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Executive Committees of the IUCr

1. Provisional International Crystallographic Committee, 1946 - 1948

President

P.P. Ewald (UK)

General Secretary

R.C. Evans (UK)

Members

M.J. Buerger (USA)
D. Harker (USA)
J.A.A. Ketelaar (The Netherlands)
C. Mauguin (France)
A.V. Shubnikov (USSR)
W.H. Taylor (UK)

2. Executive Committee elected at First General Assembly, 1948, Harvard, USA

President

Sir Lawrence Bragg (UK)

Vice-Presidents

A. Westgren (Sweden)
R.W.G. Wyckoff (USA)

General Secretary

R.C. Evans (UK)

Editor Acta Cryst.

P.P. Ewald (UK)

Members

M.J. Buerger (USA)
A.L. Patterson (USA)
J. Wyart (France)

3. Executive Committee elected at Second General Assembly, 1951, Stockholm, Sweden

President

J.M. Bijvoet (The Netherlands)

Vice-Presidents

G. Hägg (Sweden)
J. Wyart (France)

General Secretary

R.C. Evans (UK)

Editor Acta Cryst.

P.P. Ewald (USA)

Members

J.D. Bernal (UK)
Sir K.S. Krishnan (India)
E. Onorato (Italy)
A.L. Patterson (USA)

4. Executive Committee elected at Third General Assembly, 1954, Paris, France

President

R.W.G. Wyckoff (USA)

Vice-Presidents

P.P. Ewald (USA)
G. Hägg (Sweden)

General Secretary

D.W. Smits (The Netherlands)

Members

J.D. Bernal (UK)
N.V. Belov (USSR)
A. Guinier (France)
A. Tovborg Jensen (Denmark)
C.H. MacGillavry (The Netherlands)
A.J.C. Wilson (UK)

5. Executive Committee elected at Fourth General Assembly, 1957, Montreal, Canada

President

J. Wyart (France)

Vice-Presidents

P.P. Ewald (USA)
N.V. Belov (USSR)

General Secretary

D.W. Smits (The Netherlands)

Retiring President

R.W.G. Wyckoff (USA)

Members

O.C.A. Bastiansen (Norway)
A. Guinier (France)
F.H. Laves (Switzerland)
C.H. MacGillavry (The Netherlands)
I. Nitta (Japan)
A.J.C. Wilson (UK)

6. Executive Committee elected at Fifth General Assembly, 1960, Cambridge, UK

President

P.P. Ewald (USA)

Vice-Presidents

N.V. Belov (USSR)
Dame Kathleen Lonsdale (UK)

General Secretary

D.W. Smits (The Netherlands)

Retiring President

J. Wyart (France)

Members

W.H. Barnes (Canada)
O.C.A. Bastiansen (Norway)
F.H. Laves (Switzerland)
I. Nitta (Japan)
B.E. Warren (USA)
G.S. Zhdanov (USSR)

7. Executive Committee elected at Sixth General Assembly, 1963, Rome, Italy

President

J.D. Bernal (UK)

Vice-Presidents

Dame Kathleen Lonsdale (UK)
I. Nitta (Japan)

General Secretary

D.W. Smits (The Netherlands)

Retiring President

P.P. Ewald (USA)

Members

W.H. Barnes (Canada)
J.M. Cowley (Australia)
H. Curien (France)
H. Jagodzinski (Germany, Fed Rep)
B.E. Warren (USA)
G.S. Zhdanov (USSR)

8. Executive Committee elected at Seventh General Assembly, 1966, Moscow, USSR

President

N.V. Belov (USSR)

Vice-Presidents

I. Nitta (Japan)
B.E. Warren (USA)

General Secretary

G. Boom (The Netherlands)

Treasurer

D.W.J. Cruickshank (UK)

Retiring President

Dame Kathleen Lonsdale (UK)

Just before the Seventh General Assembly in 1966, the then President, J.D. Bernal, resigned for reasons of health. In accordance with By-Law 2.3 (version after amendation by the Sixth General Assembly), Dame Kathleen Lonsdale assumed the office of President until the close of the Seventh General Assembly.

