B. Koleva

发表

Spectroscopic and structural elucidation of amino acid derivatives and small peptides: experimental and theoretical tools

M. Spiteller, T. Kolev, B. Koleva, 2010, Amino Acids.

Polarized spectroscopic elucidation of N-acetyl-l-cysteine, l-cysteine, l-cystine, l-ascorbic acid and a tool for their determination in solid mixtures

M. Spiteller, T. Kolev, B. Koleva, 2009, Amino Acids.

Synthesis, spectroscopic and structural elucidation of tyrosinamide hydrogensquarate monohydrate

M. Spiteller, T. Kolev, B. Koleva, 2009, Amino Acids.

Structural and spectroscopic analysis of hydrogensquarates of glycine-containing tripeptides.

M. Spiteller, T. Kolev, B. Koleva, 2006, Biopolymers.

Determination of phenacetin and salophen analgetics in solid binary mixtures with caffeine by infrared linear dichroic and Raman spectroscopy.

M. Spiteller, T. Kolev, B. Koleva, 2008, Journal of pharmaceutical and biomedical analysis.

Novel codeinone derivatives via Michael addition of barbituric acids

Iris M. Oppel, M. Spiteller, B. Koleva, 2009 .

1-Methyl-4-[2-(3-methoxy-4-hydroxyphenyl)ethenyl)]pyridinium] hydrogensquarate monohydrate: synthesis, structural investigations and optical properties

M. Spiteller, T. Kolev, B. Koleva, 2009 .

Synthesis, spectroscopic and structural elucidation of 1-butyl-4-[2-(3,5-dimethoxy-4-hydroxyphenyl)ethenyl)]pyridinium chloride tetrahydrate.

M. Spiteller, T. Kolev, B. Koleva, 2009, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

Novel organic material with potential NLO application - electronic and spectroscopic properties

M. Spiteller, T. Kolev, B. Koleva, 2008 .

The aggregation of the merocyanine dyes, depending of the type of the counterions.

M. Spiteller, T. Kolev, B. Koleva, 2008, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

Crystal structure, IR-LD spectroscopic, theoretical and vibrational analysis of valinamide ester amide of squaric acid diethyl ester

M. Spiteller, T. Kolev, B. Koleva, 2006 .

Spectroscopic and structural elucidation of 3,4-diaminopyridine and its hydrogentartarate salt: Crystal structure of 3,4-diaminopyridinium hydrogentartarate dihydrate

T. Kolev, B. Koleva, R. W. Seidel, 2008 .

Crystal structure, optical and magnetic properties of the bis(perchlorate) of 3,4-diaminopyridine

T. Kolev, B. Koleva, R. W. Seidel, 2008 .

Polymorphs of Aspirin Solid-state IR-LD spectroscopic and quantitative determination in solid mixtures

B. Koleva, 2006 .

Synthesis, spectroscopic and structural elucidation of sympathomimetic amine, tyraminium dihydrogenphosphate

M. Spiteller, T. Kolev, B. Koleva, 2009, Amino Acids.

Two novel violurate and squarate salts of cinchonine – Structures and physical properties

M. Spiteller, T. Kolev, B. Koleva, 2010 .

Crystal structure and spectroscopic elucidation of 3-phenylpyridinium hydrogensquarate.

M. Spiteller, T. Kolev, B. Koleva, 2010, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

Hydrogensquarates of 3-nicotinoyl and 3-isonicotinoyl coumarin--crystal structures and spectroscopic elucidation.

M. Spiteller, T. Kolev, B. Koleva, 2009, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

N-methylcodeinium iodide--crystal structure and spectroscopic elucidation.

M. Spiteller, T. Kolev, B. Koleva, 2009, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

Hydrogenoxalate and squarate salts of ( E )-4-(hydroxyiminomethyl)-pyridine – Crystal structures, spectroscopic and theoretical elucidation

Iris M. Oppel, T. Kolev, B. Koleva, 2009 .

Esters of 1-coumarinylbenzylphosphonic acid-IR-spectroscopic and theoretical elucidation.

T. Kolev, B. Koleva, R. Nikolova, 2009, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

Solid-State Spectroscopic and Structural Elucidation of L-Phenylalanyl-L-alanine Dihydrate and Its Hydrochloride

M. Spiteller, T. Kolev, B. Koleva, 2009 .

Monoclinic and triclinic polymorphs of 2-{5,5-dimethyl-3-[2-(2,4,6-trimethoxyphenyl)vinyl]cyclohex-2-enylidene}malononitrile-solid-state linear-polarized IR-spectroscopy, DFT calculations and vibrational analysis.

