution of Cd2+ and Cu2+ on one point position. The crystal structure of Brannerites is discussed with respect to the distorted O2- octahedra around V5+ and the influence of the Jahn-Teller active Cu2+ ion to the shortened M2+O6 octahedra.
Kristallstruktur von (Ph3PNH2)4[Sb6O10Cl14] · 2CH3CN / Crystal Structure of (Ph3PNH2)4[Sb6O10Cl14]-2CH3CN
Authors: Fenske Dieter , Garbe Ralf , Dehnicke Kurt 
Published: February 2015

Abstract
The title compound has been obtained by the reaction of the phosphoraneiminato complex Cl2Sb(NPPh3) with chlorine, followed by partial hydrolysis in acetonitrile. The colourless crystals were characterized by a crystal structure determination. Space group P1̅, Z = 2, structure refine­ment with 8320 observed unique reflections, R = 0.063 with I > 2σ(I). Lattice dimensions at -70 °C: a = 1245.0(6); b = 1277.7(8), c = 1623.8(9) pm, a = 77.97(2)°, β = 86.52(2)°, γ = 67.07(2)°. The compound consists of Ph3PNH2
+ ions, [Sb6O10Cl14]4-ions, in which the central unit is a Sb4O6 skeleton with a double heterocubane-like arrangement with two missing corners, and of in­ cluded acetonitrile molecules without bonding interactions.
Cu6Br6(NPMe3)4, ein gemischt-valenter Kupfercluster / Cu6Br6(NPMe3)4, a Mixed-Valent Cluster of Copper
Authors: Köcker Rolf Meyer zu , Dehnicke Kurt , Fenske Dieter 
Published: February 2015

Abstract
Cu6Br6(NPMe3)4 has been prepared as a by-product from the reaction of CuBr with Me3SiNPMe3 in a CH2Cl2 suspension. The dark red-violet crystals, which contain three molecules CH2Cl2 per unit cell, have been characterized by a crystal structure determination.
Cu6Br6(NPMe3)4 · 3 CH2Cl2: Space group P1̅, Z = 2, lattice dimensions at -95 °C: a = 1165.2(4), b = 1168.9(4), c = 1842.9(6) pm, a = 75.61(3)°, β = 84.15(3)°, γ = 61.08(2)°, 6918 observed unique reflections, R = 0.066. In the cluster molecule Cu6Br6(NPMe3)4 the copper atoms form a nearly ideal octahedron with Cu-Cu bond lengths of 268.8 pm in average. Each of the Cu atoms is con­nected with a terminal bromine atom. Four planes of the octahedron are capped by μ3-nitrogen atoms of the (NPMe3)- groups.
Molekül- und Kristallstruktur der Verbindung 8-(n-Butylaminophenyl- methyliden)-1,2,3,4,5,6,7-heptathiocan / Molecular and Crystal Structure of 8-(n-Butylaminophenyl- methylidene)-1,2,3,4,5,6,7-heptathiocane
Authors: Heinemann Frank W. , Hartung Helmut , Maier Nadja , Matschiner Hermann 
Published: February 2015

By the reaction of acetophenone with sulfur and primary amines yellow-coloured crystals of the title compound are formed. It crystallizes in the monoclinic space group P21/n with lattice constants a = 1309.9(2) pm, b = 926.5(2) pm, c = 1582.2(2) pm and β = 114.00(1)°. The structure of the eight-membered heptathiocane ring is characterized by a crown confor­mation.
The range of the S-S distances [204.4(1)-207.3(1) pm], the S-S-S bond angles [107.2(1)- 109.0(1)°] and the S-S-S-S torsion angles [93.2(1)-97.7(1)°] is comparable to those observed in α-, β- and γ-sulfur.
Darstellung und Strukturen von 2,2,4,4-Tetrafluor-1,3-diphosphetanen und -1,3-diphosphetan-disulfiden / Synthesis and Structures of 2,2,4,4-Tetrafluoro-1,3-diphosphetanes and of -1,3-diphosphetane Disulfides
Authors: Fild Manfred , Jones Peter G. , Ruhnau Karsten , Thöne Carsten 
Published: February 2015

