iucr

commissions

principles
aperiodic crystals
biological macromolecules
quantum crystallography
crystal growth and characterization of materials
crystallographic computing
crystallographic nomenclature
crystallographic teaching
crystallography in art and cultural heritage
crystallography of materials
electron crystallography
high pressure
inorganic and mineral structures
international tables
journals
magnetic structures
mathematical and theoretical crystallography
neutron scattering
nmr crystallography
powder diffraction
small-angle scattering
structural chemistry
synchrotron and xfel radiation
xafs

congress

2020 iucr xxv
2017 iucr xxiv
2014 iucr xxiii
2011 iucr xxii
2008 iucr xxi
2005 iucr xx
2002 iucr xix
1999 iucr xviii
1996 iucr xvii
1993 iucr xvi
1990 iucr xv
1987 iucr xiv
1984 iucr xiii
1981 iucr xii
1978 iucr xi
1975 iucr x
1972 iucr ix
1969 iucr viii
1966 iucr vii
1963 iucr vi
1960 iucr v
1957 iucr iv
1954 iucr iii
1951 iucr ii
1948 iucr i

people

nobel prize

all
agre
anfinsen
barkla
boyer
w.h.bragg
w.l.bragg
brockhouse
de broglie
charpak
crick
curl
davisson
debye
deisenhofer
geim
de gennes
hauptman
hodgkin
huber
karle
karplus
kendrew
klug
kobilka
kornberg
kroto
laue
lefkowitz
levitt
lipscomb
mackinnon
michel
novoselov
pauling
perutz
ramakrishnan
roentgen
shechtman
shull
skou
smalley
steitz
sumner
thomson
walker
warshel
watson
wilkins
yonath

resources

commissions

aperiodic crystals
biological macromolecules
quantum crystallography
crystal growth and characterization of materials
crystallographic computing
crystallographic nomenclature
crystallographic teaching
crystallography in art and cultural heritage
crystallography of materials
electron crystallography
high pressure
inorganic and mineral structures
international tables
journals
magnetic structures
mathematical and theoretical crystallography
neutron scattering
NMR crystallography
powder diffraction
small-angle scattering
structural chemistry
synchrotron radiation
xafs

outreach

openlabs

calendar
OpenLab Costa Rica
IUCr-IUPAP-ICTP OpenLab Senegal
Bruker OpenLab Cameroon
Rigaku OpenLab Bolivia
Bruker OpenLab Albania
Bruker OpenLab Uruguay 2
Rigaku OpenLab Cambodia 2
Bruker OpenLab Vietnam 2
Bruker OpenLab Senegal
PANalytical OpenLab Mexico 2
CCDC OpenLab Kenya
Bruker OpenLab Tunisia
Bruker OpenLab Algeria
PANalytical OpenLab Turkey
Bruker OpenLab Vietnam
Agilent OpenLab Hong Kong
PANalytical OpenLab Mexico
Rigaku OpenLab Colombia
grenoble-darmstadt
Agilent OpenLab Turkey
Bruker OpenLab Indonesia
Bruker OpenLab Uruguay
Rigaku OpenLab Cambodia
PANalytical OpenLab Ghana
Bruker OpenLab Morocco
Agilent OpenLab Argentina
Bruker OpenLab Pakistan

John Stewart Rutherford passed away in September 2009 at the age of 70 years in the aftermath of a stroke from which he had suffered in May. Remembering John for his achievements in teaching and research falls short of characterizing the entirety of his contributions to the scientific community which is equally indebted to him for the energy and effort he spent in helping institutions of higher learning in emerging countries to uplift their teaching and research programs.

After graduation from Glasgow University in 1959 and an interlude at an ordnance establishment in Scotland John joined the group of the late Crispin Calvo at McMaster University in Hamilton, Ontario, where in 1967 he received his PhD with a thesis on the crystal structure of selenourea. John then went on to the Department of Crystallography at the University of Pittsburgh to study the structure of anti-cancer drugs. Back in Great Britain he investigated the crystal structure of phosphorous-nitrogen ring compounds at the University of Essex, after which he returned to McMaster for low-temperature diffraction studies. This was followed by a two years' engagement at the Northern Electric Company in Bramalea, Ontario, after which John joined the University of Regina, Saskatchewan, where he investigated the crystal structures of disulfonates. Back in his beloved Scotland John applied his teaching skills at a high school in Linwood until 1979. This year marks a break in John's career, because from now on we see him in Africa and the Arabian Peninsula until the end of his active engagement in 2003. The first station is the University of Swaziland (1980-1982), followed by the University of the Transkei (1983-1984), the Sultan Qabos University in Oman (1995-1996), and finally the National University of Science and Technology in Bulawayo, Zimbabwe (1998-2003), where he stayed until retirement. All these institutions are indebted to John for his assistance in their quest towards academic excellence. John created or revised curricula, taught chemistry courses, participated actively in the administration, acting as head of the Department of Chemistry and assuming other functions which are too numerous to be listed here.

After retirement in 2003 he moved back to his native Scotland, where the newly gained freedom from administrative duties enabled him to resume and further develop his reseach on theoretical crystallography, from 2005-2008 as member of the IUCr Commission on Mathematical and Theoretical Crystallography which he had joined since its foundation as an informal international work group in 2002. He continued his investigations on the application of number theory - one of the most fundamental areas of mathematics - to problems involving crystal lattices. The cover of *Acta Crystallographica* A**62** (2), a special issue on mathematical and theoretical crystallography, is taken from his article *Some algebraic properties of crystallographic sublattices*. In later years he became increasingly interested in the applications of graph theory to problems of crystal chemistry. Here John made substantial contributions to a monograph on *Graph Theory in Crystallography and Crystal Chemistry*. His passing prevented him from finishing this important task, which will nevertheless be brought to completion and will represent a most fitting homage to his memory.

John is survived by his wife Sasha and two daughters by a previous marriage.

Wilfrid E. Klee, Baden-Baden
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