T. Kolev, B. Koleva, 2008, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

Ethyl esters of coumarin-3-phosphonic acid and 1,2-benzoxaphosphorine-3-carboxylic acid: crystal structure, spectroscopic and theoretical elucidation

T. Kolev, B. Koleva, W. Sheldrick, 2008 .

New Au(III), Pt(II) and Pd(II) complexes with glycyl-containing homopeptides

M. Spiteller, T. Kolev, B. Koleva, 2008 .

Synthesis, spectroscopic analysis and structure deduction of gold(III), palladium(II) and platinum(II) complexes with the tripeptide glycyl-l-phenylalanyl-glycine

M. Spiteller, T. Kolev, B. Koleva, 2008 .

Synthesis, spectroscopic, structural and theoretical characterization of hydrogensquarate and mononuclear Au(III)-complex of dipeptide phenylalanyltyrosine

M. Spiteller, T. Kolev, B. Koleva, 2008 .

On the tautomerism of 1-phenyl-3-substituted-pyrazol-5-ones and their photoinduced products — experimental and theoretical UV spectral analysis

B. Koleva, I. Petkov, A. Chapkanov, 2008 .

Solid-state IR-LD spectroscopy of L-tryptophan-containing dipeptides L-tryptophyl-L-methionine (H-Trp-Met-OH), L-methionyl-L-tryptophan (H-Met-Trp-OH) and glycyl-L-tryptophan dihydrate (H-Gly-Trp-OH.2H2O)

B. Koleva, 2008 .

Mononuclear Au(III)-complexes with tryptophan-containing dipeptides: Synthesis, spectroscopic and structural elucidation

M. Spiteller, T. Kolev, B. Koleva, 2007 .

Spectroscopic, theoretical and structural characterization of hydrogensquarates of l-threonyl-l-serine and l-serine

M. Spiteller, T. Kolev, B. Koleva, 2007, Amino Acids.

Au(III)-complexes of the alanyl-containing peptides glycylalanine and glycylalanylalanine - : Synthesis, spectroscopic and structural characterization

M. Spiteller, T. Kolev, B. Koleva, 2006 .

Benzamidinium acetylsalicylate: crystal structure of the first salt with acetylsalicylate anion

M. Spiteller, T. Kolev, B. Koleva, 2009 .

Benzamidinium d-glucuronate: Spectroscopic and structural elucidation

M. Spiteller, T. Kolev, B. Koleva, 2008 .

New Aspects on the Origin of Color in the Solid State. Coherently Shifting of the Protons in Violurate Crystals

M. Spiteller, T. Kolev, B. Koleva, 2009 .

1,10-Phenanthrolinium hydrogensquarate monohydrate--a non-centrosymmetric structure from two non-chiral agents.

M. Spiteller, T. Kolev, B. Koleva, 2009, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

Coordination ability of 3-pyridinyl coumarins with palladium(II) and platinum(II)

B. Koleva, R. Nikolova, 2009 .

Polymorphs of 4-(dihydroxymethyl)pyridinium hydrogensquarate – Crystal structures and spectroscopic properties

M. Spiteller, T. Kolev, B. Koleva, 2009 .

Novel pyridyl‐substituted coumarin and its perchlorate salt–crystal structure and spectroscopic properties

T. Kolev, B. Koleva, R. W. Seidel, 2009 .

Anyles of 4-benzoylpyridine – Crystal structure and spectroscopic properties

M. Spiteller, T. Kolev, B. Koleva, 2009 .

Crystal structures and spectroscopic properties of ester amide and diamide of squaric acid with prolinamide.

M. Spiteller, T. Kolev, B. Koleva, 2009, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

New structural motifs and properties of squaric acid anions in the presence of the l-lysinium counterion

M. Spiteller, T. Kolev, B. Koleva, 2009 .

Crystal structure and spectroscopic properties of 4-acetaminopyridine and its protonated form

M. Spiteller, T. Kolev, B. Koleva, 2009 .

Structural elucidation, optical, magnetic and nonlinear optical properties of oxystyryl dyes.

M. Spiteller, T. Kolev, B. Koleva, 2009, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

l-Leucinamide hydrogensquarate: spectroscopic and structural elucidation

M. Spiteller, T. Kolev, B. Koleva, 2009, Amino Acids.

Spectroscopic and structural elucidation of merocyanine dye 2,5-[1-metyl-4-[2-(4-hydroxyphenyl)ethenyl)]piridinium]-hexane tetraphenylborate aggregation processes.

M. Spiteller, T. Kolev, B. Koleva, 2008, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

Spectroscopic and structural elucidation of 4-dimethylaminopyridine and its hydrogensquarate.

M. Spiteller, T. Kolev, B. Koleva, 2008, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

Substituted Esters of Coumarin-3-phosphonic Acid—Linear-Polarized IR-Spectroscopic Elucidation

T. Kolev, B. Koleva, A. Bojilova, 2008 .

Spectroscopic Elucidation of the Coordination Ability of 2-Oxo-2H-Chromene-3-Phosphonic Acid with Pt(II)

B. Koleva, R. Nikolova, S. Zarewa, 2008 .

Bis(tyrammonium) sulfate dihydrate: Crystal structure, solid-state IR-spectroscopic and theoretical characterization

M. Spiteller, T. Kolev, B. Koleva, 2008 .

The crystal structure and optical properties of 1-methyl-4-[2-(4-hydroxyphenyl)ethenyl]pyridinium dihydrogenphosphate: New aspects on crystallographic disorder and its effect on polarized solid-state IR spectra