Abstract
A simple route to 1,3-diphosphetanes [RPCF2]2 [R = Ph, Me, But] is described. The phosphaalkene intermediates RP=CF2, as well as the corresponding disulfides [R(S)PCF2]2 have been characterized. The crystal structures of [PhPCF2]2, and of the sulfides [Ph(S)PCF2]2 and [But(S)PCF2]2 are reported.
Synthese, Kristallstruktur und Eigenschaften von Tetraaminophosphoniumiodid [P(NH2)4]I / Synthesis, Crystal Structure, and Properties of Tetraaminophosphonium Iodide [P(NH2)4]I
Authors: Horstmann Stefan , Schnick Wolfgang 
Published: February 2015

Abstract
The title compound has been prepared starting from phosphorothionic triamide SP(NH2)3 by methylation of the sulfur atom and subsequent ammonolysis reaction in dry acetonitrile and dichloromethane, respectively, both at room temperature. Suitable single crystals are obtained from an acetonitrile solution in a temperature gradient between 70 °C and room temperature. The crystal structure of [P(NH2)4]I has been determined by single crystal X-ray methods (P4/nbm; a = 842.6(2), c = 486.7(2) pm, Z = 2). In the solid [P(NH2)4]+ - and I−-ions are found with significant N - H···I-hydrogen bonding interactions between anions and cations (H -I: 276.4 pm). The P - N - bond length in the cation (160.7(2) pm) represents the shortest P - NH2 bond distance reported to date indicating a significant electrostatic strengthening. The condensation behaviour of [P(NH2)4]I in solution and in the solid has been investigated.
A Novel Entry into Cyclopropanated Sugar Amino Acids
Authors: Fakhar-uz-Zaman  , Fatima Ayjaz , Malik Abdul , Voelter Wolfgang 
Published: February 2015

Abstract
Reaction of sugar triflates (1) and (2) with tert-butyl cyanoacetate in presence of sodium hydride affords the cyclopropanated sugars (3) and (4), followed by selective hydrolysis of the ester group to free acids (5) and (6), respectively. Couplings of (5) and (6) with protected glycine and L-alanine lead to cyclopropanated sugar amino acids (7-10). The coupling of 6 with benzyl 3,4-(“exo”-aminomethyl)methano-3,4-dideoxy-β-L-arabinopyranoside (11) fur­ nished benzyl 3,4-[(C-cyano-amido)methano-(benzyl 3,4-(“exo”-methylene)methano-3,4-di-deoxy-β-L-arabinopyranosido)]-3,4-dideoxy-β-L-arbinopyranoside (12), suggesting an “exo” orientation of the ester group in 3 and 4.
Zur Chemie von Flechten aus der Türkei. Struktur von Nemetzon, dem Apothecienpigment von Haematomma nemetzii / On the Chemistry of Lichens from Turkey. Structure of Nemetzon, the Pigment of the Apothecia from Haematomme nemetzii
Authors: Huneck Siegfried , Himmelreich Uwe , Schmidt Jürgen , John Volker , Zeybek Ulvi 
Published: February 2015

Abstract
The lichens Haematomma nemetzii, a Ramalina species, and Tornabena scutellifera from Turkey have been analysed chemically. Nemetzon is a new anthraquinone from the apothecia of Haematomma nemetzii.
π-π Interactions between Pyrylium and Phenyl Rings in the Crystal
Authors: Balaban Teodor Silviu , Furmanova Nina G. 
Published: February 2015

Abstract
The crystal structures of two isomeric phenyl-substituted pyrylium perchlorates, 2,6-di-methyl-4-phenylpyrylium (1) and 2,4-dim ethyl-6-phenylpyrylium (2), have been determined. Both cations are planar in the crystal so that the electron deficient pyrylium rings can interact strongly with the phenyl rings of adjacent molecules forming stacks along the shortest crystallographic axis. The phenyl rings may act as donors in a charge transfer interaction which is more pronounced in 1 than in 2. Charge transfer appears as a non-mandatory consequence of the π-π stacking. The structures demonstrate the electrostatic nature of these interactions conforming to the model of Hunter and Sanders [ 1 ].
Weitere Verbindungen des Ba17Ln16Zn8Pt4O57- Typs mit Ln = Dy, Ho, Er, Y / More Compounds of the Ba17Ln16Zn8Pt4O57 Type with Ln = Dy, Ho, Er, Y
Authors: Sfreddo O. , Müller-Buschbaum Hk. 
Published: February 2015

