Congratulations to Slávka and Juraj, following the successful defense of Slávka's RNDr. thesis.

Milestone for Slávka!

Slávka and Milagros with Slávka's RnDr. thesis.




Crystal Growth & Design 202323, 4357-4369.

Get the article from the journal -- it's Open Access! 

Download the Supplementary Cover

Slavomíra Šterbinská, Mariia Holub, Erik Čižmár, Juraj Černák, Lawrence Rocco Falvello, and Milagros Tomás.

An Old Crystallization Technique as a Fast, Facile, and Adaptable Method for Obtaining Single Crystals of Unstable “Li2TCNQF4” and New Compounds of TCNQ or TCNQF4: Syntheses, Crystal Structures, and Magnetic Properties


Water and 2,2,6,6-tetramethylpiperidine: an odd couple make a solid match.

Larry R. Falvello  IUCrJ, 9(3), 331-332, 2022.

OPEN ACCESS  Download from the journal 


A productive week with Slávka and Richard.

In the photo: Richard, Bea, Larry and Slávka

April 27, 2022


We were very happy to have a visit from Zeineb, seen here with Slávka and Larry.

Nov. 26, 2021



Anna received the highest qualification, 'Sobresaliente Cum Laude' for her thesis and defense. 

In the photo, Prof. Vladimir Zeleňák, President of the tribunal, announces the result of the exam. 

Anna's Double Doctorate is granted by  Pavol Jozef Šafárik University in Košice (director: Prof. Juraj Černák) and the University of Zaragoza (Larry Falvello). 

Click on the photos for full-size views. 


Zeineb passed her Ph.D. oral exam with the highest grade.


Zeineb's Double Doctorate is granted by the University of Zaragoza and the University of Tunis El Manar. 


On new solvatomorphs of the metalloligand [Ni(o-van-en)]

Author links open overlay panelAnna VráblováMilagros TomásJán TitišJuraj Černák, Larry R. Falvello 

EITHER get it from Inorg. Chim. Acta :

On new solvatomorphs of the metalloligand [Ni(o-van-en)] by Anna Vráblová, Milagros Tomás, Ján Titiš, Juraj Černák, Larry R. Falvello is licensed under CC BY-NC-ND 4.0CC iconby iconnc iconnd icon





OR get the POSTPRINT version from us:
Documento Adobe Acrobat [1.1 MB]


What is a crystal to the new chemical crystallographer, after that first, automated structure analysis?

Eprints from the publisher here: 

Cryst. Rev. (2020). 26(1), 1-24.   

Well, some good news is always welcome. We hear from Wiley that our paper "Crystalline Transformers: More within than Meets the Eye" was one of the top downloads for 2018-2019.

You can download from Acta Cryst B -- this paper has Open Access!  

Acta Cryst. (2018). B74, 403-404. 

DOI:  10.1107/S2052520618013203   

More information through #TopDownloadedArticle from Wiley.


Anna Vráblová, Juraj Černák, Larry R. Falvello and Milagros Tomás

Polymorphism of the dinuclear CoIII–Schiff base complex [Co2(o-van-en)3]·4CH3CN (o-van-en is a salen-type ligand)

Acta Cryst., Section C: Structural Chemistry, (2019) C75, 433-442.

DOI:  10.1107/S2053229619003115

Greg Powell, Pruitt Professor of Chemistry at Abilene Christian University, Abilene, Texas, visited in March, 2019. We had a great time working on crystal structures and discussing chemistry. 

Greg's group at Abilene is currently making large assemblies with metal-metal bonds.

Left to Right: Chunhua Tony Hu, Victor Young, Nancy Ross, Joel Bernstein, Elizabeth Hillard, Larry Falvello, Lana Hiscock, Milagros Tomás, Wayne Pearson and Juergen Eckert.