M. Spiteller, T. Kolev, B. Koleva, 2008 .

Copper(II) complexes with hydroxyl-containing dipeptides glycyl- L -serine and L -seryl- L -tyrosine

M. Spiteller, T. Kolev, B. Koleva, 2008 .

Oriented solids as a colloid suspension in nematic liquid crystal : New tool for IR-spectroscopic and structural elucidation of inorganic compounds and glasses

T. Kolev, B. Koleva, B. Schivachev, 2008 .

Synthesis, spectroscopic, thermal and structural elucidation of 5-amino-2-methoxypyridine ester amide of squaric acid ethyl ester: A new material with an infinite pseudo-layered structure and manifested NLO application

William S. Sheldrick, Michael Spiteller, Tony Spassov, 2008 .

Linearly polarized IR-spectroscopy of partially oriented solids as a colloid suspension in nematic host: a tool for spectroscopic and structural elucidation of the embedded chemicals

V. Simeonov, Michael Spiteller, Tony Spassov, 2008 .

Are there preferable conformations of the tryptammonium cation in the solid state? Crystal structure and solid-state linear polarized IR-spectroscopic study of tryptammonium hydrogentartarate

M. Spiteller, T. Kolev, B. Koleva, 2008 .

Crystal structure and spectroscopic properties of ammonium hydrogensquarate squaric acid monohydrate

M. Spiteller, T. Kolev, B. Koleva, 2008 .

Sol-gel materials doped with 3-(3-(4-(dimethylamino)phenyl)propenoyl)-2H-chromen-2-one: spectroscopic and structural elucidation.

B. Koleva, I. Petkov, S. Gutzov, 2008, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

Spectroscopic and structural elucidation of L-tyrosine-containing dipeptides valyl-tyrosine and tyrosyl-alanine: solid-state IR-LD spectroscopy, quantum chemical calculations and vibrational analysis.

M. Spiteller, T. Kolev, B. Koleva, 2007, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

Structural and spectroscopic analysis of dipeptide l-methionyl-glycine and its hydrochloride

B. Koleva, T. Kolev, S. Todorov, 2007 .

Solid-state linear-polarized IR-spectroscopic characterization of l-methionine

B. Koleva, 2007 .

Linear-dichroic infrared spectral (IR-LD) analysis of codeine and its derivatives.

T. Kolev, B. Koleva, R. Bakalska, 2007, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

The dipeptide alanylphenylalanine (H-Ala-Phe-OH) – protonation and coordination ability with Au(III)

M. Spiteller, T. Kolev, B. Koleva, 2007 .

Tyrammonium 4-nitrophthalate dihydrate: structural and spectroscopic elucidation

M. Spiteller, T. Kolev, B. Koleva, 2007, Amino Acids.

Crystal structure and linear-dichroic infrared (IR-LD) spectral analysis of N,N′-diethyl-4-vinylbenzamidinium squarate

M. Spiteller, T. Kolev, B. Koleva, 2006 .

Spectral analysis and crystal structure of a new mononuclear copper(II) complex of 3-aminopyridine

B. Koleva, W. Sheldrick, H. Mayer-Figge, 2006 .

β-Cyclodextrin 10.41-hydrate

B. Koleva, R. W. Seidel, 2009, Acta crystallographica. Section E, Structure reports online.

Spectroscopic and structural elucidation of alanyl-containing dipeptides and their hydrogensquarates

M. Spiteller, T. Kolev, B. Koleva, 2008 .

Solid-state linear polarized IR-spectroscopy of croconic and rhodizonic acids

M. Spiteller, T. Kolev, B. Koleva, 2008 .

N,N-Diethyl-N'-[(E)-4-pyridylmethylene]benzene-1,4-diamine: a combined X-ray and density functional theory study.

T. Kolev, B. Koleva, R. W. Seidel, 2009, Acta crystallographica. Section C, Crystal structure communications.

Self-assembly of hydrogensquarates: crystal structures and properties.

M. Spiteller, T. Kolev, B. Koleva, 2009, The journal of physical chemistry. A.

Experimental and theoretical spectral properties of ethyl 2-(7-hydroxy-2-oxo-2H-chromen-4-yl)acetate doped sol-gel materials: new materials with potential optical application

B. Koleva, I. Petkov, S. Gutzov, 2007 .

Novel nonlinear optical materials based on dihydropyridine organic chromophore deposited on mica substrate

I. Kityk, J. Kasperczyk, W. Kuźnik, 2009 .

Tryptammonium (2S,3S)-hydrogentartrate monohydrate [Struct Chem (2008) 19:147–154]: redetermination at 110 K and re-refinement against room temperature data

M. Spiteller, T. Kolev, B. Koleva, 2009 .

On the origin of the color in the solid state. Crystal structure and optical and magnetic properties of 4-cyanopyridinium hydrogensquarate monohydrate.

M. Spiteller, T. Kolev, B. Koleva, 2008, The journal of physical chemistry. A.