Abstract
Single crystals of Ba17Dy16Zn8Pt4O57 (I), Ba17Ho16Zn8Pt4O57 (II), Ba17Er16Zn8Pt4O57 (III) and Ba17YZn8Pt4O57 (IV) have been prepared by high temperature reactions using platinum crucibles. X-ray investigations led to tetragonal symmetry, space group C5
4h - I4/m, (I) - (IV): a = 22.905(1), 22.840(1), 22.795(1), 22.848(1) Å and c = 5.728(1), 5.722(1), 5.700(1), 5.709(1) Å,Z = 2. The crystal structure is characterized by small square, medium-sized quadrangular and large rectangular tunnels, which are filled by oxygen, barium and zinc. The polyhedra network is discussed with respect to the network of compounds of the Ba13Dy8Zn4Pt4O37 type.
Neue dikationische Silicium-Komplexe mit N-Methylimidazol/New Dicationic Silicon Complexes with N-Methylimidazole
Authors: Hensen Karl , Kettner Markus , Pickel Peter , Bolte Michael 
Published: February 2015

The reactions of the dibromosilanes Et2SiBr2, Ph2SiBr2, EtHSiBr2, PhHSiBr2 and MeHSiBr2 with N-methylimidazole (NMI) led to white powders stable at room temperature (with Et2SiBr2 an 1:2 adduct, with EtHSiBr2 and Ph2SiBr2 1:3 adducts, and with PhHSiBr2 and MeHSiBr2 1:4 adducts).
The compounds crystallize from solutions in chloroforme and acetonitrile. The X-ray single crystal investigations show in all five cases dicationic complexes.
Crystal Structure and Magnetic Properties of a Linear Trinuclear Ni(II) Complex
Authors: Kavlakoglu E. , Eimali A. , Elerman Y. , Werner R. , Svoboda I. , Fuess H. 
Published: February 2015

Abstract
Linear Trinuclear Nickel(II) Complex, Super-Exchange Interactions, Antiferromagnetic Coupling [Ni3(C2H32(CH3O)2L2] [L = 13-bis(5-chlorosalicylideneamino)propan-2-ol dianion, (C2H3O2)- = acetate, (CH3OH) = methanol] was synthesized and its crystal structure was determined. It crystallizes in the monoclinic spaceeroup P21 /n with a = 12.694(2), b = 13.281 (4), c = 15.420(3) Å, β = 111.25(2)°, V = 2422.9(9) Å3 ,Z = 2 . The molecule is a "linear" trinuclear complex with nearly octahedral coordination of each nickel ion. Adjacent nickel(II) ions are bridged by the phenolic oxygen atoms of the ligands and the oxygen atoms of the acetato ligands. The coordination sphere of the terminal nickel(II) ions is completed by the oxygen atom of the methanol. Adjacent nickel(II) centers are separated by 3.043(1) Å and weakly antiferromagnetically coupled (J1 = -3 .4 cm-1). The terminal nickel(II) centers are separated by 6.086(1) Å and very weakly antiferromagnetically coupled (J2 = -0 .3 cm-1) which follows from temperature-dependent magnetic susceptibility measurements in the temperature range 4.5 to 318 K. The magnetic moment rises from 2.99 μB at 4.5 K to 5.42 μB at 318 K. In the X(T) curve no characteristic maximum was observed.
Spectro-Electrochemistry of Diethyldithiocarbamate Complexes of Ni(II), Pd(II) and Pt(II)
Authors: Yaman Şeniz Özalp , Önal Ahmet M. , Isci Hiüseyin 
Published: February 2015