Photo curtesy of Alberto Albinati.


available here:

on Pages 51 - 52 there is a report on the session "Crystallography in Synergy with Computation, Sectroscopy and Synthesis," which was organized by Alberto Albinati and Larry Falvello and presented at the ACA annual meeting in July.

IN ADDITION to a very intersting talk by Milagros Tomás (3rd from the right), we had the pleasure of hosting an invited lecture by Joel Bernstein (4th from left), who gave a fascinating history of molecular crystal chemistry, interwoven with his own experiences as a leading researcher in this field.

Joel's recent passing is sadly lamented. He leaves behind contributions of inestimable importance to chemical crystallography. 


Anandi Srinivasan, Xiaoping Wang, Rodolphe Clérac, Mathieu Rouzières, Larry R. Falvello, John E. McGrady, Elizabeth A. Hillard

Temperature dependence of the spin state and geometry in tricobalt paddlewheel complexes with halide axial ligands

Dalton Transactions (2018) 47, 16798-16806

DOI: 10.1039/C8DT03833C


Larry R. Falvello

Crystalline Transformers: More within than Meets the Eye

Acta Cryst., Section B (2018) B74, 403-404

DOI:  10.1107/S2052520618013203 

Crystalline Transformers -- download an open reprint here.
Falvello Crystalline Transformers.pdf
Documento Adobe Acrobat [199.0 KB]

In Dalton Trans. 

Anna Vráblová, Juraj Černák, Cyril Rajnak, Ľubor Dlháň, Milagros Tomás, Larry R. Falvello, and Roman Boča

Exceptionally slow magnetic relaxation in cobalt(II) benzoate trihydrate

Dalton Trans., published on-line x/2018

DOI:  10.1039/C8DT03610A

See Zeineb's paper in J. Mol. Struct. (2019) 1176, 165-180.


29 November, 2018. And another good-bye after a research stay. Manel is finishing her three-month research internship. Here are Manel and Irene.

26 June, 2018. Oumaima is leaving after a productive three-month stay in Zaragoza.

{Ni-Ln} Series of Heterodinuclear Complexes Based on Schiff Base Ligand and Their Dehydration


Anna's oral presentation at "Progress in Inorganic Chemistry" (PANCH2018) in Levoča.

Transition-metal hydroxy clusters with a heretofore unobserved core geometry have been synthesized by combining platinum centers with two different oxidation states and their corresponding different coordination indices and geometries.

On-line in Chem. Comm. -- See two new organometallic compounds with brand-new transition-metal hydroxide core geometry. This unexpected result shows that there is still new chemistry to be discovered in this long-studied family of compounds. 


A Route to Small Clusters: A Twisted Half-Hexagram-Shaped M4(OH)4 Cluster and Its Capacity for Hosting Closed-Shell Metals

by I. Ara, M. A. García-Monforte, R.González, L. R. Falvello, and M. Tomás

Chem. Commun., 2017, 53, 13121-13124.

We had a visit in November from Professor Juraj Černák, who presented a seminar on cyanido chemistry.

Here are some of the photos from Juraj's talk and from a visit to the diffraction lab, where Anna gave us a tour.




As summer draws to a close and the new academic year begins, Alejandro (Spain), Zeineb (Tunisia) and Anna (Slovakia) gather to contemplate a classic diffractometer.

En los últimos días de verano y a los albores del nuevo año académico, Alejandro (España), Zeineb (Túnez) y Anna (Eslovaquia) se juntan, contemplando un difractómetro clásico.



Now online at Acta Cryst., Section C....

"A phase transition caught in mid-course:
independent and concomitant analyses of the
monoclinic and triclinic structures of

Full article (open access) here.


Acta Cryst. (2017). C73, 731-742




In Dalton Transactions....

"A symmetric, triply interlaced 3-D anionic MOF that exhibits both magnetic order and SMM behaviour"

Dalton Trans., 2016, 45, 16764-16768

This article is featured on the inside back cover of this special issue of Dalton Trans.  See the article.