Members

J.M. Cowley (Australia)
H. Curien (France)
H. Jagodzinski (Germany, Fed Rep)
A. Línek (Czechoslovakia)
A.M. Liquori (Italy)
W.H. Zachariasen (USA)

9. Executive Committee elected at Eighth General Assembly, 1969, Stony Brook, USA

President

A. Guinier (France)

Vice-Presidents

F. Laves (Switzerland)
B.E. Warren (USA)

General Secretary and Treasurer

D.W.J. Cruickshank (UK)

G. Boom, who had been re-elected General Secretary at the Eighth General Assembly, resigned as from 3 April 1970. The Executive Committee recombined the offices of General Secretary and Treasurer and appointed D.W.J. Cruickshank, who had been re-elected Treasurer at the Eighth General Assembly, to this joint office as from 3 April 1970.

Immediate Past President

N.V. Belov (USSR)

Members

D. Hodgkin (UK)
N. Kato (Japan)
A. Línek (Czechoslovakia)
A. McL. Mathieson (Australia)
B.K. Vainshtein (USSR)
W.H. Zachariasen (USA)

10. Executive Committee elected at Ninth General Assembly, 1972, Kyoto, Japan

President

D. Hodgkin (UK)

Vice-President

H. Jagodzinski (Germany, Fed Rep)

General Secretary and Treasurer

S.E. Rasmussen (Denmark)

Immediate Past President

A. Guinier (France)

Members

N. Kato (Japan)
K. Lukaszewicz (Poland)
A. Magnéli (Sweden)
A. McL. Mathieson (Australia)
D.P. Shoemaker (USA)
B.K. Vainshtein (USSR)

11. Executive Committee elected at Tenth General Assembly, 1975, Amsterdam, The Netherlands

President

A. Magnéli (Sweden)

Vice-President

B.K. Vainshtein (USSR)

General Secretary and Treasurer

S.E. Rasmussen (Denmark)

Immediate Past President

D. Hodgkin (UK)

Members

F.R. Ahmed (Canada)
E.F. Bertaut (France)
K. Kuchitsu (Japan)
K. Lukaszewicz (Poland)
S. Ramaseshan (India)
D.P. Shoemaker (USA)

12. Executive Committee elected at Eleventh General Assembly, 1978, Warsaw, Poland

President

N. Kato (Japan)

Vice-President

A.J.C. Wilson (UK)

General Secretary and Treasurer

S.E. Rasmussen (Denmark)

Immediate Past President

A. Magnéli (Sweden)

Members

F.R. Ahmed (Canada)
E.F. Bertaut (France)
J. Karle (USA)
H. Neels (German Dem Rep)
S. Ramaseshan (India)
V.I. Simonov (USSR)

13. Executive Committee elected at Twelfth General Assembly, 1981, Ottawa, Canada

President

J. Karle (USA)

Vice-President

S. Ramaseshan (India)

General Secretary and Treasurer

K.V.J. Kurki-Suonio (Finland)

Immediate Past President

N. Kato (Japan)

Members

S. Amelinckx (Belgium)
Th. Hahn (Germany, Fed Rep)
M. Nardelli (Italy)
H. Neels (German Dem Rep)
V.I. Simonov (USSR)
M.M. Woolfson (UK)

14. Executive Committee elected at Thirteenth General Assembly, 1984, Hamburg, Federal Republic of Germany

President

Th. Hahn (Germany, Fed Rep)

Vice-President

V.I. Simonov (USSR)

General Secretary and Treasurer

K.V.J. Kurki-Suonio (Finland)

Immediate Past President

J. Karle (USA)

Members

A. Authier (France)
R. Diamond (UK)
A. Kálmán (Hungary)
E.N. Maslen (Australia)
M. Nardelli (Italy)
Y.-q. Tang (China, People's Rep)

15. Executive Committee elected at Fourteenth General Assembly, 1987, Perth, Australia

President

M. Nardelli (Italy)

Vice-President

Y.-q. Tang (China, People's Rep)