Abstract
The electrochemical behaviour of Na(Et2NCS2) and M(Et2NCS2)2 (M= Ni(II), Pd(II) and Pt(II); Et2NCS2
-= diethyldithiocarbamate) as studied by cyclic voltammetry in the acetonitrile-( n-Bu)4NBF4 solvent-electrolyte couple at room temperature vs. Ag/Ag+ reference electrode. Constant potential electrolyses of the complexes were carried out at their first oxidation peak potentials and monitored in situ by UV-VIS spectrophotometry. The electrolysis of Ni(Et2NCS2)2 in solution yielded the dimer of the ligand, (Et2NCS2)2, and Ni2+(sol) as final products. During this electrochemical process the formation of a Ni(III) complex species as an intermediate has been observed. The electrochemical oxidation of bis(diethyldithiocarbamato) complexes of Pd(II) and Pt(II) yielded [Pd(Et2NCS2)3]+ and [Pt(Et2NCS2)3]+, respectively.
Untersuchungen an Polyhalogeniden, XXXXII [1]. Das Pentaiodid-Ion I5
-; Eine Übersicht: Darstellung und Kristallstruktur der Verbindung [Rb(C16H24O6)](I5) · H2O
Authors: Pantenburg Ingo , Tebbe Karl-Friedrich 
Published: February 2015

Abstract
[Rb(benzo-18-crown-6)](I5) H2O could be prepared by the reaction of benzo-18-crown-6, rubidium iodide, and iodine in ethanol / dichloromethane. It crystallizes in the monoclinic space group P21/a with a = 1881.8(3), b = 1439.0(2), c = 2269.0(3) pm, ß = 111.24(1)° and Z = 8. The crystal structure was refined to RF = 0.038 for 5310 reflections. It contains two independent molecules. The two cations and the coordinating water molecules form a zigzag chain running along [100] paralleled by two structurally similar pentaiodide chains with one leg of the V-shaped pentaiodide ion forming the backbone of the chain. In both cases the other leg stands out in a novel fashion without forming a coplanar cis or trans configuration known from other pentaiodides. Anionic motifs of other crystalline pentaiodides are summarized and discussed.
Dependence of the Distortion of the Square Pyramids in N, N-Dimethylethylenediammonium Pentachloroantimonate(III) on the Geometry of Hydrogen Bonds
Authors: Bujak Maciej , Zaleski Jacek 
Published: February 2015

Abstract
N ,N-Dimethylethylenediammonium pentachloroantimonate(III) crystallizes in the monoclinic system, in space group P21/c (a = 12.460(2), b = 10.252(2), c = 10.330(2) Å, β = 97.75(3)°, V = 1307.5(4) Å3, Z = 4, dc = 1.997, dm = 1.99(2) g/cm3). The crystal structure of [(CH3)2NH(CH2)2NH3][SbCl5] consists of isolated [SbCl5]2- anions and [(CH3)2NH(CH2)2NH3]2+ cations. The [SbCl5]2- anion has a distorted square pyramidal geometry, presenting one short axial and four long equatorial Sb-Cl bonds. The square pyramids are characteristically stacked one close to the other, parallel to the c axis. The voids between the anionic sublattice are filled by [(CH3)2NH(CH2)2NH3]2+ cations. The five non-equivalent Sb-Cl bond distances within the [SbCl5]2- square pyramid are significantly different. The equatorial Sb-Cl bonds are in the range 2.427(2)-2.968(2) Å, whereas the axial one is 2.384(1) Å long. The study reveals that N-H...C1 hydrogen bonds are responsible for the deformation of equatorial Sb-Cl bonds from the mean value of 2.654(7) Å. Analysis of intermolecular interactions between the [SbCl5]2- pyramids in the structure, reflected in changes of Sb-Cl bond lengths from the values characteristic of non-interacting pyramids, leads to the conclusion that the van der Waals radius of Sb is significantly smaller than that estimated by Pauling.
New Coordination Compounds Derived from Nitrone Ligands: Copper(II) Complexes with 8-Hydroxyquinoline-2-carbaldehyde- and Pyridine-2-carbaldehyde-N-methylnitrones
Authors: Petkova Elena G. , Domasevitch Konstantin V. , Gorichko Marian V. , Zub Vera Y. , Lampeka Rostislav D. 
Published: February 2015

