4

Si      0.289750105561672      0.013615980846801      0.054874280763700
Si      1.271529445029410      1.563299266756192     -0.114451036041128
Si      1.460371850108179      0.090739062260476      1.594034601013571
Si      0.146005786803421      1.631329194118002      1.684640436118203