General Secretary and Treasurer

A.I. Hordvik (Norway)

Immediate Past President

Th. Hahn (Germany, Fed Rep)

Members

A. Authier (France)
P. Coppens (USA)
R. Diamond (UK)
A. Kálmán (Hungary)
E.N. Maslen (Australia)
V.I. Simonov (USSR)

S.A. Semiletov was elected to serve for the period 1987-1993. However, he died in mid 1989. The Executive Committee co-opted V.I. Simonov to fill the vacancy thus created until the next General Assembly, in 1990, when an election was held to fill the vacancy.

16. Executive Committee elected at Fifteenth General Assembly, 1990, Bordeaux, France

President

A. Authier (France)

Vice-President

A. Kálmán (Hungary)

General Secretary and Treasurer

A.I. Hordvik (Norway)

Immediate Past President

M. Nardelli (Italy)

Members

R. Chidambaram (India)
P.W. Codding (Canada)
P. Coppens (USA)
R.Diamond (UK)
J. Harada (Japan)
Yu.T. Struchkov (USSR/Russia)

17. Executive Committee elected at Sixteenth General Assembly, 1993, Beijing, People's Republic of China

President

P. Coppens (USA)

Vice-President

Yu. T. Struchkov (Russia)

Professor Yu. T. Struchkov died in 1995. The Executive Committee appointed Dr R. Chidambaram as Vice-President until the close of the next General Assembly .

General Secretary and Treasurer

A.I. Hordvik (Norway)

Professor A.I. Hordvik died in 1995. The Executive Committee appointed Professor S. Larsen as General Secretary and Treasurer until the close of the next General Assembly .

Immediate Past President

A. Authier (France)

Members

E.N. Baker (New Zealand)
R. Chidambaram (India)
P.W. Codding (Canada)
J. Harada (Japan)
M. Hart (UK)
H. Schenk (The Netherlands)

18. Executive Committee elected at Seventeenth General Assembly, 1996, Seattle, USA

President

E.N. Baker (New Zealand)

Vice-President

R. Chidambaram (India)

General Secretary and Treasurer

S. Larsen (Denmark)

Immediate Past President

P. Coppens (USA)

Members

L.A. Aslanov (Russia)
J.C.A. Boeyens (South Africa)
H. Fuess (Germany)
M. Hart (UK)
H. Schenk (The Netherlands)
M. Tanaka (Japan)

19. Executive Committee elected at Eighteenth General Assembly, 1999, Glasgow, UK

President

H. Schenk (The Netherlands)

Vice-President

M. Tanaka (Japan)

General Secretary and Treasurer

S. Larsen (Denmark)

Immediate Past President

E.N. Baker (New Zealand)

Members

L.A. Aslanov (Russia)
J.C.A. Boeyens (South Africa)
M.A. Carrondo (Portugal)
W.L. Duax (USA)
H. Fuess (Germany)
Z. Zhang (People's Republic of China)

20. Executive Committee elected at Nineteenth General Assembly, 2002, Geneva, Switzerland

President

W.L. Duax (USA)

Vice-President

L.A. Aslanov (Russia)

General Secretary and Treasurer

S. Larsen (Denmark)

Immediate Past President

H. Schenk (The Netherlands)

Members

M.A. Carrondo (Portugal)
G. Heger (Germany)
Y. Ohashi (Japan)
I. Torriani (Brazil)
D. Viterbo (Italy)
Z. Zhang (People's Republic of China)

21. Executive Committee elected at Twentieth General Assembly, 2005, Florence, Italy

President

Y. Ohashi (Japan)

Vice-President

I. Torriani (Brazil)

General Secretary and Treasurer

S. Lidin (Sweden)

Immediate Past President

W.L. Duax (USA)

Members

P.M. Colman (Australia)
G.R. Desiraju (India)
C.J. Gilmore (UK)
G. Heger (Germany)
C. Lecomte (France)
D. Viterbo (Italy)