Abstract
New copper(II) complexes with 8-hydroxyquinoline-2-carbaldehyde-N-methylnitrone (HL1) (1) and pyridine-2-carbaldehyde-N-methylnitrone (L2) (2) have been synthesized. The crystal structure of compound 1 consists of binuclear molecules Cu2(L1)2(NO3)2 with the oxygen atoms of the hydroxy groups acting as bridges between the copper ions. The nitrone ligand in 1 is coordinated in a tridentate fashion forming five-and six-membered chelate rings, and the copper ions have a square-pyramidal environment with the bridging oxygen atoms in apical positions. In compound 2 Cu(L2)2(NO3)2, the copper atom adopts a distorted octahedral environment with bidentately coordinated nitrone ligands. In both cases the nitrone groups are involved in coordination via the oxygen atom. Compounds 1 and 2 have been studied by EPR, UV-VIS and IR spectroscopy. The free nitrone HL1 has also been studied by X-ray diffraction as well as by IR and UV spectroscopy.
Global Diversity Lines–A Five-Continent Reference Panel of SequencedDrosophila melanogasterStrains
Authors: Grenier Jennifer K , Arguello J Roman , Moreira Margarida Cardoso , Gottipati Srikanth , Mohammed Jaaved , Hackett Sean R , Boughton Rachel , Greenberg Anthony J , Clark Andrew G 
Published: February 2015

AbstractReference collections of multiple Drosophila lines with accumulating collections of “omics” data have proven especially valuable for the study of population genetics and complex trait genetics. Here we present a description of a resource collection of 84 strains of Drosophila melanogaster whose genome sequences were obtained after 12 generations of full-sib inbreeding. The initial rationale for this resource was to foster development of a systems biology platform for modeling metabolic regulation by the use of natural polymorphisms as perturbations. As reference lines, they are amenable to repeated phenotypic measurements, and already a large collection of metabolic traits have been assayed. Another key feature of these strains is their widespread geographic origin, coming from Beijing, Ithaca, Netherlands, Tasmania, and Zimbabwe. After obtaining 12.5× coverage of paired-end Illumina sequence reads, SNP and indel calls were made with the GATK platform. Thorough quality control was enabled by deep sequencing one line to &gt;100×, and single-nucleotide polymorphisms and indels were validated using ddRAD-sequencing as an orthogonal platform. In addition, a series of preliminary population genetic tests were performed with these single-nucleotide polymorphism data for assessment of data quality. We found 83 segregating inversions among the lines, and as expected these were especially abundant in the African sample. We anticipate that this will make a useful addition to the set of reference D. melanogaster strains, thanks to its geographic structuring and unusually high level of genetic diversity.
Adhesion and Cell Viability of Normal Human Osteoblasts (NHOst) on Scaffolds of Poly (3-hydroxybutyrate)
Authors: Domínguez-Díaz Maraolina , Meneses-Acosta Angelica , Romo-Uribe Angel 
Published: February 2015

ABSTRACTBiodegradable Normal Human Osteoblast (NHOst) cells were inoculated into the polymer scaffolds of poly(β-hydroxybutyrate) (PHB) obtained from a specially developed strain of Azotobacter vinelandii. Cell adhesion is essential to promote growth on scaffolds for tissue engineering. Thus, in this research we focused on the adhesion of osteoblast cells to PHB scaffolds produced by solution casting and electrospinning. Cell viability was also investigated up to 168 hrs. Water contact angle on the PHB scaffolds was determined prior to the cells inoculation. The contact angle is usually related to the ability of different cell strains to adhere to a given material. The as cast film exhibited a contact angle α=72° whereas for the electrospun membrane α=102°, thus in theory cell adhesion would be greater for the cast film. Biological testing was carried out on plates of 24 wells; cell viability was determined by Trypan Blue, cell morphology by optical microscopy, and cell nuclei integrity by staining with Acridine orange. Parallel studies were carried out on control (empty) wells. Microscopy observations 168 hrs after cell inoculation showed larger quantities of osteoblast cells in the wells containing PHB scaffolds and the cell nuclei were still active. Moreover, it was found that the cells grew inside the PHB scaffolds and the cell viability was slightly greater for the electrospun scaffold. Interestingly, the time to remove the cells from the scaffolds (film and membranes) was increasing function of the cell culture time, therefore suggesting that PHB promotes adhesion of Normal Human Osteoblast cells to its surface.
HVPE GaN with Low Concentration of Point Defects for Power Electronics
Authors: Reshchikov M. A. , McNamara J.D. , Usikov A. , Helava H. , Makarov Yu. 
Published: February 2015