Dalton Trans. web site.     




We are researchers in structural inorganic chemistry.


We work in an academic environment, at the University of Zaragoza and within the Department of Inorganic Chemistry, the Aragón Materials Science Institute (ICMA) and the Institute of Chemical Synthesis and Homogeneous Catalysis (ISQCH).


In the research grouping of the Autonomous Region of Aragón, we are members of the confederated group M4, Multifunctional Molecular Magnetic Materials .


    Larry Falvello  (PI)

    Milagros Tomás


See us on Facebook ( Lab Larry Falvello ) and at Facebook-Pages.







Somos investigadores en la química inorgánica estructural.


Trabajamos en el entorno académico, en la Universidad de Zaragoza, en el Instituto de Ciencia de Materiales de Aragón (ICMA) y en el Instituto de Síntesis Química y Catálisis Homogenea (ISQCH).


Somos miembros del Grupo Consolidado M4, Materiales Magnéticos Moleculares Multifuncionales .


Estamos interesados en MOLECULAS, CRISTALES, ARTE y mas...


Puedes ver el artículo de Milagros sobre el Arte Mudéjar y la Estructura Cristalina.



ELENA's AWARD - 2016 


16 March, 2016

CONGRATULATIONS!  The University of Zaragoza has awarded Elena its "Premio Extraordinario de Doctorado" (University Doctorate Award with Special Distinction) for her doctoral thesis Metal Citrate Cubanes: Synthesis, Characterization and Properties. Read all about Elena's work in the university press release (Spanish).

There is more about Elena's work at Aragón Investiga

Alejandro esta trabajando en el laboratorio.

Elena Forcén Vázquez


Elena received her Ph.D. in Zaragoza on 13 May, 2016. Elena's doctoral thesis received the "Premio Extraordinatio de Doctorado" from the University of Zaragoza.


Elena Forcén Vázquez Elena Forcén Vázquez
Anna Vráblová


15 January, 2016

Published in European Journal of Inorganic Chemistry: New preparation, first structure analysis and magnetism of the long-known nickel benzoate trihydrate: A linear Ni∙∙∙Ni∙∙∙Ni polymer and its parallels to the active site of urease, by Anna Vráblová, Larry R. Falvello, Javier Campo, Jozef Miklovič, Roman Boča, Juraj Černák and Milagros Tomás.

DOI: 10.1002/ejic.201501255


22 September, 2015

We welcome Professor Juraj Cernák of Pavol Jozef Safárik University in Kosice, who is here for an Erasmus visit. Under the auspices of our Erasmus program, two students from the University of Zaragoza are presently studying at UPJS.


5 June, 2015

The web site for SCTE2016 is now open. The 20th International Conference on Solid Compounds of Transition Elements will be held in Zaragoza in April, 2016. All the information is on the web site. 


18 May, 2015

A cover graphic based on an article in Chemistry -- A European Journal, about a compound described in  Elena's thesis, was used for the quiz question in the May 18, 2015, issue of Chemistry Views magazine. The quiz contest was held to mark the 20th anniversary of Chemistry -- A European Journal.


The article from Chemistry -- A European Journal is here.   It will be available under Open Access until the end of 2015.



Anna, Milagros, Seba

Photo: June 29, 2016. Anna has returned to Kosice to continue her co-tutored studies there, following a very productive three-month stay in Zaragoza.

DR. SEBASTIÁN A. SUÁREZ of the University of Buenos Aires and the CONICET is here as part of his post-doctoral work. Seba is analyzing displacement parameters and programming in Fortran.

WELCOME BACK! Anna Vráblová has arrived to begin a research-intensive stay in Zaragoza as part of her co-tutored Ph.D. Larry is her Co-Director in Zaragoza, and Professor Juraj Černák is Co-Director at Pavol Jozef Šafárik University in Košice. Anna was here in 2014 as a Master's student.