ABSTRACTWe have studied photoluminescence (PL) from undoped GaN films grown by HVPE technique on sapphire. Several defect-related PL bands are observed in the low-temperature PL spectrum. The concentrations of the defects responsible for these PL bands are determined from the dependence of PL intensity on excitation intensity. The RL band with a maximum at 1.8 eV is often the dominant PL band in HVPE GaN. It is caused by an unknown defect with the concentration of up to ∼1017 cm-3. The concentrations of defects responsible for other defect-related PL bands rarely exceed 1015 cm-3.
Incompatibility of Martensite Variant Clusters in Self-accommodation Microstructure in Ti-Ni-Pd High Temperature Shape Memory Alloy
Authors: Teramoto Takeshi , Tahara Masaki , Hosoda Hideki , Inamura Tomonari 
Published: February 2015

ABSTRACTThe formation frequency of habit plane variant (HPV) clusters in Ni-25Pd-50Ti shape memory alloy was analyzed using electron backscattering diffraction (EBSD) on the basis of the geometrically nonlinear theory of martensite. Two types of cluster, diamond and wedge, were most commonly observed. The ratio of the formation frequency of the diamond to wedge clusters was approximately 1 : 3, whereas the rotation to keep the kinematic compatibility (KC) condition,θ*, was 3.9° and 0.0032°, respectively. The ratio of the formation frequency is quantified by the value ofθ* which is an indicator of the incompatibility of the cluster. The origin of the diamond cluster is discussed based on the degree of incompatibility.
Advancing the Use of Evidence-Based Decision-Making in Local Health Departments With Systems Science Methodologies
Authors: Li Yan , Kong Nan , Lawley Mark , Weiss Linda , Pagán José A. 
Published: February 2015

Objectives. We assessed how systems science methodologies might be used to bridge resource gaps at local health departments (LHDs) so that they might better implement evidence-based decision-making (EBDM) to address population health challenges. Methods. We used the New York Academy of Medicine Cardiovascular Health Simulation Model to evaluate the results of a hypothetical program that would reduce the proportion of people smoking, eating fewer than 5 fruits and vegetables per day, being physically active less than 150 minutes per week, and who had a body mass index (BMI) of 25 kg/m2 or greater. We used survey data from the Behavioral Risk Factor Surveillance System to evaluate health outcomes and validate simulation results. Results. Smoking rates and the proportion of the population with a BMI of 25 kg/m2 or greater would have decreased significantly with implementation of the hypothetical program (P < .001). Two areas would have experienced a statistically significant reduction in the local population with diabetes between 2007 and 2027 (P < .05). Conclusions. The use of systems science methodologies might be a novel and efficient way to systematically address a number of EBDM adoption barriers at LHDs.
Effect of Systems Change and Use of Electronic Health Records on Quit Rates Among Tobacco Users in a Public Hospital System
Authors: Moody-Thomas Sarah , Nasuti Laura , Yi Yong , Celestin Michael D. , Horswell Ronald , Land Thomas G. 
Published: February 2015

Objectives. We examined electronic health records (EHRs) to assess the impact of systems change on tobacco use screening, treatment, and quit rates among low-income primary care patients in Louisiana. Methods. We examined EHR data on 79 777 patients with more than 1.2 million adult primary care encounters from January 1, 2009, through January 31, 2012, for evidence of systems change. We adapted a definition of “systems change” to evaluate a tobacco screening and treatment protocol used by medical staff during primary care visits at 7 sites in a public hospital system. Results. Six of 7 sites met the definition of systems change, with routine screening rates for tobacco use higher than 50%. Within the first year, a 99.7% screening rate was reached. Sites had a 9.5% relative decrease in prevalence over the study period. Patients were 1.03 times more likely to sustain quit with each additional intervention (95% confidence interval = 1.02, 1.04). Conclusions. EHRs can be used to demonstrate that routine clinical interventions with low-income primary care patients result in reductions in tobacco use and sustained quits.